sysctl: always initialize i_uid/i_gid
Priority LOW 24CWE-908Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 5 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-908 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: sysctl: always initialize i_uid/i_gid Always initialize i_uid/i_gid inside the sysfs core so set_ownership() can safely skip setting them. Commit 5ec27ec735ba ("fs/proc/proc_sysctl.c: fix the default values of i_uid/i_gid on /proc/sys inodes.") added defaults for i_uid/i_gid when set_ownership() was not implemented. It also missed adjusting net_ctl_set_ownership() to use the same default values in case the computation of a better value failed.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00218 12th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.10, 4.15, 4.20 +8Red Hat: 1 advisoryRed Hat: 5 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 | 4.9.187 to before 4.10; 4.14.135 to before 4.15; 4.19.61 to before 4.20; 5.1.20 to before 5.2; 5.2.3 to before 5.3 | 4.10, 4.15, 4.20, 5.2, 5.3 | Patch available | CNA |
| Linux | Linux | 5.3 and later | 5.10.224, 5.15.165, 6.1.104, 6.6.45, 6.10.3, 6.11 | Patch available | CNA |
- Linux VendorLinux Affected 4.9.187 to before 4.10; 4.14.135 to before 4.15; 4.19.61 to before 4.20; 5.1.20 to before 5.2; 5.2.3 to before 5.3 Fixed in 4.10, 4.15, 4.20, 5.2, 5.3 Patch available CNA
- Linux VendorLinux Affected 5.3 and later Fixed in 5.10.224, 5.15.165, 6.1.104, 6.6.45, 6.10.3, 6.11 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.9.187 to before 4.10; 4.14.135 to before 4.15; 4.19.61 to before 4.20; 5.1.20 to before 5.2; 5.2.3 to before 5.10.224; 5.11 to before 5.15.165; 5.16 to before 6.1.104; 6.2 to before 6.6.45; 6.7 to before 6.10.3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.9.187 to before 4.10; 4.14.135 to before 4.15; 4.19.61 to before 4.20; 5.1.20 to before 5.2; 5.2.3 to before 5.10.224; 5.11 to before 5.15.165; 5.16 to before 6.1.104; 6.2 to before 6.6.45; 6.7 to before 6.10.3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.10, 4.15, 4.20, 5.2, 5.3
- Fix · CNA Linux (Linux) Fixed in 5.10.224, 5.15.165, 6.1.104, 6.6.45, 6.10.3, 6.11
Red Hat 1 advisory
- RHSA-2025:6966 Released 2025-05-13 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.12.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.12.1.el9_6, kernel-64k-devel-5.14.0-570.12.1.el9_6 +12
- Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.12.1.el9_6, kernel-64k-5.14.0-570.12.1.el9_6, kernel-64k-core-5.14.0-570.12.1.el9_6 +28
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.12.1.el9_6, libperf-5.14.0-570.12.1.el9_6
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.12.1.el9_6, kernel-rt-64k-5.14.0-570.12.1.el9_6, kernel-rt-64k-core-5.14.0-570.12.1.el9_6 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.12.1.el9_6, kernel-rt-core-5.14.0-570.12.1.el9_6, kernel-rt-debug-5.14.0-570.12.1.el9_6 +11
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2025:6966 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2025:6966 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2025:6966 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2025:6966 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2025:6966 |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2024-42312
- 2026-10-03 Alias added: GHSA-fcjf-98wx-3v8x
References
Patch 6
- https://git.kernel.org/stable/c/b2591c89a6e2858796111138c38fcb6851aa1955
- https://git.kernel.org/stable/c/34a86adea1f2b3c3f9d864c8cce09dca644601ab
- https://git.kernel.org/stable/c/1deae34db9f4f8e0e03f891be2e2e15c15c8ac05
- https://git.kernel.org/stable/c/ffde3af4b29bf97d62d82e1d45275587e10a991a
- https://git.kernel.org/stable/c/c7e2f43d182f5dde473389dbb39f16c9f0d64536
- https://git.kernel.org/stable/c/98ca62ba9e2be5863c7d069f84f7166b45a5b2f4
More Linux Kernel vulnerabilities
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- 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-2024-42312 · CVE Program
- CVE-2024-42312 · NVD
- FIRST EPSS
- GHSA-fcjf-98wx-3v8x · GitHub Advisory Database · CC BY 4.0
- CVE-2024-42312 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences