In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Check for any of tcp_bpf_prots when cloning a listener A listening socket linked to a sockmap has its sk_prot overridden. It points to one of the struct proto variants in tcp_bpf_prots. The variant depends on the socket's family and which sockmap programs are attached. A child socket cloned from a TCP listener initially inherits their sk_prot. But before cloning is finished, we restore the child's proto to the listener's original non-tcp_bpf_prots one. This happens in tcp_create_openreq_child -> tcp_bpf_clone. Today, in tcp_bpf_clone we detect if the child's proto should be restored by checking only for the TCP_BPF_BASE proto variant. This is not correct. The sk_prot of listening socket linked to a sockmap can point to to any variant in tcp_bpf_prots. If the listeners sk_prot happens to be not the TCP_BPF_BASE variant, then the child socket unintentionally is left if the inherited sk_prot by tcp_bpf_clone. This leads to issues like infinite recursion on close [1], because the child state is otherwise not set up for use with tcp_bpf_prot operations. Adjust the check in tcp_bpf_clone to detect all of tcp_bpf_prots variants. Note that it wouldn't be sufficient to check the socket state when overriding the sk_prot in tcp_bpf_update_proto in order to always use the TCP_BPF_BASE variant for listening sockets. Since commit b8b8315e39ff ("bpf, sockmap: Remove unhash handler for BPF sockmap usage") it is possible for a socket to transition to TCP_LISTEN state while already linked to a sockmap, e.g. connect() -> insert into map -> connect(AF_UNSPEC) -> listen(). [1]: https://lore.kernel.org/all/00000000000073b14905ef2e7401@google.com/

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:01620-1 advisory.

    The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security bugfixes.


    The following security bugs were fixed:

    - CVE-2022-48933: netfilter: nf_tables: fix memory leak during stateful obj update (bsc#1229621).
    - CVE-2022-49110: netfilter: conntrack: revisit gc autotuning (bsc#1237981).
    - CVE-2022-49139: Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt (bsc#1238032).
    - CVE-2022-49767: 9p/trans_fd: always use O_NONBLOCK read/write (bsc#1242493).
    - CVE-2024-46763: fou: Fix null-ptr-deref in GRO (bsc#1230764).
    - CVE-2024-50038: netfilter: xtables: avoid NFPROTO_UNSPEC where needed (bsc#1231910).
    - CVE-2025-21726: padata: avoid UAF for reorder_work (bsc#1238865).
    - CVE-2025-21785: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array (bsc#1238747).
    - CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1238512).
    - CVE-2025-21812: ax25: rcu protect dev->ax25_ptr (bsc#1238471).
    - CVE-2025-21839: KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop (bsc#1239061).
    - CVE-2025-22004: net: atm: fix use after free in lec_send() (bsc#1240835).
    - CVE-2025-22020: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (bsc#1241280).
    - CVE-2025-22045: x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs (bsc#1241433).
    - CVE-2025-22055: net: fix geneve_opt length integer overflow (bsc#1241371).
    - CVE-2025-22097: drm/vkms: Fix use after free and double free on init error (bsc#1241541).
    - CVE-2025-2312: CIFS: New mount option for cifs.upcall namespace resolution (bsc#1239684).
    - CVE-2025-23138: watch_queue: fix pipe accounting mismatch (bsc#1241648).
    - CVE-2025-39735: jfs: fix slab-out-of-bounds read in ea_get() (bsc#1241625).


Tenable has extracted the preceding description block directly from the SUSE 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 version of kernel installed on the remote host is prior to 5.15.93-55.139. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2024-037 advisory.

