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Fencer Vulns
critical 9.8

CVE-2024-46695 in the critical feed json

selinux,smack: don't bypass permissions check in inode_setsecctx hook

published 2024-09-13 2 y ago modified 2026-08-05 3 mo ago also EUVD-2024-41956

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

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

selinux,smack: don't bypass permissions check in inode_setsecctx hook

Marek Gresko reports that the root user on an NFS client is able to change the security labels on files on an NFS filesystem that is exported with root squashing enabled.

The end of the kerneldoc comment for __vfs_setxattr_noperm() states:

* This function requires the caller to lock the inode's i_mutex before it * is executed. It also assumes that the caller will make the appropriate * permission checks.

nfsd_setattr() does do permissions checking via fh_verify() and nfsd_permission(), but those don't do all the same permissions checks that are done by security_inode_setxattr() and its related LSM hooks do.

Since nfsd_setattr() is the only consumer of security_inode_setsecctx(), simplest solution appears to be to replace the call to __vfs_setxattr_noperm() with a call to __vfs_setxattr_locked(). This fixes the above issue and has the added benefit of causing nfsd to recall conflicting delegations on a file when a client tries to change its security label.

Patch / fix

  • Linux Linux 5.10.227, 5.15.168, 6.1.113, 6.6.49, 6.10.8, 6.11
  • linux Debian 12 6.1.115-1
  • linux Debian 14, Debian 13 6.10.9-1

debian advisories DEBIAN-CVE-2024-46695

  • linux Ubuntu 22.04 LTS 5.15.0-127.137
  • linux Ubuntu 24.04 LTS 6.8.0-50.51
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1073.79
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1020.22
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1072.80
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1019.21
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1070.76
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1015.19

ubuntu advisories UBUNTU-CVE-2024-46695

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 8 4.18.0-553.32.1.el8_10
  • perf RHEL 8 4.18.0-553.32.1.el8_10
  • bpftool RHEL 8 4.18.0-553.32.1.el8_10
  • kernel-core RHEL 8 4.18.0-553.32.1.el8_10
  • kernel-tools RHEL 8 4.18.0-553.32.1.el8_10
  • python3-perf RHEL 8 4.18.0-553.32.1.el8_10
  • kernel-modules RHEL 8 4.18.0-553.32.1.el8_10
  • kernel-zfcpdump RHEL 8 4.18.0-553.32.1.el8_10

red hat advisories RHSA-2025:1658RHSA-2024:10943RHSA-2024:10944RHSA-2024:10939

  • kernel-rt Linux Micro 6.0 6.4.0-11.1
  • kernel-source-rt Linux Micro 6.0 6.4.0-11.1
  • kernel-livepatch-MICRO-6-0-RT_Update_3 Linux Micro 6.0 1-1.2
  • kernel-source Linux Micro 6.0 6.4.0-20.1
  • kernel-default Linux Micro 6.0 6.4.0-20.1
  • kernel-kvmsmall Linux Micro 6.0 6.4.0-20.1
  • kernel-default-base Linux Micro 6.0 6.4.0-17.1.1.51
  • kernel-livepatch-MICRO-6-0_Update_3 Linux Micro 6.0 1-1.2

suse advisories SUSE-SU-2025:20077-1SUSE-SU-2025:20073-1SUSE-SU-2024:3585-1SUSE-SU-2024:3567-1SUSE-SU-2024:3565-1SUSE-SU-2024:3564-1

  • kernel AlmaLinux 9 5.14.0-503.16.1.el9_5
  • rv AlmaLinux 9 5.14.0-503.16.1.el9_5
  • perf AlmaLinux 9 5.14.0-503.16.1.el9_5
  • rtla AlmaLinux 9 5.14.0-503.16.1.el9_5
  • bpftool AlmaLinux 9 7.4.0-503.16.1.el9_5
  • libperf AlmaLinux 9 5.14.0-503.16.1.el9_5
  • kernel-rt AlmaLinux 9 5.14.0-503.16.1.el9_5
  • kernel-64k AlmaLinux 9 5.14.0-503.16.1.el9_5

almalinux advisories ALSA-2024:10939ALSA-2024:10943ALSA-2024:10944

  • kernel-rt Rocky Linux 8 4.18.0-553.32.1.rt7.373.el8_10
  • kernel Rocky Linux 8 4.18.0-553.32.1.el8_10

