In the Linux kernel, the following vulnerability has been resolved: tcp: correct handling of extreme memory squeeze Testing with iperf3 using the "pasta" protocol splicer has revealed a problem in the way tcp handles window advertising in extreme memory squeeze situations. Under memory pressure, a socket endpoint may temporarily advertise a zero-sized window, but this is not stored as part of the socket data. The reasoning behind this is that it is considered a temporary setting which shouldn't influence any further calculations. However, if we happen to stall at an unfortunate value of the current window size, the algorithm selecting a new value will consistently fail to advertise a non-zero window once we have freed up enough memory. This means that this side's notion of the current window size is different from the one last advertised to the peer, causing the latter to not send any data to resolve the sitution. The problem occurs on the iperf3 server side, and the socket in question is a completely regular socket with the default settings for the fedora40 kernel. We do not use SO_PEEK or SO_RCVBUF on the socket. The following excerpt of a logging session, with own comments added, shows more in detail what is happening: // tcp_v4_rcv(->) // tcp_rcv_established(->) [5201<->39222]: ==== Activating log @ net/ipv4/tcp_input.c/tcp_data_queue()/5257 ==== [5201<->39222]: tcp_data_queue(->) [5201<->39222]: DROPPING skb [265600160..265665640], reason: SKB_DROP_REASON_PROTO_MEM [rcv_nxt 265600160, rcv_wnd 262144, snt_ack 265469200, win_now 131184] [copied_seq 259909392->260034360 (124968), unread 5565800, qlen 85, ofoq 0] [OFO queue: gap: 65480, len: 0] [5201<->39222]: tcp_data_queue(<-) [5201<->39222]: __tcp_transmit_skb(->) [tp->rcv_wup: 265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160] [5201<->39222]: tcp_select_window(->) [5201<->39222]: (inet_csk(sk)->icsk_ack.pending & ICSK_ACK_NOMEM) ? --> TRUE [tp->rcv_wup: 265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160] returning 0 [5201<->39222]: tcp_select_window(<-) [5201<->39222]: ADVERTISING WIN 0, ACK_SEQ: 265600160 [5201<->39222]: [__tcp_transmit_skb(<-) [5201<->39222]: tcp_rcv_established(<-) [5201<->39222]: tcp_v4_rcv(<-) // Receive queue is at 85 buffers and we are out of memory. // We drop the incoming buffer, although it is in sequence, and decide // to send an advertisement with a window of zero. // We don't update tp->rcv_wnd and tp->rcv_wup accordingly, which means // we unconditionally shrink the window. [5201<->39222]: tcp_recvmsg_locked(->) [5201<->39222]: __tcp_cleanup_rbuf(->) tp->rcv_wup: 265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160 [5201<->39222]: [new_win = 0, win_now = 131184, 2 * win_now = 262368] [5201<->39222]: [new_win >= (2 * win_now) ? --> time_to_ack = 0] [5201<->39222]: NOT calling tcp_send_ack() [tp->rcv_wup: 265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160] [5201<->39222]: __tcp_cleanup_rbuf(<-) [rcv_nxt 265600160, rcv_wnd 262144, snt_ack 265469200, win_now 131184] [copied_seq 260040464->260040464 (0), unread 5559696, qlen 85, ofoq 0] returning 6104 bytes [5201<->39222]: tcp_recvmsg_locked(<-) // After each read, the algorithm for calculating the new receive // window in __tcp_cleanup_rbuf() finds it is too small to advertise // or to update tp->rcv_wnd. // Meanwhile, the peer thinks the window is zero, and will not send // any more data to trigger an update from the interrupt mode side. [5201<->39222]: tcp_recvmsg_locked(->) [5201<->39222]: __tcp_cleanup_rbuf(->) tp->rcv_wup: 265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160 [5201<->39222]: [new_win = 262144, win_now = 131184, 2 * win_n ---truncated---

The remote Oracle Linux 10 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-20480 advisory.

