In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation Computing the effects of a TLB invalidation involves looking at the size of the mapping cached by the TLB. For S1 mappings such as VNCR, this is deducted from the combination of the base granule size and the mapping level. However, this implies that the S1 MMU is *on*. When the MMU is off, we indicate this with the level being set to a "creative" value of -127 (S1_MMU_DISABLED). This ends-up being misinterpreted by pgshift_level_to_ttl() as it doesn't handle negative levels at all (the level is immediately cast to a u8 and only the bottom two bits considered), leading to an invalidation size of 0. Not helpful. Tidy-up pgshift_level_to_ttl() to handle these negative levels, and ttl_to_size() to always return SZ_1G when no valid TTL is present. This allows the removal of open-coded checks for similar situations. Note that the check for a negative value not explicitely checking for S1_MMU_DISABLED is deliberate, so that actual negative levels introduced with LVA2 and D128 can take the same path if we ever support them.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Handle negative S1 walk
    levels in VNCR TLB size evaluation Computing the effects of a TLB invalidation involves looking at the
    size of the mapping cached by the TLB. For S1 mappings such as VNCR, this is deducted from the combination
    of the base granule size and the mapping level. However, this implies that the S1 MMU is *on*. When the
    MMU is off, we indicate this with the level being set to a "creative" value of -127 (S1_MMU_DISABLED).
    This ends-up being misinterpreted by pgshift_level_to_ttl() as it doesn't handle negative levels at all
    (the level is immediately cast to a u8 and only the bottom two bits considered), leading to an
    invalidation size of 0. Not helpful. Tidy-up pgshift_level_to_ttl() to handle these negative levels, and
    ttl_to_size() to always return SZ_1G when no valid TTL is present. This allows the removal of open-coded
    checks for similar situations. Note that the check for a negative value not explicitely checking for
    S1_MMU_DISABLED is deliberate, so that actual negative levels introduced with LVA2 and D128 can take the
    same path if we ever support them. (CVE-2026-89775)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-72624 advisory.

