The version of kernel installed on the remote host is prior to 5.10.59-52.142. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-004 advisory.

    A flaw was found in the Linux kernel, where a BPF program can obtain sensitive information from kernel     memory via a Speculative Store Bypass side-channel attack. This issue occurs when the protection mechanism     neglects the possibility of uninitialized memory locations on the BPF stack. The highest threat from this     vulnerability is to confidentiality. (CVE-2021-34556)

    A flaw in the Linux kernel allows a privileged BPF program to obtain sensitive information from kernel     memory via a Speculative Store Bypass side-channel in the eBPF subsystem (CVE-2021-35477)

    A vulnerability was found in the Linux kernel. Missing size validations on inbound SCTP packets may allow     the kernel to read uninitialized memory. (CVE-2021-3655)

    A lack of CPU resources in the Linux kernel tracing module functionality was found in the way users use     the trace ring buffer in specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could     use this flaw to starve the resources causing denial of service. (CVE-2021-3679)

    A flaw use-after-free in the Linux kernel USB High Speed Mobile Devices functionality was found in the way     user detaches USB device. A local user could use this flaw to crash the system or escalate their     privileges on the system. (CVE-2021-37159)

    ** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss     can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE:
    the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the     length validation was added solely for robustness in the face of anomalous host OS behavior.
    (CVE-2021-38160)

    A flaw was found in the hanging of mounts in the Linux kernel's NFS4 subsystem where remote servers are     unreachable for the client during migration of data from one server to another (during trunking     detection). This flaw allows a remote NFS4 server (if the client is connected) to starve the resources,     causing a denial of service. The highest threat from this vulnerability is to system availability.
    (CVE-2021-38199)

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

    ACPI: fix NULL pointer dereference (CVE-2021-47289)

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

    ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions (CVE-2021-47291)

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

    net: sched: fix memory leak in tcindex_partial_destroy_work (CVE-2021-47295)

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

    bpf, sockmap: Fix potential memory leak on unlikely error case (CVE-2021-47298)

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

    xdp, net: Fix use-after-free in bpf_xdp_link_release (CVE-2021-47299)

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

    bpf: Fix tail_call_reachable rejection for interpreter when jit failed (CVE-2021-47300)

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

    igb: Fix use-after-free error during reset (CVE-2021-47301)

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

    bpf: Track subprog poke descriptors correctly and fix use-after-free (CVE-2021-47303)

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

    tcp: fix tcp_init_transfer() to not reset icsk_ca_initialized (CVE-2021-47304)

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

    dma-buf/sync_file: Don't leak fences on merge failure (CVE-2021-47305)

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

    cifs: prevent NULL deref in cifs_compose_mount_options() (CVE-2021-47307)

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

    scsi: libfc: Fix array index out of bound exception (CVE-2021-47308)

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

    net: validate lwtstate->data before returning from skb_tunnel_info() (CVE-2021-47309)

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

    net: qcom/emac: fix UAF in emac_remove (CVE-2021-47311)

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

    virtio-blk: Fix memory leak among suspend/resume procedure (CVE-2021-47319)

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

    nfs: fix acl memory leak of posix_acl_create() (CVE-2021-47320)

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

    NFSv4: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT (CVE-2021-47322)

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

    iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation (CVE-2021-47325)

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

    iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails (CVE-2021-47327)

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

    scsi: iscsi: Fix conn use after free during resets (CVE-2021-47328)

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

    scsi: megaraid_sas: Fix resource leak in case of probe failure (CVE-2021-47329)

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

    fbmem: Do not delete the mode that is still in use (CVE-2021-47338)

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

    jfs: fix GPF in diFree (CVE-2021-47340)

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

    KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio (CVE-2021-47341)

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

    dm btree remove: assign new_root only when removal succeeds (CVE-2021-47343)

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

    RDMA/cma: Fix rdma_resolve_route() memory leak (CVE-2021-47345)

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

    virtio-net: Add validation for used length (CVE-2021-47352)