    - sunrpc: handle SVC_GARBAGE during svc auth processing as auth error (Jeff Layton)  [Orabug: 38178286]     {CVE-2025-38089}
    - Add Zen34 clients (Borislav Petkov (AMD))  [Orabug: 38023239]  {CVE-2024-36350} {CVE-2024-36357}
    - x86/process: Move the buffer clearing before MONITOR (Kim Phillips)  [Orabug: 38023239]     {CVE-2024-36350} {CVE-2024-36357}
    - Add normal counters (Borislav Petkov (AMD))  [Orabug: 38023239]  {CVE-2024-36350} {CVE-2024-36357}
    - KVM: SVM: Advertize TSA CPUID bits to guests (Borislav Petkov (AMD))  [Orabug: 38023239]     {CVE-2024-36350} {CVE-2024-36357}
    - x86/bugs: Add a Transient Scheduler Attacks mitigation (Borislav Petkov (AMD))  [Orabug: 38023239]     {CVE-2024-36350} {CVE-2024-36357}
    - x86/bugs: Rename MDS machinery to something more generic (Borislav Petkov (AMD))  [Orabug: 38023239]     {CVE-2024-36350} {CVE-2024-36357}
    - block: fix adding folio to bio (Ming Lei) [Orabug: 37844657] {CVE-2025-22122}
    - f2fs: fix to avoid accessing uninitialized curseg (Chao Yu) [Orabug: 37844644] {CVE-2025-22123}
    - gpio: virtuser: fix potential out-of-bound write (Markus Burri) [Orabug: 38095181] {CVE-2025-38082}
    - net_sched: hfsc: Address reentrant enqueue adding class to eltree twice (Pedro Tammela) [Orabug:
    38049363] {CVE-2025-38001}
    - smb: client: Fix use-after-free in cifs_fill_dirent (Zhaolong Wang) [Orabug: 38094970] {CVE-2025-38051}
    - platform/x86: dell-wmi-sysman: Avoid buffer overflow in current_password_store() (Vladimir Moskovkin)     [Orabug: 38095141] {CVE-2025-38077}
    - ALSA: pcm: Fix race of buffer access at PCM OSS layer (Takashi Iwai) [Orabug: 38095145] {CVE-2025-38078}
    - can: bcm: add missing rcu read protection for procfs content (Oliver Hartkopp) [Orabug: 38049369]     {CVE-2025-38003}
    - can: bcm: add locking for bcm_op runtime updates (Oliver Hartkopp) [Orabug: 38049374] {CVE-2025-38004}
    - padata: do not leak refcount in reorder_work (Dominik Grzegorzek) [Orabug: 38094842] {CVE-2025-38031}
    - crypto: algif_hash - fix double free in hash_accept (Ivan Pravdin) [Orabug: 38095153] {CVE-2025-38079}
    - net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (Wang Liang) [Orabug: 38094978]     {CVE-2025-38052}
    - sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() (Cong Wang) [Orabug: 38049357]     {CVE-2025-38000}
    - idpf: fix null-ptr-deref in idpf_features_check (Pavan Kumar Linga) [Orabug: 38094982] {CVE-2025-38053}
    - ptp: ocp: Limit signal/freq counts in summary output functions (Sagi Maimon) [Orabug: 38094984]     {CVE-2025-38054}
    - perf/x86/intel: Fix segfault with PEBS-via-PT with sample_freq (Adrian Hunter) [Orabug: 38094988]     {CVE-2025-38055}
    - ASoC: SOF: Intel: hda: Fix UAF when reloading module (Tavian Barnes) [Orabug: 38094991] {CVE-2025-38056}
    - espintcp: fix skb leaks (Sabrina Dubroca) [Orabug: 38094993] {CVE-2025-38057}
    - __legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock (Al Viro) [Orabug: 38095000]     {CVE-2025-38058}
    - x86/Kconfig: make CFI_AUTO_DEFAULT depend on !RUST or Rust >= 1.88 (Pawel Anikiel) [Orabug: 38094847]     {CVE-2025-38033}
    - btrfs: avoid NULL pointer dereference if no valid csum tree (Qu Wenruo) [Orabug: 38095010]     {CVE-2025-38059}
    - btrfs: correct the order of prelim_ref arguments in btrfs__prelim_ref (Goldwyn Rodrigues) [Orabug:
    38094856] {CVE-2025-38034}
    - nvmet-tcp: don't restore null sk_state_change (Alistair Francis) [Orabug: 38094863] {CVE-2025-38035}
    - vxlan: Annotate FDB data races (Ido Schimmel) [Orabug: 38094879] {CVE-2025-38037}
    - cpufreq: amd-pstate: Remove unnecessary driver_lock in set_boost (Dhananjay Ugwekar) [Orabug: 38094888]     {CVE-2025-38038}
    - drm/amd/display: Increase block_sequence array size (Joshua Aberback) [Orabug: 38095164]     {CVE-2025-38080}
    - bpf: copy_verifier_state() should copy 'loop_entry' field (Eduard Zingerman) [Orabug: 38095018]     {CVE-2025-38060}
    - serial: mctrl_gpio: split disable_ms into sync and no_sync APIs (Alexis Lothore) [Orabug: 38094901]     {CVE-2025-38040}
    - net: pktgen: fix access outside of user given buffer in pktgen_thread_write() (Peter Seiderer) [Orabug:
    38095024] {CVE-2025-38061}
    - genirq/msi: Store the IOMMU IOVA directly in msi_desc instead of iommu_cookie (Jason Gunthorpe) [Orabug:
    38095031] {CVE-2025-38062}
    - dm: fix unconditional IO throttle caused by REQ_PREFLUSH (Jinliang Zheng) [Orabug: 38095038]     {CVE-2025-38063}
    - firmware: arm_ffa: Set dma_mask for ffa devices (Viresh Kumar) [Orabug: 38094925] {CVE-2025-38043}
    - media: cx231xx: set device_caps for 417 (Hans Verkuil) [Orabug: 38094934] {CVE-2025-38044}
    - orangefs: Do not truncate file size (Matthew Wilcox) [Orabug: 38095056] {CVE-2025-38065}
    - dm cache: prevent BUG_ON by blocking retries on failed device resumes (Ming-Hung Tsai) [Orabug:
    38095063] {CVE-2025-38066}
    - crypto: lzo - Fix compression buffer overrun (Herbert Xu) [Orabug: 38095079] {CVE-2025-38068}
    - PCI: endpoint: pci-epf-test: Fix double free that causes kernel to oops (Christian Bruel) [Orabug:
    38095087] {CVE-2025-38069}
    - wifi: iwlwifi: fix debug actions order (Johannes Berg) [Orabug: 38094942] {CVE-2025-38045}
    - x86/mm: Check return value from memblock_phys_alloc_range() (Philip Redkin) [Orabug: 38095101]     {CVE-2025-38071}
    - libnvdimm/labels: Fix divide error in nd_label_data_init() (Robert Richter) [Orabug: 38095109]     {CVE-2025-38072}
    - spi-rockchip: Fix register out of bounds access (Luis de Arquer) [Orabug: 38095173] {CVE-2025-38081}
    - x86/fred: Fix system hang during S4 resume with FRED enabled (Xin Li) [Orabug: 38094951]     {CVE-2025-38047}
    - block: fix race between set_blocksize and read paths (Darrick J. Wong) [Orabug: 38095117]     {CVE-2025-38073}
    - virtio_ring: Fix data race by tagging event_triggered as racy for KCSAN (Zhongqiu Han) [Orabug:
    38094958] {CVE-2025-38048}
    - scsi: target: iscsi: Fix timeout on deleted connection (Dmitry Bogdanov) [Orabug: 38095134]     {CVE-2025-38075}
    - usb: typec: ucsi: displayport: Fix deadlock (Andrei Kuchynski) [Orabug: 37977018] {CVE-2025-37967}
    - Bluetooth: btnxpuart: Fix kernel panic during FW release (Neeraj Sanjay Kale) [Orabug: 37844459]     {CVE-2025-22102}