    - perf: Reject exited events as group leaders (Anubhav Shelat) [RHEL-258812] {CVE-2026-74753}
    - perf/core: Detach event groups during remove_on_exec (Anubhav Shelat) [RHEL-250496] {CVE-2026-64556}
    - KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation (Gavin Shan) [RHEL-261954]     {CVE-2026-89775}
    - KVM: arm64: Reassign nested_mmus array behind mmu_lock (Gavin Shan) [RHEL-227043] {CVE-2026-46317}
    - nvme-tcp: reject a read that transferred too few bytes (CKI Backport Bot) [RHEL-263335] {CVE-2026-89480}
    - fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() (Abhi Das) [RHEL-231396]     {CVE-2026-53341}
    - crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() (CKI Backport Bot)     [RHEL-254306] {CVE-2026-80522}
    - vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CKI Backport Bot) [RHEL-252817]     {CVE-2026-68299}
    - KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 (CKI Backport Bot) [RHEL-227378]     {CVE-2026-46076}
    - ext4: fix e4b bitmap inconsistency reports (CKI Backport Bot) [RHEL-225949] {CVE-2026-45942}
    - pppoe: reload header pointer after dev_hard_header() (Guillaume Nault) [RHEL-242509] {CVE-2026-68121}
    - nvme-tcp: fix host memory disclosure on R2T for a read command (CKI Backport Bot) [RHEL-263403]     {CVE-2026-89481}
    - af_unix: Drop all SCM attributes for SOCKMAP. (Davide Caratti) [RHEL-229262] {CVE-2026-53005}
    - ipvs: do not propagate one-packet flag to synced conns (CKI Backport Bot) [RHEL-255860] {CVE-2026-80714}
    - drm/amdgpu/vce: fix integer overflow in image size (Mika Penttila) [RHEL-257136] {CVE-2026-68108}
    - drm/amdkfd: fix 32-bit overflow in CWSR total size calculation (Mika Penttila) [RHEL-237844]     {CVE-2026-68257}
    - drm/xe: Hold a dma-buf reference for imported BOs (CKI Backport Bot) [RHEL-236300] {CVE-2026-68266}
    - drm/virtio: use uninterruptible resv lock for plane updates (CKI Backport Bot) [RHEL-229327]     {CVE-2026-64098}
    - drm/amdgpu/userq: fix access to stale wptr mapping (Mika Penttila) [RHEL-225409] {CVE-2026-46311}
    - drm/amdgpu: do not use amdgpu_bo_gpu_offset_no_check individually (Mika Penttila) [RHEL-225409]     {CVE-2026-46311}
    - drm/amdgpu: Fix context pstate override handling (CKI Backport Bot) [RHEL-236714] {CVE-2026-68273}
    - drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists (CKI Backport Bot) [RHEL-237962]     {CVE-2026-68267}
    - drm/xe/rtp: Refactor OAG MMIO trigger register whitelisting (CKI Backport Bot) [RHEL-237962]     {CVE-2026-68267}
    - drm/xe/xe3: Apply wa_14024997852 (CKI Backport Bot) [RHEL-237962] {CVE-2026-68267}
    - drm/xe/eustall: Fix drm_dev_put called before stream disable in close (CKI Backport Bot) [RHEL-229371]     {CVE-2026-53290}
    - drm/amdgpu/vcn3: Avoid overflow on msg bound check (Mika Penttila) [RHEL-225316] {CVE-2026-46230}
    - drm/amdgpu/vcn3: Prevent OOB reads when parsing dec msg (Mika Penttila) [RHEL-225316] {CVE-2026-46230}
    - drm/amdgpu/vcn4: Prevent OOB reads when parsing IB (CKI Backport Bot) [RHEL-226047] {CVE-2026-46204}
    - fbcon: Set fb_display[i]->mode to NULL when the mode is released (Mika Penttila) [RHEL-250108]     {CVE-2025-40323}
    - drm/amdgpu/vcn4: Avoid overflow on msg bound check (Mika Penttila) [RHEL-225444] {CVE-2026-46199}
    - drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg (Mika Penttila) [RHEL-225444] {CVE-2026-46199}
    - accel/ivpu: Add buffer overflow check in MS get_info_ioctl (CKI Backport Bot) [RHEL-230647]     {CVE-2026-53203}
    - libceph: fix potential use-after-free in have_mon_and_osd_map() (CKI Backport Bot) [RHEL-169081]     {CVE-2025-68285}
    - libceph: reset sparse-read state in osd_fault() (CKI Backport Bot) [RHEL-169079] {CVE-2026-23136}
    - libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CKI Backport Bot) [RHEL-169072]     {CVE-2026-22990}
    - libceph: prevent potential out-of-bounds reads in handle_auth_done() (CKI Backport Bot) [RHEL-169068]     {CVE-2026-22984}
    - libceph: make decode_pool() more resilient against corrupted osdmaps (CKI Backport Bot) [RHEL-169064]     {CVE-2025-71116}
    - net: tun: bound receive headroom (CKI Backport Bot) [RHEL-264371] {CVE-2026-81000}
    - xfrm: ah6: validate routing header segments_left (CKI Backport Bot) [RHEL-264303] {CVE-2026-80844}
    - scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read (CKI Backport Bot) [RHEL-262556]     {CVE-2026-89846}
    - netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp() (CKI Backport Bot)     [RHEL-260585] {CVE-2026-74569}
    - selinux: check connect-related permissions on TCP Fast Open (CKI Backport Bot) [RHEL-258024]     {CVE-2026-72243}
    - smb: client: fix double-free in SMB2_flush() replay (CKI Backport Bot) [RHEL-253205] {CVE-2026-64383}
    - RHEL: revert 'block: only zero non-PI metadata tuples in bio_integrity_prep' (Jeff Moyer) [RHEL-189638]     {CVE-2026-23007}
    - block: don't overwrite bip_vcnt in bio_integrity_copy_user() (Jeff Moyer) [RHEL-232375] {CVE-2026-64053}
    - blk-cgroup: fix UAF in __blkcg_rstat_flush() (Jeff Moyer) [RHEL-230292] {CVE-2026-63802}
    - ALSA: timer: drain a slave's callback before its master detaches it (CKI Backport Bot) [RHEL-236084]     {CVE-2026-68201}
    - sctp: don't free the ASCONF's own transport in DEL-IP processing (CKI Backport Bot) [RHEL-234288]     {CVE-2026-64564}
    - mac802154: llsec: add skb_cow_data() before in-place crypto (CKI Backport Bot) [RHEL-231034]     {CVE-2026-63831}
    - netfilter: bridge: make ebt_snat ARP rewrite writable (CKI Backport Bot) [RHEL-190036] {CVE-2026-53266}
    - crypto: af_alg - Fix incorrect boolean values in af_alg_ctx (CKI Backport Bot) [RHEL-264234]     {CVE-2025-39964}
    - crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg (CKI Backport Bot) [RHEL-264234]     {CVE-2025-39964}
    - nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path (CKI Backport Bot)     [RHEL-260452] {CVE-2026-64534}
    - mm/hugetlb: fix list corruption in allocate_file_region_entries() (Rafael Aquini) [RHEL-254491]     {CVE-2026-74518}
    - libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE (CKI Backport Bot) [RHEL-237164]     {CVE-2026-68159}
    - libceph: Amend checking to fix make W=1 build breakage (CKI Backport Bot) [RHEL-237164] {CVE-2026-68159}
    - Bluetooth: RFCOMM: Fix session UAF in set_termios (CKI Backport Bot) [RHEL-241107] {CVE-2026-68188}
    - libceph: Reject monmaps advertising zero monitors (CKI Backport Bot) [RHEL-240892] {CVE-2026-68155}
    - iommu/vt-d: Fix race condition during PASID entry replacement (Eder Zulian) [RHEL-228471]     {CVE-2026-45945}
    - iommu/vt-d: Clear Present bit before tearing down context entry (Eder Zulian) [RHEL-228471]     {CVE-2026-45944}
    - iommu/vt-d: Clear Present bit before tearing down PASID entry (Eder Zulian) [RHEL-228471]     {CVE-2026-45894}
    - Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds (CKI Backport Bot) [RHEL-236849]     {CVE-2026-68391}
    - net/mlx5: Fix MCIA register buffer overflow on 32 dword reads (CKI Backport Bot) [RHEL-236786]     {CVE-2026-68293}
    - dm cache policy smq: check allocation under invalidate lock (CKI Backport Bot) [RHEL-231825]     {CVE-2026-53062}
    - dm cache policy smq: fix missing locks in invalidating cache blocks (CKI Backport Bot) [RHEL-231825]     {CVE-2026-53062}
    - crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree (CKI Backport Bot) [RHEL-230408]     {CVE-2026-45959}