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

    udf: Fix NULL pointer dereference in udf_symlink function (CVE-2021-47353)

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

    drm/sched: Avoid data corruptions (CVE-2021-47354)

    An issue was discovered in the Linux kernel before 5.13.3. lib/seq_buf.c has a seq_buf_putmem_hex buffer     overflow. (CVE-2023-28772)

    A flaw was found in the Linux Kernel's memory management subsytem. In this flaw, A task is exiting and     releasing 2MB page in a vma (vm_area_struct) and hits the BUG statement in pfn_swap_entry_to_page()     referencing pmd_t x. This may allow a local user to crash the Linux kernel. (CVE-2023-4732)

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 remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:5101 advisory.

    * kernel: powerpc: Fix access beyond end of drmem array (CVE-2023-52451)
    * kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)
    * kernel: tracing: Restructure trace_clock_global() to never block (CVE-2021-46939)
    * kernel: ext4: avoid online resizing failures due to oversized flex bg (CVE-2023-52622)
    * kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)
    * kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)
    * kernel: efi: runtime: Fix potential overflow of soft-reserved region size (CVE-2024-26843)
    * kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)
    * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)
    * kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)
    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by     untrusted application (CVE-2024-21823)
    * kernel: Revert net/mlx5: Block entering switchdev mode with ns inconsistency (CVE-2023-52658)
    * kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)
    * kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)
    * kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)
    * kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)
    * kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() (CVE-2024-35876)
    * kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)
    * kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)
    * (CVE-2023-28746)
    * (CVE-2023-52847)
    * (CVE-2021-47548)
    * (CVE-2024-36921)
    * (CVE-2024-26921)
    * (CVE-2021-47579)
    * (CVE-2024-36927)
    * (CVE-2024-39276)
    * (CVE-2024-33621)
    * (CVE-2024-27010)
    * (CVE-2024-26960)
    * (CVE-2024-38596)
    * (CVE-2022-48743)
    * (CVE-2024-26733)
    * (CVE-2024-26586)
    * (CVE-2024-26698)
    * (CVE-2023-52619)

    Bug Fix(es):

    * AlmaLinux8.6 - Spinlock statistics may show negative elapsed time and incorrectly formatted output     (JIRA:AlmaLinux-17678)
    * [AWS][8.9]There are call traces found when booting debug-kernel  for Amazon EC2 r8g.metal-24xl instance     (JIRA:AlmaLinux-23841)
    * [almalinux8] gfs2: Fix glock shrinker (JIRA:AlmaLinux-32941)
    * lan78xx: Microchip LAN7800 never comes up after unplug and replug (JIRA:AlmaLinux-33437)
    * [Hyper-V][AlmaLinux-8.10.z] Update hv_netvsc driver to TOT (JIRA:AlmaLinux-39074)
    * Use-after-free on proc inode-i_sb triggered by fsnotify (JIRA:AlmaLinux-40167)
    * blk-cgroup: Properly propagate the iostat update up the hierarchy [almalinux-8.10.z]     (JIRA:AlmaLinux-40939)
    * (JIRA:AlmaLinux-31798)
    * (JIRA:AlmaLinux-10263)
    * (JIRA:AlmaLinux-40901)
    * (JIRA:AlmaLinux-43547)
    * (JIRA:AlmaLinux-34876)

    Enhancement(s):

    * [RFE] Add module parameters 'soft_reboot_cmd' and 'soft_active_on_boot' for customizing softdog     configuration (JIRA:AlmaLinux-19723)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989302 advisory.

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

    tcp: fix tcp_init_transfer() to not reset icsk_ca_initialized

    This commit fixes a bug (found by syzkaller) that could cause spurious     double-initializations for congestion control modules, which could cause     memory leaks or other problems for congestion control modules (like CDG)     that allocate memory in their init functions.