    - iio: light: opt3001: fix deadlock due to concurrent flag access (Luca Ceresoli) [Orabug: 37977026]     {CVE-2025-37968}
    - mm/page_alloc: fix race condition in unaccepted memory handling (Kirill A. Shutemov) [Orabug: 38094767]     {CVE-2025-38008}
    - dmaengine: idxd: Refactor remove call with idxd_cleanup() helper (Shuai Xue) [Orabug: 38094790]     {CVE-2025-38014}
    - dmaengine: idxd: fix memory leak in error handling path of idxd_alloc (Shuai Xue) [Orabug: 38094793]     {CVE-2025-38015}
    - dmaengine: ti: k3-udma: Add missing locking (Ronald Wahl) [Orabug: 38094756] {CVE-2025-38005}
    - wifi: mt76: disable napi on driver removal (Fedor Pchelkin) [Orabug: 38094770] {CVE-2025-38009}
    - phy: tegra: xusb: Use a bitmask for UTMI pad power state tracking (Wayne Chang) [Orabug: 38094777]     {CVE-2025-38010}
    - drm/amdgpu: csa unmap use uninterruptible lock (Philip Yang) [Orabug: 38094779] {CVE-2025-38011}
    - HID: bpf: abort dispatch if device destroyed (Rongrong) [Orabug: 38094796] {CVE-2025-38016}
    - sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator (Tejun Heo) [Orabug: 38094786]     {CVE-2025-38012}
    - net/tls: fix kernel panic when alloc_page failed (Pengtao He) [Orabug: 38094802] {CVE-2025-38018}
    - mlxsw: spectrum_router: Fix use-after-free when deleting GRE net devices (Ido Schimmel) [Orabug:
    38094804] {CVE-2025-38019}
    - wifi: mac80211: Set n_channels after allocating struct cfg80211_scan_request (Kees Cook) [Orabug:
    38094788] {CVE-2025-38013}
    - regulator: max20086: fix invalid memory access (Cosmin Tanislav) [Orabug: 38094833] {CVE-2025-38027}
    - net/mlx5e: Disable MACsec offload for uplink representor profile (Carolina Jubran) [Orabug: 38094808]     {CVE-2025-38020}
    - net_sched: Flush gso_skb list too during ->change() (Cong Wang) [Orabug: 37998128] {CVE-2025-37992}
    - RDMA/core: Fix 'KASAN: slab-use-after-free Read in ib_register_device' problem (Zhu Yanjun) [Orabug:
    38094813] {CVE-2025-38022}
    - nfs: handle failure of nfs_get_lock_context in unlock path (Li Lingfeng) [Orabug: 38094818]     {CVE-2025-38023}
    - HID: uclogic: Add NULL check in uclogic_input_configured() (Henry Martin) [Orabug: 38094764]     {CVE-2025-38007}
    - RDMA/rxe: Fix slab-use-after-free Read in rxe_queue_cleanup bug (Zhu Yanjun) [Orabug: 38094827]     {CVE-2025-38024}
    - arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users (James Morse) [Orabug: 37977004]     {CVE-2025-37963}
    - arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs (James Morse) [Orabug: 37976926]     {CVE-2025-37948}
    - usb: typec: ucsi: displayport: Fix NULL pointer access (Andrei Kuchynski) [Orabug: 38015126]     {CVE-2025-37994}
    - module: ensure that kobject_put() is safe for module type kobjects (Dmitry Antipov) [Orabug: 38015131]     {CVE-2025-37995}
    - memblock: Accept allocated memory before use in memblock_double_array() (Tom Lendacky) [Orabug:
    37976994] {CVE-2025-37960}
    - xenbus: Use kref to track req lifetime (Jason Andryuk) [Orabug: 37976934] {CVE-2025-37949}
    - smb: client: Avoid race in open_cached_dir with lease breaks (Paul Aurich) [Orabug: 37976959]     {CVE-2025-37954}
    - drm/amd/display: Fix invalid context error in dml helper (Roman Li) [Orabug: 37977185] {CVE-2025-37965}
    - drm/v3d: Add job to pending list if the reset was skipped (Maira Canal) [Orabug: 37976942]     {CVE-2025-37951}
    - iio: imu: st_lsm6dsx: fix possible lockup in st_lsm6dsx_read_tagged_fifo (Silvano Seva) [Orabug:
    37977031] {CVE-2025-37969}
    - iio: imu: st_lsm6dsx: fix possible lockup in st_lsm6dsx_read_fifo (Silvano Seva) [Orabug: 37977037]     {CVE-2025-37970}
    - KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception (Mikhail Lobanov) [Orabug: 37976977]     {CVE-2025-37957}
    - mm/huge_memory: fix dereferencing invalid pmd migration entry (Gavin Guo) [Orabug: 37976982]     {CVE-2025-37958}
    - x86/mm: Eliminate window where TLB flushes may be inadvertently skipped (Dave Hansen) [Orabug: 37977013]     {CVE-2025-37964}
    - staging: bcm2835-camera: Initialise dev in v4l2_dev (Dave Stevenson) [Orabug: 37977042] {CVE-2025-37971}
    - Input: mtk-pmic-keys - fix possible null pointer dereference (Gary Bisson) [Orabug: 37977044]     {CVE-2025-37972}
    - bpf: Scrub packet on bpf_redirect_peer (Paul Chaignon) [Orabug: 37976990] {CVE-2025-37959}
    - netfilter: ipset: fix region locking in hash types (Jozsef Kadlecsik) [Orabug: 38015141]     {CVE-2025-37997}
    - ipvs: fix uninit-value for saddr in do_output_route4 (Julian Anastasov) [Orabug: 37976996]     {CVE-2025-37961}
    - can: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe (Antonios Salios) [Orabug:
    38015123] {CVE-2025-37993}
    - virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable() (Jakub Kicinski) [Orabug: 37976969]     {CVE-2025-37955}
    - sch_htb: make htb_deactivate() idempotent (Cong Wang) [Orabug: 37977176] {CVE-2025-37953}
    - ksmbd: fix memory leak in parse_lease_state() (Zhaolong Wang) [Orabug: 37977180] {CVE-2025-37962}
    - openvswitch: Fix unsafe attribute parsing in output_userspace() (Eelco Chaudron) [Orabug: 38015148]     {CVE-2025-37998}
    - ksmbd: Fix UAF in __close_file_table_ids (Sean Heelan) [Orabug: 37976951] {CVE-2025-37952}
    - ksmbd: prevent out-of-bounds stream writes by validating *pos (Norbert Szetei) [Orabug: 37976923]     {CVE-2025-37947}
    - ksmbd: prevent rename with empty string (Namjae Jeon) [Orabug: 37976972] {CVE-2025-37956}
    - s390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs (Niklas Schnelle) [Orabug:
    37976920] {CVE-2025-37946}
    - wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation (Veerendranath     Jakkam) [Orabug: 37977046] {CVE-2025-37973}
    - s390/pci: Fix missing check for zpci_create_device() error return (Niklas Schnelle) [Orabug: 37977050]     {CVE-2025-37974}
    - fs/erofs/fileio: call erofs_onlinefolio_split() after bio_add_folio() (Max Kellermann) [Orabug:
    38015155] {CVE-2025-37999}
    - mlxbf-bootctl: use sysfs_emit_at() in secure_boot_fuse_state_show() (David Thompson) [Orabug:
    37964051,38037120] {CVE-2025-37866}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7653-1 advisory.