    A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing     sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw     to potentially crash the system causing a denial of service. (CVE-2022-4129)

    In the Linux kernel, the following vulnerability has been resolved:

    cpufreq: governor: Use kobject release() method to free dbs_data (CVE-2022-49513)

    In the Linux kernel, the following vulnerability has been resolved:

    ovl: Use buf flexible array for memcpy() destination (CVE-2022-49743)

    In the Linux kernel, the following vulnerability has been resolved:

    perf/x86/amd: fix potential integer overflow on shift of a int (CVE-2022-49748)

    In the Linux kernel, the following vulnerability has been resolved:

    device property: fix of node refcount leak in fwnode_graph_get_next_endpoint() (CVE-2022-49752)

    In the Linux kernel, the following vulnerability has been resolved:

    dmaengine: Fix double increment of client_count in dma_chan_get() (CVE-2022-49753)

    A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with     capabilities was found in the Linux kernel's OverlayFS subsystem in how a user copies a capable file from     a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges     on the system. (CVE-2023-0386)

    A memory corruption flaw was found in the Linux kernel's human interface device (HID) subsystem in how a     user inserts a malicious USB device. This flaw allows a local user to crash or potentially escalate their     privileges on the system. (CVE-2023-1073)

    A use-after-free flaw was found in nfsd4_ssc_setup_dul in fs/nfsd/nfs4proc.c in the NFS filesystem in the     Linux Kernel. This issue could allow a local attacker to crash the system or it may lead to a kernel     information leak problem. (CVE-2023-1652)

    In the Linux kernel 6.0.8, there is a use-after-free in inode_cgwb_move_to_attached in fs/fs-writeback.c,     related to __list_del_entry_valid. (CVE-2023-26605)

    A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing a font->width and     font->height greater than 32 to the fbcon_set_font, since there are no checks in place, a shift-out-of-     bounds occurs, leading to undefined behavior and possible denial of service. (CVE-2023-3161)

    A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux     Kernel. In this flaw an attacker with local user access may lead to a system crash or a leak of internal     kernel information. (CVE-2023-3567)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Skip invalid kfunc call in backtrack_insn (CVE-2023-52928)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/i915: Fix potential bit_17 double-free (CVE-2023-52930)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/swapfile: add cond_resched() in get_swap_pages() (CVE-2023-52932)

    In the Linux kernel, the following vulnerability has been resolved:

    Squashfs: fix handling and sanity checking of xattr_ids count (CVE-2023-52933)

    In the Linux kernel, the following vulnerability has been resolved:

    kernel/irq/irqdomain.c: fix memory leak with using debugfs_lookup() (CVE-2023-52936)

    In the Linux kernel, the following vulnerability has been resolved:

    vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF (CVE-2023-52973)

    In the Linux kernel, the following vulnerability has been resolved:

    efi: fix potential NULL deref in efi_mem_reserve_persistent (CVE-2023-52976)

    In the Linux kernel, the following vulnerability has been resolved:

    net: openvswitch: fix flow memory leak in ovs_flow_cmd_new (CVE-2023-52977)

    In the Linux kernel, the following vulnerability has been resolved:

    squashfs: harden sanity check in squashfs_read_xattr_id_table (CVE-2023-52979)

    In the Linux kernel, the following vulnerability has been resolved:

    block, bfq: fix uaf for bfqq in bic_set_bfqq() (CVE-2023-52983)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: Check for any of tcp_bpf_prots when cloning a listener (CVE-2023-52986)

    In the Linux kernel, the following vulnerability has been resolved:

    net: fix NULL pointer in skb_segment_list (CVE-2023-52991)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Skip task with pid=1 in send_signal_common() (CVE-2023-52992)

    In the Linux kernel, the following vulnerability has been resolved:

    x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL (CVE-2023-52993)

    In the Linux kernel, the following vulnerability has been resolved:

    ipv4: prevent potential spectre v1 gadget in fib_metrics_match() (CVE-2023-52996)

    In the Linux kernel, the following vulnerability has been resolved:

    ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() (CVE-2023-52997)

    In the Linux kernel, the following vulnerability has been resolved:

    net: fix UaF in netns ops registration error path (CVE-2023-52999)

    In the Linux kernel, the following vulnerability has been resolved:

    netlink: prevent potential spectre v1 gadgets (CVE-2023-53000)

    In the Linux kernel, the following vulnerability has been resolved:

    cifs: Fix oops due to uncleared server->smbd_conn in reconnect (CVE-2023-53006)