    The buggy scenario constructed by syzkaller was something like:

    (1) create a TCP socket     (2) initiate a TFO connect via sendto()     (3) while socket is in TCP_SYN_SENT, call setsockopt(TCP_CONGESTION),         which calls:
           tcp_set_congestion_control() ->              tcp_reinit_congestion_control() ->                tcp_init_congestion_control()     (4) receive ACK, connection is established, call tcp_init_transfer(),         set icsk_ca_initialized=0 (without first calling cc->release()),         call tcp_init_congestion_control() again.

    Note that in this sequence tcp_init_congestion_control() is called     twice without a cc->release() call in between. Thus, for CC modules     that allocate memory in their init() function, e.g, CDG, a memory leak     may occur. The syzkaller tool managed to find a reproducer that     triggered such a leak in CDG.

    The bug was introduced when that commit 8919a9b31eb4 (tcp: Only init     congestion control if not initialized already)     introduced icsk_ca_initialized and set icsk_ca_initialized to 0 in     tcp_init_transfer(), missing the possibility for a sequence like the     one above, where a process could call setsockopt(TCP_CONGESTION) in     state TCP_SYN_SENT (i.e. after the connect() or TFO open sendmsg()),     which would call tcp_init_congestion_control(). It did not intend to     reset any initialization that the user had already explicitly made;
    it just missed the possibility of that particular sequence (which     syzkaller managed to find).

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

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

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:5101 advisory.

    * kernel: powerpc: Fix access beyond end of drmem array (CVE-2023-52451)

    * kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)

    * kernel: tracing: Restructure trace_clock_global() to never block (CVE-2021-46939)

    * kernel: ext4: avoid online resizing failures due to oversized flex bg (CVE-2023-52622)

    * kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)

    * kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)

    * kernel: efi: runtime: Fix potential overflow of soft-reserved region size (CVE-2024-26843)

    * kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)

    * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)

    * kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)

    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by     untrusted application (CVE-2024-21823)

    * kernel: Revert net/mlx5: Block entering switchdev mode with ns inconsistency (CVE-2023-52658)

    * kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)

    * kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)

    * kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)

    * kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)

    * kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() (CVE-2024-35876)

    * kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)

    * kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)

    * (CVE-2023-28746)
    * (CVE-2023-52847)
    * (CVE-2021-47548)
    * (CVE-2024-36921)
    * (CVE-2024-26921)
    * (CVE-2021-47579)
    * (CVE-2024-36927)
    * (CVE-2024-39276)
    * (CVE-2024-33621)
    * (CVE-2024-27010)
    * (CVE-2024-26960)
    * (CVE-2024-38596)
    * (CVE-2022-48743)
    * (CVE-2024-26733)
    * (CVE-2024-26586)
    * (CVE-2024-26698)
    * (CVE-2023-52619)

    Bug Fix(es):

    * Rocky Linux8.6 - Spinlock statistics may show negative elapsed time and incorrectly formatted output     (JIRA:Rocky Linux-17678)

    * [AWS][8.9]There are call traces found when booting debug-kernel  for Amazon EC2 r8g.metal-24xl instance     (JIRA:Rocky Linux-23841)

    * [rhel8] gfs2: Fix glock shrinker (JIRA:Rocky Linux-32941)

    * lan78xx: Microchip LAN7800 never comes up after unplug and replug (JIRA:Rocky Linux-33437)

    * [Hyper-V][Rocky Linux-8.10.z] Update hv_netvsc driver to TOT (JIRA:Rocky Linux-39074)

    * Use-after-free on proc inode-i_sb triggered by fsnotify (JIRA:Rocky Linux-40167)

    * blk-cgroup: Properly propagate the iostat update up the hierarchy [rhel-8.10.z] (JIRA:Rocky Linux-40939)

    * (JIRA:Rocky Linux-31798)
    * (JIRA:Rocky Linux-10263)
    * (JIRA:Rocky Linux-40901)
    * (JIRA:Rocky Linux-43547)
    * (JIRA:Rocky Linux-34876)

    Enhancement(s):

    * [RFE] Add module parameters 'soft_reboot_cmd' and 'soft_active_on_boot' for customizing softdog     configuration (JIRA:Rocky Linux-19723)

Tenable has extracted the preceding description block directly from the RockyLinux 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 MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-8704:25 advisory.

    kernel: powerpc: Fix access beyond end of drmem array (CVE-2023-52451)         kernel: efivarfs: force RO when remounting if SetVariable is not supported     (CVE-2023-52463)         kernel: tracing: Restructure trace_clock_global() to never block     (CVE-2021-46939)         kernel: ext4: avoid online resizing failures due to oversized flex bg     (CVE-2023-52622)         kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)         kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)         kernel: efi: runtime: Fix potential overflow of soft-reserved region size     (CVE-2024-26843)         kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)         kernel: TIPC message reassembly use-after-free remote code execution     vulnerability (CVE-2024-36886)         kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)         kernel: dmaengine/idxd: hardware erratum allows potential security problem     with direct access by untrusted application (CVE-2024-21823)         kernel: Revert net/mlx5: Block entering switchdev mode with ns     inconsistency (CVE-2023-52658)         kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)         kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)         kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)         kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)         kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank()     (CVE-2024-35876)         kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)         kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING     (CVE-2023-52845)         (CVE-2023-28746)         (CVE-2023-52847)         (CVE-2021-47548)         (CVE-2024-36921)         (CVE-2024-26921)         (CVE-2021-47579)         (CVE-2024-36927)         (CVE-2024-39276)         (CVE-2024-33621)         (CVE-2024-27010)         (CVE-2024-26960)         (CVE-2024-38596)         (CVE-2022-48743)         (CVE-2024-26733)         (CVE-2024-26586)         (CVE-2024-26698)         (CVE-2023-52619)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:5102 advisory.

    * kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)

    * kernel: tracing: Restructure trace_clock_global() to never block (CVE-2021-46939)

    * kernel: ext4: avoid online resizing failures due to oversized flex bg (CVE-2023-52622)

    * kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)

    * kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)

    * kernel: efi: runtime: Fix potential overflow of soft-reserved region size (CVE-2024-26843)

    * kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)

    * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)

    * kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)

    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by     untrusted application (CVE-2024-21823)

    * kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)

    * kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)

    * kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)

    * kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)

    * kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() (CVE-2024-35876)

    * kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)

    * kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)

    * kernel: Revert net/mlx5: Block entering switchdev mode with ns inconsistency (CVE-2023-52658)

    * kernel: crash due to a missing check for leb_size (CVE-2024-25739)

    * kernel: tcp: make sure init the accept_queue's spinlocks once (CVE-2024-26614)

    * kernel: tcp: add sanity checks to rx zerocopy (CVE-2024-26640)

    * kernel: NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102 (CVE-2024-26870)

    * kernel: nfs: fix UAF in direct writes (CVE-2024-26958)

    * kernel: SUNRPC: fix some memleaks in gssx_dec_option_array (CVE-2024-27388)

    * kernel: wifi: iwlwifi: mvm: don't set the MFP flag for the GTK (CVE-2024-27434)

    * kernel: of: Fix double free in of_parse_phandle_with_args_map (CVE-2023-52679)

    * kernel: scsi: lpfc: Fix possible memory leak in lpfc_rcv_padisc() (CVE-2024-35930)

    * kernel: wifi: iwlwifi: mvm: rfi: fix potential response leaks (CVE-2024-35912)

    * kernel: block: prevent division by zero in blk_rq_stat_sum() (CVE-2024-35925)

    * kernel: wifi: ath11k: decrease MHI channel buffer length to 8KB (CVE-2024-35938)

    * kernel: wifi: cfg80211: check A-MSDU format more carefully (CVE-2024-35937)

    * kernel: wifi: rtw89: fix null pointer access when abort scan (CVE-2024-35946)

    * kernel: netfilter: nf_tables: honor table dormant flag from netdev release event path (CVE-2024-36005)

    * kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge (CVE-2024-36000)

    * kernel: mlxsw: spectrum_acl_tcam: Fix incorrect list API usage (CVE-2024-36006)

    * kernel: net: ieee802154: fix null deref in parse dev addr (CVE-2021-47257)

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

    * kernel: wifi: ath11k: fix gtk offload status event locking (CVE-2023-52777)

    * (CVE-2023-52832)
    * (CVE-2023-52803)
    * (CVE-2023-52756)
    * (CVE-2023-52834)
    * (CVE-2023-52791)
    * (CVE-2023-52764)
    * (CVE-2021-47468)
    * (CVE-2021-47284)
    * (CVE-2024-36025)
    * (CVE-2024-36941)
    * (CVE-2024-36940)
    * (CVE-2024-36904)
    * (CVE-2024-36896)
    * (CVE-2024-36954)
    * (CVE-2024-36950)
    * (CVE-2024-38575)
    * (CVE-2024-36917)
    * (CVE-2024-36016)
    * (CVE-2023-52762)
    * (CVE-2024-27025)
    * (CVE-2021-47548)
    * (CVE-2023-52619)

Tenable has extracted the preceding description block directly from the RockyLinux 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: fix tcp_init_transfer() to not     reset icsk_ca_initialized This commit fixes a bug (found by syzkaller) that could cause spurious double-     initializations for congestion control modules, which could cause memory leaks or other problems for     congestion control modules (like CDG) that allocate memory in their init functions. The buggy scenario     constructed by syzkaller was something like: (1) create a TCP socket (2) initiate a TFO connect via     sendto() (3) while socket is in TCP_SYN_SENT, call setsockopt(TCP_CONGESTION), which calls:
    tcp_set_congestion_control() -> tcp_reinit_congestion_control() -> tcp_init_congestion_control() (4)     receive ACK, connection is established, call tcp_init_transfer(), set icsk_ca_initialized=0 (without first     calling cc->release()), call tcp_init_congestion_control() again. Note that in this sequence     tcp_init_congestion_control() is called twice without a cc->release() call in between. Thus, for CC     modules that allocate memory in their init() function, e.g, CDG, a memory leak may occur. The syzkaller     tool managed to find a reproducer that triggered such a leak in CDG. The bug was introduced when that     commit 8919a9b31eb4 (tcp: Only init congestion control if not initialized already) introduced     icsk_ca_initialized and set icsk_ca_initialized to 0 in tcp_init_transfer(), missing the possibility for a     sequence like the one above, where a process could call setsockopt(TCP_CONGESTION) in state TCP_SYN_SENT     (i.e. after the connect() or TFO open sendmsg()), which would call tcp_init_congestion_control(). It did     not intend to reset any initialization that the user had already explicitly made; it just missed the     possibility of that particular sequence (which syzkaller managed to find). (CVE-2021-47304)

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-987220 advisory.

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

    tcp: fix tcp_init_transfer() to not reset icsk_ca_initialized

    This commit fixes a bug (found by syzkaller) that could cause spurious     double-initializations for congestion control modules, which could cause     memory leaks or other problems for congestion control modules (like CDG)     that allocate memory in their init functions.

    The buggy scenario constructed by syzkaller was something like:

    (1) create a TCP socket     (2) initiate a TFO connect via sendto()     (3) while socket is in TCP_SYN_SENT, call setsockopt(TCP_CONGESTION),         which calls:
           tcp_set_congestion_control() ->              tcp_reinit_congestion_control() ->                tcp_init_congestion_control()     (4) receive ACK, connection is established, call tcp_init_transfer(),         set icsk_ca_initialized=0 (without first calling cc->release()),         call tcp_init_congestion_control() again.

    Note that in this sequence tcp_init_congestion_control() is called     twice without a cc->release() call in between. Thus, for CC modules     that allocate memory in their init() function, e.g, CDG, a memory leak     may occur. The syzkaller tool managed to find a reproducer that     triggered such a leak in CDG.

    The bug was introduced when that commit 8919a9b31eb4 (tcp: Only init     congestion control if not initialized already)     introduced icsk_ca_initialized and set icsk_ca_initialized to 0 in     tcp_init_transfer(), missing the possibility for a sequence like the     one above, where a process could call setsockopt(TCP_CONGESTION) in     state TCP_SYN_SENT (i.e. after the connect() or TFO open sendmsg()),     which would call tcp_init_congestion_control(). It did not intend to     reset any initialization that the user had already explicitly made;
    it just missed the possibility of that particular sequence (which     syzkaller managed to find).

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

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

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:5102 advisory.

    * kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)
    * kernel: tracing: Restructure trace_clock_global() to never block (CVE-2021-46939)
    * kernel: ext4: avoid online resizing failures due to oversized flex bg (CVE-2023-52622)
    * kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)
    * kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)
    * kernel: efi: runtime: Fix potential overflow of soft-reserved region size (CVE-2024-26843)
    * kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)
    * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)
    * kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)
    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by     untrusted application (CVE-2024-21823)
    * kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)
    * kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)
    * kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)
    * kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)
    * kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() (CVE-2024-35876)
    * kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)
    * kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)
    * kernel: Revert net/mlx5: Block entering switchdev mode with ns inconsistency (CVE-2023-52658)
    * kernel: crash due to a missing check for leb_size (CVE-2024-25739)
    * kernel: tcp: make sure init the accept_queue's spinlocks once (CVE-2024-26614)
    * kernel: tcp: add sanity checks to rx zerocopy (CVE-2024-26640)
    * kernel: NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102 (CVE-2024-26870)
    * kernel: nfs: fix UAF in direct writes (CVE-2024-26958)
    * kernel: SUNRPC: fix some memleaks in gssx_dec_option_array (CVE-2024-27388)
    * kernel: wifi: iwlwifi: mvm: don't set the MFP flag for the GTK (CVE-2024-27434)
    * kernel: of: Fix double free in of_parse_phandle_with_args_map (CVE-2023-52679)
    * kernel: scsi: lpfc: Fix possible memory leak in lpfc_rcv_padisc() (CVE-2024-35930)
    * kernel: wifi: iwlwifi: mvm: rfi: fix potential response leaks (CVE-2024-35912)
    * kernel: block: prevent division by zero in blk_rq_stat_sum() (CVE-2024-35925)
    * kernel: wifi: ath11k: decrease MHI channel buffer length to 8KB (CVE-2024-35938)
    * kernel: wifi: cfg80211: check A-MSDU format more carefully (CVE-2024-35937)
    * kernel: wifi: rtw89: fix null pointer access when abort scan (CVE-2024-35946)
    * kernel: netfilter: nf_tables: honor table dormant flag from netdev release event path (CVE-2024-36005)
    * kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge (CVE-2024-36000)
    * kernel: mlxsw: spectrum_acl_tcam: Fix incorrect list API usage (CVE-2024-36006)
    * kernel: net: ieee802154: fix null deref in parse dev addr (CVE-2021-47257)
    * kernel: mmc: sdio: fix possible resource leaks in some error paths (CVE-2023-52730)
    * kernel: wifi: ath11k: fix gtk offload status event locking (CVE-2023-52777)
    * (CVE-2023-52832)
    * (CVE-2023-52803)
    * (CVE-2023-52756)
    * (CVE-2023-52834)
    * (CVE-2023-52791)
    * (CVE-2023-52764)
    * (CVE-2021-47468)
    * (CVE-2021-47284)
    * (CVE-2024-36025)
    * (CVE-2024-36941)
    * (CVE-2024-36940)
    * (CVE-2024-36904)
    * (CVE-2024-36896)
    * (CVE-2024-36954)
    * (CVE-2024-36950)
    * (CVE-2024-38575)
    * (CVE-2024-36917)
    * (CVE-2024-36016)
    * (CVE-2023-52762)
    * (CVE-2024-27025)
    * (CVE-2021-47548)
    * (CVE-2023-52619)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:5101 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: powerpc: Fix access beyond end of drmem array (CVE-2023-52451)

    * kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)

    * kernel: tracing: Restructure trace_clock_global() to never block (CVE-2021-46939)

    * kernel: ext4: avoid online resizing failures due to oversized flex bg (CVE-2023-52622)

    * kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)

    * kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)

    * kernel: efi: runtime: Fix potential overflow of soft-reserved region size (CVE-2024-26843)

    * kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)

    * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)

    * kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)

    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by     untrusted application (CVE-2024-21823)

    * kernel: Revert net/mlx5: Block entering switchdev mode with ns inconsistency (CVE-2023-52658)

    * kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)

    * kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)

    * kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)

    * kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)

    * kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() (CVE-2024-35876)

    * kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)

    * kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)

    * (CVE-2023-28746)
    * (CVE-2023-52847)
    * (CVE-2021-47548)
    * (CVE-2024-36921)
    * (CVE-2024-26921)
    * (CVE-2021-47579)
    * (CVE-2024-36927)
    * (CVE-2024-39276)
    * (CVE-2024-33621)
    * (CVE-2024-27010)
    * (CVE-2024-26960)
    * (CVE-2024-38596)
    * (CVE-2022-48743)
    * (CVE-2024-26733)
    * (CVE-2024-26586)
    * (CVE-2024-26698)
    * (CVE-2023-52619)

    Bug Fix(es):

    * RHEL8.6 - Spinlock statistics may show negative elapsed time and incorrectly formatted output     (JIRA:RHEL-17678)

    * [AWS][8.9]There are call traces found when booting debug-kernel  for Amazon EC2 r8g.metal-24xl instance     (JIRA:RHEL-23841)

    * [rhel8] gfs2: Fix glock shrinker (JIRA:RHEL-32941)

    * lan78xx: Microchip LAN7800 never comes up after unplug and replug (JIRA:RHEL-33437)

    * [Hyper-V][RHEL-8.10.z] Update hv_netvsc driver to TOT (JIRA:RHEL-39074)

    * Use-after-free on proc inode-i_sb triggered by fsnotify (JIRA:RHEL-40167)

    * blk-cgroup: Properly propagate the iostat update up the hierarchy [rhel-8.10.z] (JIRA:RHEL-40939)

    * (JIRA:RHEL-31798)
    * (JIRA:RHEL-10263)
    * (JIRA:RHEL-40901)
    * (JIRA:RHEL-43547)
    * (JIRA:RHEL-34876)

    Enhancement(s):

    * [RFE] Add module parameters 'soft_reboot_cmd' and 'soft_active_on_boot' for customizing softdog     configuration (JIRA:RHEL-19723)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:5102 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)

    * kernel: tracing: Restructure trace_clock_global() to never block (CVE-2021-46939)

    * kernel: ext4: avoid online resizing failures due to oversized flex bg (CVE-2023-52622)

    * kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)

    * kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)

    * kernel: efi: runtime: Fix potential overflow of soft-reserved region size (CVE-2024-26843)

    * kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)

    * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)

    * kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)

    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by     untrusted application (CVE-2024-21823)

    * kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)

    * kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)

    * kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)

    * kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)

    * kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() (CVE-2024-35876)

    * kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)

    * kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)

    * kernel: Revert net/mlx5: Block entering switchdev mode with ns inconsistency (CVE-2023-52658)

    * kernel: crash due to a missing check for leb_size (CVE-2024-25739)

    * kernel: tcp: make sure init the accept_queue's spinlocks once (CVE-2024-26614)

    * kernel: tcp: add sanity checks to rx zerocopy (CVE-2024-26640)

    * kernel: NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102 (CVE-2024-26870)

    * kernel: nfs: fix UAF in direct writes (CVE-2024-26958)

    * kernel: SUNRPC: fix some memleaks in gssx_dec_option_array (CVE-2024-27388)

    * kernel: wifi: iwlwifi: mvm: don't set the MFP flag for the GTK (CVE-2024-27434)

    * kernel: of: Fix double free in of_parse_phandle_with_args_map (CVE-2023-52679)

    * kernel: scsi: lpfc: Fix possible memory leak in lpfc_rcv_padisc() (CVE-2024-35930)

    * kernel: wifi: iwlwifi: mvm: rfi: fix potential response leaks (CVE-2024-35912)

    * kernel: block: prevent division by zero in blk_rq_stat_sum() (CVE-2024-35925)

    * kernel: wifi: ath11k: decrease MHI channel buffer length to 8KB (CVE-2024-35938)

    * kernel: wifi: cfg80211: check A-MSDU format more carefully (CVE-2024-35937)

    * kernel: wifi: rtw89: fix null pointer access when abort scan (CVE-2024-35946)

    * kernel: netfilter: nf_tables: honor table dormant flag from netdev release event path (CVE-2024-36005)

    * kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge (CVE-2024-36000)

    * kernel: mlxsw: spectrum_acl_tcam: Fix incorrect list API usage (CVE-2024-36006)

    * kernel: net: ieee802154: fix null deref in parse dev addr (CVE-2021-47257)

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

    * kernel: wifi: ath11k: fix gtk offload status event locking (CVE-2023-52777)

    * (CVE-2023-52832)
    * (CVE-2023-52803)
    * (CVE-2023-52756)
    * (CVE-2023-52834)
    * (CVE-2023-52791)
    * (CVE-2023-52764)
    * (CVE-2021-47468)
    * (CVE-2021-47284)
    * (CVE-2024-36025)
    * (CVE-2024-36941)
    * (CVE-2024-36940)
    * (CVE-2024-36904)
    * (CVE-2024-36896)
    * (CVE-2024-36954)
    * (CVE-2024-36950)
    * (CVE-2024-38575)
    * (CVE-2024-36917)
    * (CVE-2024-36016)
    * (CVE-2023-52762)
    * (CVE-2024-27025)
    * (CVE-2021-47548)
    * (CVE-2023-52619)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

ID	Name	Product	Family	Published	Updated	Severity
160434	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2022-004)	Nessus	Amazon Linux Local Security Checks	5/2/2022	2/26/2026	high
205293	AlmaLinux 8 : kernel (ALSA-2024:5101)	Nessus	Alma Linux Local Security Checks	8/9/2024	9/23/2025	high
273422	Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989302)	Nessus	Unity Linux Local Security Checks	11/5/2025	11/5/2025	medium
205332	Oracle Linux 8 : kernel (ELSA-2024-5101)	Nessus	Oracle Linux Local Security Checks	8/9/2024	2/9/2026	high
206056	RockyLinux 8 : kernel (RLSA-2024:5101)	Nessus	Rocky Linux Local Security Checks	8/21/2024	9/24/2025	high
292998	MiracleLinux 8 : kernel-4.18.0-553.16.1.el8_10 (AXSA:2024-8704:25)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
206053	RockyLinux 8 : kernel-rt (RLSA-2024:5102)	Nessus	Rocky Linux Local Security Checks	8/21/2024	9/24/2025	high
249757	Linux Distros Unpatched Vulnerability : CVE-2021-47304	Nessus	Misc.	8/15/2025	8/15/2025	medium
268629	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987220)	Nessus	Unity Linux Local Security Checks	10/7/2025	10/15/2025	medium
205294	AlmaLinux 8 : kernel-rt (ALSA-2024:5102)	Nessus	Alma Linux Local Security Checks	8/9/2024	9/23/2025	high
205214	RHEL 8 : kernel (RHSA-2024:5101)	Nessus	Red Hat Local Security Checks	8/8/2024	9/24/2025	high
205212	RHEL 8 : kernel-rt (RHSA-2024:5102)	Nessus	Red Hat Local Security Checks	8/8/2024	9/24/2025	high

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