    It was discovered that the CIFS network file system implementation in the Linux kernel did not properly     verify the target namespace when handling upcalls. An attacker could use this to expose sensitive     information. (CVE-2025-2312)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - PowerPC architecture;

    - S390 architecture;

    - Block layer subsystem;

    - Serial ATA and Parallel ATA drivers;

    - Drivers core;

    - Network block device driver;

    - Character device driver;

    - TPM device driver;

    - Clock framework and drivers;

    - FireWire subsystem;

    - GPIO subsystem;

    - GPU drivers;

    - HID subsystem;

    - I3C subsystem;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - Media drivers;

    - NVIDIA Tegra memory controller driver;

    - Fastrpc Driver;

    - Network drivers;

    - Mellanox network drivers;

    - Operating Performance Points (OPP) driver;

    - PCI subsystem;

    - x86 platform drivers;

    - i.MX PM domains;

    - PPS (Pulse Per Second) driver;

    - PTP clock framework;

    - Remote Processor subsystem;

    - Real Time Clock drivers;

    - SCSI subsystem;

    - QCOM SoC drivers;

    - Media staging drivers;

    - TTY drivers;

    - UFS subsystem;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - USB Serial drivers;

    - AFS file system;

    - File systems infrastructure;

    - BTRFS file system;

    - F2FS file system;

    - GFS2 file system;

    - NILFS2 file system;

    - File system notification infrastructure;

    - Overlay file system;

    - Proc file system;

    - SMB network file system;

    - UBI file system;

    - Timer subsystem;

    - KVM subsystem;

    - Networking core;

    - ptr_ring data structure definitions;

    - Networking subsytem;

    - Amateur Radio drivers;

    - XFRM subsystem;

    - Tracing infrastructure;

    - BPF subsystem;

    - Kernel CPU control infrastructure;

    - Padata parallel execution mechanism;

    - printk logging mechanism;

    - Memory management;

    - Bluetooth subsystem;

    - DCCP (Datagram Congestion Control Protocol);

    - IPv4 networking;

    - IPv6 networking;

    - MAC80211 subsystem;

    - IEEE 802.15.4 subsystem;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Open vSwitch;

    - Rose network layer;

    - RxRPC session sockets;

    - Network traffic control;

    - VMware vSockets driver;

    - Landlock security;

    - Linux Security Modules (LSM) Framework;

    - Tomoyo security module;

    - SoC audio core drivers; (CVE-2025-21830, CVE-2025-21678, CVE-2025-21815, CVE-2024-57974, CVE-2025-21725,     CVE-2025-21718, CVE-2025-21748, CVE-2025-21732, CVE-2024-57953, CVE-2025-21727, CVE-2025-21816,     CVE-2025-21719, CVE-2024-53124, CVE-2024-58019, CVE-2025-38001, CVE-2025-21720, CVE-2025-21734,     CVE-2025-21672, CVE-2025-21692, CVE-2024-58076, CVE-2025-21694, CVE-2024-58061, CVE-2025-21714,     CVE-2025-21689, CVE-2024-49887, CVE-2024-57949, CVE-2025-38177, CVE-2025-21683, CVE-2025-21669,     CVE-2025-21722, CVE-2024-57980, CVE-2025-38000, CVE-2025-37932, CVE-2024-58034, CVE-2024-58081,     CVE-2025-21733, CVE-2025-21682, CVE-2024-57924, CVE-2025-21743, CVE-2024-57975, CVE-2025-37798,     CVE-2024-58058, CVE-2025-21809, CVE-2025-21676, CVE-2024-57993, CVE-2025-21699, CVE-2024-58016,     CVE-2025-21832, CVE-2025-21804, CVE-2024-58011, CVE-2024-58007, CVE-2025-21826, CVE-2024-58055,     CVE-2025-21668, CVE-2025-21715, CVE-2024-58078, CVE-2025-21829, CVE-2025-21811, CVE-2025-21814,     CVE-2024-58053, CVE-2025-21726, CVE-2025-21943, CVE-2025-37750, CVE-2025-21673, CVE-2024-57984,     CVE-2025-37997, CVE-2025-21684, CVE-2025-21750, CVE-2024-58013, CVE-2025-21799, CVE-2024-58083,     CVE-2025-21798, CVE-2025-21731, CVE-2025-21708, CVE-2024-57986, CVE-2025-21744, CVE-2024-58014,     CVE-2025-21721, CVE-2024-58063, CVE-2024-57979, CVE-2024-58005, CVE-2025-21728, CVE-2025-21681,     CVE-2025-21806, CVE-2024-57982, CVE-2024-58002, CVE-2024-58082, CVE-2025-21812, CVE-2025-21745,     CVE-2024-58017, CVE-2025-21665, CVE-2025-21828, CVE-2025-37890, CVE-2024-57952, CVE-2024-57997,     CVE-2025-21825, CVE-2025-21716, CVE-2024-57948, CVE-2025-21710, CVE-2025-21674, CVE-2025-21675,     CVE-2024-50157, CVE-2025-21738, CVE-2025-22088, CVE-2024-58071, CVE-2024-58085, CVE-2025-21723,     CVE-2025-21690, CVE-2025-21670, CVE-2025-21741, CVE-2024-57999, CVE-2025-21691, CVE-2024-58068,     CVE-2024-58057, CVE-2024-57994, CVE-2024-58072, CVE-2025-21742, CVE-2024-58006, CVE-2024-58077,     CVE-2024-58003, CVE-2025-21753, CVE-2024-57981, CVE-2024-57973, CVE-2024-58001, CVE-2025-21666,     CVE-2025-21810, CVE-2025-21808, CVE-2024-57996, CVE-2024-58054, CVE-2024-57998, CVE-2025-21707,     CVE-2025-21736, CVE-2025-21820, CVE-2025-21739, CVE-2024-57951, CVE-2025-21667, CVE-2024-58070,     CVE-2025-21801, CVE-2024-58051, CVE-2024-58079, CVE-2025-21754, CVE-2024-58069, CVE-2025-37974,     CVE-2025-21802, CVE-2025-21749, CVE-2024-57990, CVE-2024-58080, CVE-2025-21705, CVE-2025-21697,     CVE-2024-58052, CVE-2025-21711, CVE-2024-58056, CVE-2025-21724, CVE-2024-58018, CVE-2025-21735,     CVE-2024-58010, CVE-2025-21680)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu Pro 24.04 LTS Realtime Kernel host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7652-1 advisory.

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - PowerPC architecture;

    - S390 architecture;

    - Block layer subsystem;

    - Serial ATA and Parallel ATA drivers;

    - Drivers core;

    - Network block device driver;

    - Character device driver;

    - TPM device driver;

    - Clock framework and drivers;

    - FireWire subsystem;

    - GPU drivers;

    - HID subsystem;

    - I3C subsystem;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - Media drivers;

    - NVIDIA Tegra memory controller driver;

    - Fastrpc Driver;

    - Network drivers;

    - Operating Performance Points (OPP) driver;

    - PCI subsystem;

    - x86 platform drivers;

    - PPS (Pulse Per Second) driver;

    - PTP clock framework;

    - Remote Processor subsystem;

    - Real Time Clock drivers;

    - SCSI subsystem;

    - QCOM SoC drivers;

    - Media staging drivers;

    - TTY drivers;

    - UFS subsystem;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - File systems infrastructure;

    - BTRFS file system;

    - F2FS file system;

    - NILFS2 file system;

    - SMB network file system;

    - UBI file system;

    - Timer subsystem;

    - KVM subsystem;

    - Networking core;

    - ptr_ring data structure definitions;

    - Networking subsytem;

    - Amateur Radio drivers;

    - XFRM subsystem;

    - Tracing infrastructure;

    - BPF subsystem;

    - Padata parallel execution mechanism;

    - printk logging mechanism;

    - Memory management;

    - Bluetooth subsystem;

    - IPv4 networking;

    - IPv6 networking;

    - MAC80211 subsystem;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Rose network layer;

    - RxRPC session sockets;

    - Network traffic control;

    - Landlock security;

    - Linux Security Modules (LSM) Framework;

    - Tomoyo security module;

    - SoC audio core drivers; (CVE-2024-58055, CVE-2024-58077, CVE-2024-58080, CVE-2024-58082, CVE-2025-21743,     CVE-2024-57953, CVE-2024-57994, CVE-2025-21806, CVE-2024-58007, CVE-2024-58002, CVE-2024-57974,     CVE-2024-57980, CVE-2025-21720, CVE-2024-57990, CVE-2025-21725, CVE-2024-58057, CVE-2024-58018,     CVE-2024-58011, CVE-2025-21814, CVE-2025-21799, CVE-2024-58017, CVE-2024-58014, CVE-2025-21731,     CVE-2024-58072, CVE-2024-58069, CVE-2024-58006, CVE-2024-57984, CVE-2025-21710, CVE-2024-58061,     CVE-2024-57997, CVE-2024-57975, CVE-2025-21724, CVE-2025-37974, CVE-2025-21808, CVE-2024-58056,     CVE-2025-21753, CVE-2024-58068, CVE-2025-21728, CVE-2025-21714, CVE-2024-58054, CVE-2025-21741,     CVE-2025-21736, CVE-2025-21715, CVE-2025-21802, CVE-2025-21739, CVE-2025-21727, CVE-2025-21749,     CVE-2024-58053, CVE-2024-58081, CVE-2025-21828, CVE-2025-21705, CVE-2024-58051, CVE-2024-57979,     CVE-2025-21754, CVE-2025-21734, CVE-2025-21829, CVE-2025-21735, CVE-2025-21826, CVE-2025-21738,     CVE-2024-58079, CVE-2025-21815, CVE-2025-21708, CVE-2024-57986, CVE-2024-58085, CVE-2025-21801,     CVE-2024-58071, CVE-2025-21810, CVE-2025-21726, CVE-2025-21744, CVE-2025-21830, CVE-2025-21748,     CVE-2024-58001, CVE-2024-58063, CVE-2024-57996, CVE-2025-21716, CVE-2024-58013, CVE-2024-58019,     CVE-2025-21811, CVE-2025-21711, CVE-2024-58076, CVE-2024-58070, CVE-2024-57982, CVE-2024-57998,     CVE-2025-21745, CVE-2025-21804, CVE-2024-57973, CVE-2024-58083, CVE-2025-21742, CVE-2025-37750,     CVE-2025-21733, CVE-2025-21750, CVE-2024-57981, CVE-2025-21718, CVE-2024-58058, CVE-2024-49887,     CVE-2024-58003, CVE-2024-57993, CVE-2024-57999, CVE-2024-58010, CVE-2025-21825, CVE-2025-21732,     CVE-2025-21719, CVE-2025-21721, CVE-2024-58034, CVE-2024-58005, CVE-2025-21707, CVE-2025-21809,     CVE-2024-58078, CVE-2025-21812, CVE-2024-58016, CVE-2025-21816, CVE-2024-58052, CVE-2025-21722,     CVE-2025-21832, CVE-2025-21723, CVE-2025-21820, CVE-2025-21798)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7651-1 advisory.