rocky linux advisories RLSA-2024:10944RLSA-2024:10943

  • kernel CBL-Mariner 2.0 5.15.176.3-1

azure linux advisories AZL-49338

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-46695 updated cvss 6.3

kernel: selinux,smack: don't bypass permissions check in inode_setsecctx hook

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 9) libperf 5.14.0-503.16.1.el9_5, kernel-debuginfo-common-s390x 5.14.0-503.16.1.el9_5, kernel-debuginfo-common-x86_64 5.14.0-503.16.1.el9_5, kernel-debuginfo-common-aarch64 5.14.0-503.16.1.el9_5, kernel-debuginfo-common-ppc64le 5.14.0-503.16.1.el9_5
    fixed: vendor fix RHSA-2024:10939
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.55.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.55.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.55.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.55.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.55.1.el9_4
    fixed: vendor fix RHSA-2025:1658
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-503.16.1.el9_5, perf 5.14.0-503.16.1.el9_5, rtla 5.14.0-503.16.1.el9_5, kernel-devel-matched 5.14.0-503.16.1.el9_5, kernel-64k-devel-matched 5.14.0-503.16.1.el9_5, kernel-debug-devel-matched 5.14.0-503.16.1.el9_5, +6 more
    fixed: vendor fix RHSA-2024:10939
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.55.1.el9_4, perf 5.14.0-427.55.1.el9_4, rtla 5.14.0-427.55.1.el9_4, kernel-devel-matched 5.14.0-427.55.1.el9_4, kernel-64k-devel-matched 5.14.0-427.55.1.el9_4, kernel-debug-devel-matched 5.14.0-427.55.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:1658
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.32.1.el8_10, kernel 4.18.0-553.32.1.el8_10, bpftool 4.18.0-553.32.1.el8_10, kernel-core 4.18.0-553.32.1.el8_10, kernel-tools 4.18.0-553.32.1.el8_10, python3-perf 4.18.0-553.32.1.el8_10, +15 more
    fixed: vendor fix RHSA-2024:10943
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.4.0-503.16.1.el9_5, kernel 5.14.0-503.16.1.el9_5, kernel-64k 5.14.0-503.16.1.el9_5, kernel-core 5.14.0-503.16.1.el9_5, kernel-tools 5.14.0-503.16.1.el9_5, python3-perf 5.14.0-503.16.1.el9_5, +29 more
    fixed: vendor fix RHSA-2024:10939
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.55.1.el9_4, kernel 5.14.0-427.55.1.el9_4, kernel-64k 5.14.0-427.55.1.el9_4, kernel-core 5.14.0-427.55.1.el9_4, kernel-tools 5.14.0-427.55.1.el9_4, python3-perf 5.14.0-427.55.1.el9_4, +28 more
    fixed: vendor fix RHSA-2025:1658
show 7 more
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.32.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.32.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.32.1.el8_10
    fixed: vendor fix RHSA-2024:10943
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-kvm 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-core 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-modules 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-kvm 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-core 4.18.0-553.32.1.rt7.373.el8_10, +4 more
    fixed: vendor fix RHSA-2024:10944
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-503.16.1.el9_5, kernel-rt-core 5.14.0-503.16.1.el9_5, kernel-rt-modules 5.14.0-503.16.1.el9_5, kernel-rt-debug-core 5.14.0-503.16.1.el9_5, kernel-rt-modules-core 5.14.0-503.16.1.el9_5, kernel-rt-debug-modules 5.14.0-503.16.1.el9_5, +4 more
    fixed: vendor fix RHSA-2024:10939
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.55.1.el9_4, kernel-rt-core 5.14.0-427.55.1.el9_4, kernel-rt-modules 5.14.0-427.55.1.el9_4, kernel-rt-debug-core 5.14.0-427.55.1.el9_4, kernel-rt-modules-core 5.14.0-427.55.1.el9_4, kernel-rt-debug-modules 5.14.0-427.55.1.el9_4, +4 more
    fixed: vendor fix RHSA-2025:1658
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-503.16.1.el9_5, kernel-rt-kvm 5.14.0-503.16.1.el9_5, kernel-rt-core 5.14.0-503.16.1.el9_5, kernel-rt-modules 5.14.0-503.16.1.el9_5, kernel-rt-debug-kvm 5.14.0-503.16.1.el9_5, kernel-rt-debug-core 5.14.0-503.16.1.el9_5, +6 more
    fixed: vendor fix RHSA-2024:10939
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.55.1.el9_4, kernel-rt-kvm 5.14.0-427.55.1.el9_4, kernel-rt-core 5.14.0-427.55.1.el9_4, kernel-rt-modules 5.14.0-427.55.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.55.1.el9_4, kernel-rt-debug-core 5.14.0-427.55.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:1658
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-core 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-modules 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-core 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-debug-modules 4.18.0-553.32.1.rt7.373.el8_10, kernel-rt-modules-extra 4.18.0-553.32.1.rt7.373.el8_10, +2 more
    fixed: vendor fix RHSA-2024:10944

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Linux Linux

Classification

Weakness
  • CWE-276 Incorrect Default Permissions
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.