    In the Linux kernel, the following vulnerability has been resolved:

    tracing: Make sure trace_printk() can output as soon as it can be used (CVE-2023-53007)

    In the Linux kernel, the following vulnerability has been resolved:

    net: mdio: validate parameter addr in mdiobus_get_phy() (CVE-2023-53019)

    In the Linux kernel, the following vulnerability has been resolved:

    net/sched: sch_taprio: fix possible use-after-free (CVE-2023-53021)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation (CVE-2023-53024)

    In the Linux kernel, the following vulnerability has been resolved:

    NFSD: fix use-after-free in nfsd4_ssc_setup_dul() (CVE-2023-53025)

    In the Linux kernel, the following vulnerability has been resolved:

    RDMA/core: Fix ib block iterator counter overflow (CVE-2023-53026)

Tenable has extracted the preceding description block directly from the tested product 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 version of kernel installed on the remote host is prior to 5.10.173-154.642. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2023-028 advisory.

    A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks.
    L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after     running L2 due to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code execution can     execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or past     commit 2e7eab81425a (CVE-2022-2196)

    It has been discovered that on some AMD CPUs, the RAS (Return Address Stack, also called RAP - Return     Address Predictor - in some AMD documentation, and RSB - Return Stack Buffer - in Intel terminology) is     dynamically partitioned between non-idle threads.  This allows an attacker to control speculative     execution on the adjacent thread. (CVE-2022-27672)

    Detected a few exploitable gadgets that could leak secret memory through a side-channel such as MDS as     well as insufficient hardening of the usercopy functions against spectre-v1. (CVE-2023-0458)

    Due to a type confusion during initializations, the tun and tap sockets in the Linux Kernel have their     socket UID hardcoded to 0, i.e. root. While it will be often correct, as TUN/TAP devices require     CAP_NET_ADMIN, it may not always be the case. The socket UID may be used for network filtering and     routing, thus TUN/TAP sockets may be incorrectly managed, potentially bypassing network filters based on     UID. (CVE-2023-1076)

    kernel: Type confusion in pick_next_rt_entity(), which can result in memory corruption. (CVE-2023-1077)

    The upstream bug report describes this issue as follows:

    A flaw found in the Linux Kernel in RDS (Reliable Datagram Sockets) protocol. The     rds_rm_zerocopy_callback() uses list_entry() on the head of a list causing a type confusion. Local user     can trigger this with rds_message_put(). Type confusion leads to `struct rds_msg_zcopy_info *info`     actually points to something else that is potentially controlled by local user. It is known how to trigger     this, which causes an OOB access, and a lock corruption. (CVE-2023-1078)

    Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege     Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-     after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this     vulnerability to elevate its privileges to root.This issue affects Linux Kernel: from 4.14 before git     commit ee059170b1f7e94e55fa6cadee544e176a6e59c2. (CVE-2023-1281)

    A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited     to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate     filters in case of a perfect hashes while deleting the underlying structure which can later lead to double     freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to     root.We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28. (CVE-2023-1829)

    A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local     privilege escalation.

    The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free     vulnerability due a race condition with fixed files getting unregistered.

    We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8. (CVE-2023-1872)

    When plain IBRS is enabled (not enhanced IBRS), the logic in spectre_v2_user_select_mitigation()     determines that STIBP is not needed. The IBRS bit implicitly protects against cross-thread branch     targetinjection. However, with legacy IBRS, the IBRS bit is cleared on returning to userspace for     performance reasons which leaves userspace threads vulnerable to cross-thread branch target injection     against which STIBP protects. (CVE-2023-1998)

    A use-after-free flaw was found in iscsi_sw_tcp_session_create in drivers/scsi/iscsi_tcp.c in the SCSI     sub-component in the Linux Kernel. This issue could allow an attacker to leak kernel internal information.
    (CVE-2023-2162)