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - PowerPC architecture;

    - S390 architecture;

    - Block layer subsystem;

    - Serial ATA and Parallel ATA drivers;

    - Drivers core;

    - Network block device driver;

    - Character device driver;

    - TPM device driver;

    - Clock framework and drivers;

    - FireWire subsystem;

    - GPU drivers;

    - HID subsystem;

    - I3C subsystem;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - Media drivers;

    - NVIDIA Tegra memory controller driver;

    - Fastrpc Driver;

    - Network drivers;

    - Operating Performance Points (OPP) driver;

    - PCI subsystem;

    - x86 platform drivers;

    - PPS (Pulse Per Second) driver;

    - PTP clock framework;

    - Remote Processor subsystem;

    - Real Time Clock drivers;

    - SCSI subsystem;

    - QCOM SoC drivers;

    - Media staging drivers;

    - TTY drivers;

    - UFS subsystem;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - File systems infrastructure;

    - BTRFS file system;

    - F2FS file system;

    - NILFS2 file system;

    - SMB network file system;

    - UBI file system;

    - Timer subsystem;

    - KVM subsystem;

    - Networking core;

    - ptr_ring data structure definitions;

    - Networking subsytem;

    - Amateur Radio drivers;

    - XFRM subsystem;

    - Tracing infrastructure;

    - BPF subsystem;

    - Padata parallel execution mechanism;

    - printk logging mechanism;

    - Memory management;

    - Bluetooth subsystem;

    - IPv4 networking;

    - IPv6 networking;

    - MAC80211 subsystem;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Rose network layer;

    - RxRPC session sockets;

    - Network traffic control;

    - Landlock security;

    - Linux Security Modules (LSM) Framework;

    - Tomoyo security module;

    - SoC audio core drivers; (CVE-2024-57980, CVE-2024-58061, CVE-2025-21742, CVE-2025-21820, CVE-2024-57993,     CVE-2024-58071, CVE-2024-58017, CVE-2024-58019, CVE-2025-21745, CVE-2024-58016, CVE-2024-58011,     CVE-2024-58054, CVE-2025-21731, CVE-2024-58058, CVE-2024-58082, CVE-2025-21722, CVE-2024-58063,     CVE-2024-58014, CVE-2025-21735, CVE-2025-21828, CVE-2025-21804, CVE-2024-58018, CVE-2025-21814,     CVE-2024-58005, CVE-2024-58078, CVE-2025-21832, CVE-2025-21725, CVE-2025-21732, CVE-2025-21718,     CVE-2024-58069, CVE-2024-58052, CVE-2024-57973, CVE-2025-21825, CVE-2024-58056, CVE-2024-58080,     CVE-2025-21810, CVE-2024-57953, CVE-2025-37974, CVE-2024-57979, CVE-2025-21708, CVE-2024-57974,     CVE-2025-21753, CVE-2025-21736, CVE-2025-21728, CVE-2025-21743, CVE-2025-21815, CVE-2025-21802,     CVE-2025-21739, CVE-2024-57986, CVE-2024-57982, CVE-2025-21749, CVE-2025-21806, CVE-2025-21754,     CVE-2025-21738, CVE-2025-21716, CVE-2025-21705, CVE-2024-57998, CVE-2024-58006, CVE-2024-58068,     CVE-2025-21748, CVE-2024-58077, CVE-2025-21723, CVE-2024-58013, CVE-2025-21719, CVE-2024-58002,     CVE-2025-21750, CVE-2024-58053, CVE-2024-58070, CVE-2025-21809, CVE-2024-57975, CVE-2025-21816,     CVE-2025-21798, CVE-2024-58051, CVE-2024-58083, CVE-2025-21808, CVE-2025-21799, CVE-2024-57996,     CVE-2024-58085, CVE-2025-21744, CVE-2024-57994, CVE-2024-58055, CVE-2024-58076, CVE-2025-21710,     CVE-2025-21707, CVE-2024-58072, CVE-2025-21726, CVE-2025-21811, CVE-2025-37750, CVE-2024-58001,     CVE-2025-21714, CVE-2025-21711, CVE-2025-21830, CVE-2024-58007, CVE-2025-21812, CVE-2025-21734,     CVE-2024-58034, CVE-2024-58081, CVE-2024-58079, CVE-2024-58003, CVE-2025-21721, CVE-2024-49887,     CVE-2024-57984, CVE-2025-21715, CVE-2025-21801, CVE-2024-57997, CVE-2025-21741, CVE-2025-21727,     CVE-2024-58057, CVE-2025-21724, CVE-2024-57990, CVE-2024-57981, CVE-2024-57999, CVE-2025-21733,     CVE-2025-21829, CVE-2024-58010, CVE-2025-21720, CVE-2025-21826)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 24.04 LTS / 24.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7521-1 advisory.

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - ARM64 architecture;

    - PowerPC architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Serial ATA and Parallel ATA drivers;

    - Drivers core;

    - Network block device driver;

    - Bluetooth drivers;

    - Character device driver;

    - TPM device driver;

    - Clock framework and drivers;

    - Hardware crypto device drivers;

    - FireWire subsystem;

    - EFI core;

    - Qualcomm firmware drivers;

    - GPIO subsystem;

    - GPU drivers;

    - HID subsystem;

    - I2C subsystem;

    - I3C subsystem;

    - InfiniBand drivers;

    - Input Device (Mouse) drivers;

    - IOMMU subsystem;

    - Multiple devices driver;

    - Media drivers;

    - NVIDIA Tegra memory controller driver;

    - Fastrpc Driver;

    - Network drivers;

    - Operating Performance Points (OPP) driver;

    - PCI subsystem;

    - x86 platform drivers;

    - PPS (Pulse Per Second) driver;

    - PTP clock framework;

    - Remote Processor subsystem;

    - Real Time Clock drivers;

    - S/390 drivers;

    - SCSI subsystem;

    - QCOM SoC drivers;

    - SPI subsystem;

    - Media staging drivers;

    - Trusted Execution Environment drivers;

    - TTY drivers;

    - UFS subsystem;

    - USB Device Class drivers;

    - USB core drivers;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - Framebuffer layer;

    - File systems infrastructure;

    - BTRFS file system;

    - Ceph distributed file system;

    - Network file system (NFS) client;

    - Network file system (NFS) server daemon;

    - NILFS2 file system;

    - Overlay file system;

    - SMB network file system;

    - UBI file system;

    - BPF subsystem;

    - Timer subsystem;

    - KVM subsystem;

    - Networking core;

    - ptr_ring data structure definitions;

    - Networking subsytem;

    - Amateur Radio drivers;

    - L3 Master device support module;

    - TCP network protocol;

    - XFRM subsystem;

    - Tracing infrastructure;

    - io_uring subsystem;

    - Process Accounting mechanism;

    - Perf events;

    - Padata parallel execution mechanism;

    - printk logging mechanism;

    - Scheduler infrastructure;

    - Workqueue subsystem;

    - Memory management;

    - B.A.T.M.A.N. meshing protocol;

    - Bluetooth subsystem;

    - IPv4 networking;

    - IPv6 networking;

    - MAC80211 subsystem;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Open vSwitch;

    - Rose network layer;

    - RxRPC session sockets;

    - Network traffic control;

    - Wireless networking;

    - Key management;

    - Landlock security;

    - Linux Security Modules (LSM) Framework;

    - Tomoyo security module;

    - SoC audio core drivers;

    - SOF drivers; (CVE-2025-21737, CVE-2025-21711, CVE-2025-21987, CVE-2025-21848, CVE-2024-49570,     CVE-2025-21762, CVE-2025-21738, CVE-2025-21712, CVE-2025-21719, CVE-2025-21870, CVE-2024-57984,     CVE-2025-21815, CVE-2025-21744, CVE-2024-58058, CVE-2024-58078, CVE-2024-57990, CVE-2024-54458,     CVE-2025-21899, CVE-2025-21814, CVE-2025-21746, CVE-2024-54456, CVE-2025-21739, CVE-2024-58057,     CVE-2025-21855, CVE-2025-21758, CVE-2024-58006, CVE-2024-58007, CVE-2025-21720, CVE-2024-58090,     CVE-2025-21852, CVE-2024-57982, CVE-2024-58013, CVE-2024-58082, CVE-2025-21825, CVE-2024-58072,     CVE-2024-57996, CVE-2025-21787, CVE-2025-21742, CVE-2025-21705, CVE-2025-21829, CVE-2024-58060,     CVE-2025-21811, CVE-2025-21900, CVE-2025-21853, CVE-2025-21809, CVE-2025-21938, CVE-2025-21728,     CVE-2025-21785, CVE-2025-21732, CVE-2025-21888, CVE-2025-21768, CVE-2025-21875, CVE-2025-21721,     CVE-2025-21766, CVE-2025-21892, CVE-2024-57953, CVE-2025-21772, CVE-2025-21735, CVE-2024-58017,     CVE-2024-58086, CVE-2024-58084, CVE-2025-21761, CVE-2024-58008, CVE-2024-57988, CVE-2025-21874,     CVE-2024-58011, CVE-2025-21706, CVE-2024-57999, CVE-2025-21858, CVE-2024-58061, CVE-2025-21727,     CVE-2025-21780, CVE-2024-58051, CVE-2025-21791, CVE-2025-21788, CVE-2025-21786, CVE-2024-58012,     CVE-2024-58010, CVE-2024-58001, CVE-2025-21844, CVE-2025-21708, CVE-2024-57834, CVE-2025-21873,     CVE-2025-21704, CVE-2025-21765, CVE-2025-21839, CVE-2025-21723, CVE-2024-57974, CVE-2025-21876,     CVE-2025-21782, CVE-2025-21866, CVE-2024-58076, CVE-2025-21724, CVE-2025-21895, CVE-2025-21770,     CVE-2025-21835, CVE-2024-58052, CVE-2025-21827, CVE-2024-58069, CVE-2025-21828, CVE-2025-21734,     CVE-2025-21781, CVE-2025-21971, CVE-2025-21775, CVE-2024-52559, CVE-2024-58020, CVE-2025-21713,     CVE-2024-58068, CVE-2024-58018, CVE-2025-21806, CVE-2025-21802, CVE-2025-21731, CVE-2025-21741,     CVE-2025-21847, CVE-2025-21767, CVE-2024-58003, CVE-2024-57993, CVE-2025-21725, CVE-2025-21796,     CVE-2025-21764, CVE-2025-21862, CVE-2025-21733, CVE-2024-58075, CVE-2025-21808, CVE-2024-58034,     CVE-2025-21707, CVE-2024-58080, CVE-2025-21784, CVE-2024-57994, CVE-2025-21890, CVE-2025-21754,     CVE-2024-58063, CVE-2025-21826, CVE-2025-21821, CVE-2024-58079, CVE-2024-58056, CVE-2025-21798,     CVE-2024-58077, CVE-2024-58019, CVE-2025-21748, CVE-2025-21759, CVE-2024-58004, CVE-2024-58081,     CVE-2024-57978, CVE-2025-21865, CVE-2024-58002, CVE-2025-21810, CVE-2025-21743, CVE-2024-57989,     CVE-2025-21718, CVE-2024-57987, CVE-2025-21877, CVE-2024-57973, CVE-2024-58070, CVE-2024-58071,     CVE-2025-21891, CVE-2024-58021, CVE-2024-58016, CVE-2024-58005, CVE-2025-21760, CVE-2025-21883,     CVE-2025-21878, CVE-2025-21881, CVE-2025-21838, CVE-2025-21783, CVE-2024-57986, CVE-2025-21793,     CVE-2025-21859, CVE-2025-21792, CVE-2025-21820, CVE-2025-21799, CVE-2025-21750, CVE-2025-21795,     CVE-2025-21854, CVE-2025-21836, CVE-2025-21726, CVE-2025-21846, CVE-2025-21864, CVE-2024-57977,     CVE-2025-21887, CVE-2025-21710, CVE-2025-21889, CVE-2025-21812, CVE-2025-21773, CVE-2024-57852,     CVE-2025-21856, CVE-2025-21871, CVE-2025-21763, CVE-2024-58064, CVE-2025-21804, CVE-2024-58055,     CVE-2025-21898, CVE-2025-21776, CVE-2025-21869, CVE-2025-21745, CVE-2025-21736, CVE-2025-21716,     CVE-2024-57981, CVE-2024-57979, CVE-2025-21715, CVE-2024-57998, CVE-2025-21790, CVE-2024-58085,     CVE-2025-21749, CVE-2024-58088, CVE-2025-21753, CVE-2025-21851, CVE-2024-58054, CVE-2025-21830,     CVE-2025-21832, CVE-2024-57980, CVE-2025-21885, CVE-2025-21863, CVE-2024-58053, CVE-2025-21823,     CVE-2025-21857, CVE-2024-58083, CVE-2024-58014, CVE-2025-21816, CVE-2025-21779, CVE-2025-21872,     CVE-2024-57997, CVE-2025-21867, CVE-2024-57985, CVE-2025-21831, CVE-2025-21801, CVE-2025-21868,     CVE-2025-21849)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: tcp: correct handling of extreme     memory squeeze Testing with iperf3 using the pasta protocol splicer has revealed a problem in the way     tcp handles window advertising in extreme memory squeeze situations. Under memory pressure, a socket     endpoint may temporarily advertise a zero-sized window, but this is not stored as part of the socket data.
    The reasoning behind this is that it is considered a temporary setting which shouldn't influence any     further calculations. However, if we happen to stall at an unfortunate value of the current window size,     the algorithm selecting a new value will consistently fail to advertise a non-zero window once we have     freed up enough memory. This means that this side's notion of the current window size is different from     the one last advertised to the peer, causing the latter to not send any data to resolve the sitution. The     problem occurs on the iperf3 server side, and the socket in question is a completely regular socket with     the default settings for the fedora40 kernel. We do not use SO_PEEK or SO_RCVBUF on the socket. The     following excerpt of a logging session, with own comments added, shows more in detail what is happening:
    // tcp_v4_rcv(->) // tcp_rcv_established(->) [5201<->39222]: ==== Activating log @     net/ipv4/tcp_input.c/tcp_data_queue()/5257 ==== [5201<->39222]: tcp_data_queue(->) [5201<->39222]:
    DROPPING skb [265600160..265665640], reason: SKB_DROP_REASON_PROTO_MEM [rcv_nxt 265600160, rcv_wnd 262144,     snt_ack 265469200, win_now 131184] [copied_seq 259909392->260034360 (124968), unread 5565800, qlen 85,     ofoq 0] [OFO queue: gap: 65480, len: 0] [5201<->39222]: tcp_data_queue(<-) [5201<->39222]:
    __tcp_transmit_skb(->) [tp->rcv_wup: 265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160]     [5201<->39222]: tcp_select_window(->) [5201<->39222]: (inet_csk(sk)->icsk_ack.pending & ICSK_ACK_NOMEM) ?
    --> TRUE [tp->rcv_wup: 265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160] returning 0 [5201<->39222]:
    tcp_select_window(<-) [5201<->39222]: ADVERTISING WIN 0, ACK_SEQ: 265600160 [5201<->39222]:
    [__tcp_transmit_skb(<-) [5201<->39222]: tcp_rcv_established(<-) [5201<->39222]: tcp_v4_rcv(<-) // Receive     queue is at 85 buffers and we are out of memory. // We drop the incoming buffer, although it is in     sequence, and decide // to send an advertisement with a window of zero. // We don't update tp->rcv_wnd and     tp->rcv_wup accordingly, which means // we unconditionally shrink the window. [5201<->39222]:
    tcp_recvmsg_locked(->) [5201<->39222]: __tcp_cleanup_rbuf(->) tp->rcv_wup: 265469200, tp->rcv_wnd: 262144,     tp->rcv_nxt 265600160 [5201<->39222]: [new_win = 0, win_now = 131184, 2 * win_now = 262368]     [5201<->39222]: [new_win >= (2 * win_now) ? --> time_to_ack = 0] [5201<->39222]: NOT calling     tcp_send_ack() [tp->rcv_wup: 265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160] [5201<->39222]:
    __tcp_cleanup_rbuf(<-) [rcv_nxt 265600160, rcv_wnd 262144, snt_ack 265469200, win_now 131184] [copied_seq     260040464->260040464 (0), unread 5559696, qlen 85, ofoq 0] returning 6104 bytes [5201<->39222]:
    tcp_recvmsg_locked(<-) // After each read, the algorithm for calculating the new receive // window in
    __tcp_cleanup_rbuf() finds it is too small to advertise // or to update tp->rcv_wnd. // Meanwhile, the     peer thinks the window is zero, and will not send // any more data to trigger an update from the interrupt     mode side. [5201<->39222]: tcp_recvmsg_locked(->) [5201<->39222]: __tcp_cleanup_rbuf(->) tp->rcv_wup:
    265469200, tp->rcv_wnd: 262144, tp->rcv_nxt 265600160 [5201<->39222]: [new_win = 262144, win_now = 131184,     2 * win_n ---truncated--- (CVE-2025-21710)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
242347	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2025-20480)	Nessus	Oracle Linux Local Security Checks	medium
242344	Ubuntu 22.04 LTS : Linux kernel (HWE) vulnerabilities (USN-7653-1)	Nessus	Ubuntu Local Security Checks	high
242342	Ubuntu Pro 24.04 LTS Realtime Kernel : Linux kernel (Real-time) vulnerabilities (USN-7652-1)	Nessus	Ubuntu Local Security Checks	high
242282	Ubuntu 24.04 LTS : Linux kernel vulnerabilities (USN-7651-1)	Nessus	Ubuntu Local Security Checks	high
236983	Ubuntu 24.04 LTS / 24.10 : Linux kernel vulnerabilities (USN-7521-1)	Nessus	Ubuntu Local Security Checks	high
230839	Linux Distros Unpatched Vulnerability : CVE-2025-21710	Nessus	Misc.	medium

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