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 AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:72624 advisory.

    * kernel: KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 (CVE-2026-46076)
      * kernel: ext4: fix e4b bitmap inconsistency reports (CVE-2026-45942)
      * kernel: KVM: arm64: Reassign nested_mmus array behind mmu_lock (CVE-2026-46317)
      * kernel: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() (CVE-2026-53341)
      * kernel: perf/core: Detach event groups during remove_on_exec (CVE-2026-64556)
      * kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CVE-2026-68299)
      * kernel: crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() (CVE-2026-80522)
      * kernel: perf: Reject exited events as group leaders (CVE-2026-74753)
      * kernel: nvme-tcp: reject a read that transferred too few bytes (CVE-2026-89480)
      * kernel: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation (CVE-2026-89775)


    Bug Fix(es) and Enhancement(s):

      * KVM: s390: Limit adapter indicator access to mapped page [almalinux-10.2.z] (JIRA:AlmaLinux-188661)
      * crypto: xxhash64 should not be fips approved [almalinux-10.2.z] (JIRA:AlmaLinux-254943)
      * kata-tdx TD vCPU stuck at reset vector (EIP=0xFFF0) on Intel Xeon 6 (Granite Rapids / Sierra Forest) ?     guest never executes. (10.2.z) (JIRA:AlmaLinux-260402)

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 Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_72624 advisory.

    * kernel: KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 (CVE-2026-46076)

    * kernel: ext4: fix e4b bitmap inconsistency reports (CVE-2026-45942)

    * kernel: KVM: arm64: Reassign nested_mmus array behind mmu_lock (CVE-2026-46317)

    * kernel: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() (CVE-2026-53341)

    * kernel: perf/core: Detach event groups during remove_on_exec (CVE-2026-64556)

    * kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CVE-2026-68299)

    * kernel: crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() (CVE-2026-80522)

    * kernel: perf: Reject exited events as group leaders (CVE-2026-74753)

    * kernel: nvme-tcp: reject a read that transferred too few bytes (CVE-2026-89480)

    * kernel: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation (CVE-2026-89775)

    Bug Fix(es) and Enhancement(s):

    * KVM: s390: Limit adapter indicator access to mapped page [rhel-10.2.z] (JIRA:Rocky Linux-188661)

    * crypto: xxhash64 should not be fips approved [rhel-10.2.z] (JIRA:Rocky Linux-254943)

    * kata-tdx TD vCPU stuck at reset vector (EIP=0xFFF0) on Intel Xeon 6 (Granite Rapids / Sierra Forest) ?     guest never executes. (10.2.z) (JIRA:Rocky Linux-260402)

Tenable has extracted the preceding description block directly from the CIQ 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 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:72624 advisory.