    In the Linux kernel before 6.0.3, drivers/gpu/drm/virtio/virtgpu_object.c misinterprets the     drm_gem_shmem_get_sg_table return value (expects it to be NULL in the error case, whereas it is actually     an error pointer). (CVE-2023-22998)

    In the Linux kernel before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure     (for registering the sysctl table under a new location) during the renaming of a device. (CVE-2023-26545)

    A use-after-free flaw was found in hfsplus_put_super in fs/hfsplus/super.c in the Linux Kernel. This flaw     could allow a local user to cause a denial of service. (CVE-2023-2985)

    A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing a font->width and     font->height greater than 32 to the fbcon_set_font, since there are no checks in place, a shift-out-of-     bounds occurs, leading to undefined behavior and possible denial of service. (CVE-2023-3161)

    A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux     Kernel. In this flaw an attacker with local user access may lead to a system crash or a leak of internal     kernel information. (CVE-2023-3567)

    An issue was discovered in drivers/usb/storage/ene_ub6250.c for the ENE UB6250 reader driver in the Linux     kernel before 6.2.5. An object could potentially extend beyond the end of an allocation. (CVE-2023-45862)

    In the Linux kernel, the following vulnerability has been resolved:

    aio: fix mremap after fork null-deref (CVE-2023-52646)

    In the Linux kernel, the following vulnerability has been resolved:

    net: openvswitch: fix possible memory leak in ovs_meter_cmd_set() (CVE-2023-52702)

    In the Linux kernel, the following vulnerability has been resolved:

    net/usb: kalmia: Don't pass act_len in usb_bulk_msg error path (CVE-2023-52703)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: fix underflow in second superblock position calculations (CVE-2023-52705)

    In the Linux kernel, the following vulnerability has been resolved:

    mmc: mmc_spi: fix error handling in mmc_spi_probe() (CVE-2023-52708)

    In the Linux kernel, the following vulnerability has been resolved:

    mmc: sdio: fix possible resource leaks in some error paths (CVE-2023-52730)

    In the Linux kernel, the following vulnerability has been resolved:

    Fix page corruption caused by racy check in __free_pages (CVE-2023-52739)

    In the Linux kernel, the following vulnerability has been resolved:

    cifs: Fix use-after-free in rdata->read_into_pages() (CVE-2023-52741)

    In the Linux kernel, the following vulnerability has been resolved:

    net: USB: Fix wrong-direction WARNING in plusb.c (CVE-2023-52742)

    In the Linux kernel, the following vulnerability has been resolved:

    IB/IPoIB: Fix legacy IPoIB due to wrong number of queues (CVE-2023-52745)

    In the Linux kernel, the following vulnerability has been resolved:

    xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr() (CVE-2023-52746)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/i915: Fix potential bit_17 double-free (CVE-2023-52930)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/swapfile: add cond_resched() in get_swap_pages() (CVE-2023-52932)

    In the Linux kernel, the following vulnerability has been resolved:

    Squashfs: fix handling and sanity checking of xattr_ids count (CVE-2023-52933)

    In the Linux kernel, the following vulnerability has been resolved:

    vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF (CVE-2023-52973)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress (CVE-2023-52974)

    In the Linux kernel, the following vulnerability has been resolved:

    efi: fix potential NULL deref in efi_mem_reserve_persistent (CVE-2023-52976)

    In the Linux kernel, the following vulnerability has been resolved:

    net: openvswitch: fix flow memory leak in ovs_flow_cmd_new (CVE-2023-52977)

    In the Linux kernel, the following vulnerability has been resolved:

    squashfs: harden sanity check in squashfs_read_xattr_id_table (CVE-2023-52979)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: Check for any of tcp_bpf_prots when cloning a listener (CVE-2023-52986)

    kernel: refcount leak in ctnetlink_create_conntrack() (CVE-2023-7192)

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

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

ID	Name	Product	Family	Severity
237098	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:01620-1)	Nessus	SuSE Local Security Checks	high
190056	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2024-037)	Nessus	Amazon Linux Local Security Checks	high
173228	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2023-028)	Nessus	Amazon Linux Local Security Checks	high

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