selinux,smack: don't bypass permissions check in inode_setsecctx hook
Priority MEDIUM 43CWE-276Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 14 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00531 45th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.227, 5.15.168, 6.1.113 +3Red Hat: 4 advisoriesRed Hat: 14 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.11 and later | 5.10.227, 5.15.168, 6.1.113, 6.6.49, 6.10.8, 6.11 | Patch available | CNA |
- Linux VendorLinux Affected 3.11 and later Fixed in 5.10.227, 5.15.168, 6.1.113, 6.6.49, 6.10.8, 6.11 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 6.6.49; 6.7 to before 6.10.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* | 6.11 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* | 6.11 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:* | 6.11 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:* | 6.11 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:* | 6.11 rc5 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 6.6.49; 6.7 to before 6.10.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* Versions 6.11 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* Versions 6.11 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:* Versions 6.11 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:* Versions 6.11 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:* Versions 6.11 rc5 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.227, 5.15.168, 6.1.113, 6.6.49, 6.10.8, 6.11
Red Hat 4 advisories
- RHSA-2025:1658 Released 2025-02-19 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.55.1.el9_4, libperf-5.14.0-427.55.1.el9_4
- Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.55.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.55.1.el9_4, kernel-64k-devel-5.14.0-427.55.1.el9_4 +11
- 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 +29
- 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-debug-5.14.0-427.55.1.el9_4 +9
- Red Hat Enterprise Linux Real Time for NFV 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-debug-5.14.0-427.55.1.el9_4 +11
- RHSA-2024:10943 Released 2024-12-11 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.32.1.el8_10, kernel-4.18.0-553.32.1.el8_10, kernel-abi-stablelists-4.18.0-553.32.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.32.1.el8_10
- RHSA-2024:10939 Released 2024-12-11 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-503.16.1.el9_5, libperf-5.14.0-503.16.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.16.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.16.1.el9_5, kernel-64k-devel-5.14.0-503.16.1.el9_5 +11
- 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 +30
- 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-debug-5.14.0-503.16.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (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-debug-5.14.0-503.16.1.el9_5 +11
Show 1 more Red Hat advisories
- RHSA-2024:10944 Released 2024-12-11 · Red Hat rating Moderatekernel-rt security update
- Red Hat Enterprise Linux NFV (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-debug-4.18.0-553.32.1.rt7.373.el8_10 +9
- 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-debug-4.18.0-553.32.1.rt7.373.el8_10 +7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:10939 |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2025:1658 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:10939 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:1658 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:10943 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:10939 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2025:1658 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:10943 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:10944 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:10944 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:10939 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2025:1658 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2024:10939 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) | Fixed | RHSA-2025:1658 |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-46695
- 2026-10-03 Alias added: GHSA-p594-vh26-gh4w
- 2026-10-29 Affected versions changed · Red Hat
References
Patch 3
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-46695 · CVE Program
- CVE-2024-46695 · NVD
- FIRST EPSS
- GHSA-p594-vh26-gh4w · GitHub Advisory Database · CC BY 4.0
- CVE-2024-46695 · Red Hat security data · CC BY 4.0
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