    * kernel: KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 (CVE-2026-46076)

    * kernel: ext4: fix e4b bitmap inconsistency reports (CVE-2026-45942)

    * kernel: KVM: arm64: Reassign nested_mmus array behind mmu_lock (CVE-2026-46317)

    * kernel: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() (CVE-2026-53341)

    * kernel: perf/core: Detach event groups during remove_on_exec (CVE-2026-64556)

    * kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CVE-2026-68299)

    * kernel: crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() (CVE-2026-80522)

    * kernel: perf: Reject exited events as group leaders (CVE-2026-74753)

    * kernel: nvme-tcp: reject a read that transferred too few bytes (CVE-2026-89480)

    * kernel: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation (CVE-2026-89775)

    Bug Fix(es) and Enhancement(s):

    * KVM: s390: Limit adapter indicator access to mapped page [rhel-10.2.z] (JIRA:Rocky Linux-188661)

    * crypto: xxhash64 should not be fips approved [rhel-10.2.z] (JIRA:Rocky Linux-254943)

    * kata-tdx TD vCPU stuck at reset vector (EIP=0xFFF0) on Intel Xeon 6 (Granite Rapids / Sierra Forest) ?     guest never executes. (10.2.z) (JIRA:Rocky Linux-260402)

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 Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:72624 advisory.

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

    Security Fix(es):

    * kernel: KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 (CVE-2026-46076)

    * kernel: ext4: fix e4b bitmap inconsistency reports (CVE-2026-45942)

    * kernel: KVM: arm64: Reassign nested_mmus array behind mmu_lock (CVE-2026-46317)

    * kernel: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() (CVE-2026-53341)

    * kernel: perf/core: Detach event groups during remove_on_exec (CVE-2026-64556)

    * kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CVE-2026-68299)

    * kernel: crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() (CVE-2026-80522)

    * kernel: perf: Reject exited events as group leaders (CVE-2026-74753)

    * kernel: nvme-tcp: reject a read that transferred too few bytes (CVE-2026-89480)

    * kernel: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation (CVE-2026-89775)

    Bug Fix(es) and Enhancement(s):

    * KVM: s390: Limit adapter indicator access to mapped page [rhel-10.2.z] (JIRA:RHEL-188661)

    * crypto: xxhash64 should not be fips approved [rhel-10.2.z] (JIRA:RHEL-254943)

    * kata-tdx TD vCPU stuck at reset vector (EIP=0xFFF0) on Intel Xeon 6 (Granite Rapids / Sierra Forest) ?     guest never executes. (10.2.z) (JIRA:RHEL-260402)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation Computing the effects of a TLB     invalidation involves looking at the size of the mapping cached by the TLB. For S1 mappings such as VNCR,     this is deducted from the combination of the base granule size and the mapping level. However, this     implies that the S1 MMU is *on*. When the MMU is off, we indicate this with the level being set to a     creative value of -127 (S1_MMU_DISABLED). This ends-up being misinterpreted by pgshift_level_to_ttl() as     it doesn't handle negative levels at all (the level is immediately cast to a u8 and only the bottom two     bits considered), leading to an invalidation size of 0. Not helpful. Tidy-up pgshift_level_to_ttl() to     handle these negative levels, and ttl_to_size() to always return SZ_1G when no valid TTL is present. This     allows the removal of open-coded checks for similar situations. Note that the check for a negative value     not explicitely checking for S1_MMU_DISABLED is deliberate, so that actual negative levels introduced with     LVA2 and D128 can take the same path if we ever support them. (CVE-2026-89775)

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

ID	Name	Product	Family	Type	Severity
475551	Google: sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.106	Tenable Cloud Security	Google COS Security Checks	Local	critical
475551	Google: sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.106	Tenable Self-Hosted Container Security	Google COS Security Checks	Local	critical
365283	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-3187)	Nessus	Amazon Linux Local Security Checks	Local	medium
362983	Oracle Linux 10 : kernel (ELSA-2026-72624)	Nessus	Oracle Linux Local Security Checks	Local	critical
362944	AlmaLinux 10 : kernel (ALSA-2026:72624)	Nessus	Alma Linux Local Security Checks	Local	critical
359532	Rocky Linux 10.2 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (crlsa-2026_72624)	Nessus	Rocky Linux Local Security Checks	Local	critical
351440	RockyLinux 10 : kernel (RLSA-2026:72624)	Nessus	Rocky Linux Local Security Checks	Local	critical
351147	RHEL 10 : kernel (RHSA-2026:72624)	Nessus	Red Hat Local Security Checks	Local	critical
349292	Linux Distros Unpatched Vulnerability : CVE-2026-89775	Nessus	Misc.	Local	critical

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