posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime()
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: 2 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-667 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime() If get_clock_desc() succeeds, it calls fget() for the clockid's fd, and get the clk->rwsem read lock, so the error path should release the lock to make the lock balance and fput the clockid's fd to make the refcount balance and release the fd related resource. However the below commit left the error path locked behind resulting in unbalanced locking. Check timespec64_valid_strict() before get_clock_desc() to fix it, because the "ts" is not changed after that. [[email protected]: fixed commit message typo]
Why it matters now
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 | 5.10.228 to before 5.10.229; 5.15.169 to before 5.15.170; 6.1.114 to before 6.1.115; 6.6.58 to before 6.6.59; 6.11.5 to before 6.11.6 | 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6 | Patch available | CNA |
- Linux VendorLinux Affected 5.10.228 to before 5.10.229; 5.15.169 to before 5.15.170; 6.1.114 to before 6.1.115; 6.6.58 to before 6.6.59; 6.11.5 to before 6.11.6 Fixed in 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.10.228 to before 5.11 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.15.169:*:*:*:*:*:*:* | 5.15.169 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1.114:*:*:*:*:*:*:* | 6.1.114 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.6.58:*:*:*:*:*:*:* | 6.6.58 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.11.5:*:*:*:*:*:*:* | 6.11.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* | 6.12 rc4 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.10.228 to before 5.11 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.15.169:*:*:*:*:*:*:* Versions 5.15.169 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1.114:*:*:*:*:*:*:* Versions 6.1.114 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.6.58:*:*:*:*:*:*:* Versions 6.6.58 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.11.5:*:*:*:*:*:*:* Versions 6.11.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* Versions 6.12 rc4 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6
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 |
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-50210
- 2026-10-03 Alias added: GHSA-975c-w82q-mxhv
References
Patch 8
- https://git.kernel.org/stable/c/d005400262ddaf1ca1666bbcd1acf42fe81d57ce
- https://git.kernel.org/stable/c/a8219446b95a859488feaade674d13f9efacfa32
- https://git.kernel.org/stable/c/c7fcfdba35abc9f39b83080c2bce398dad13a943
- https://git.kernel.org/stable/c/e56e0ec1b79f5a6272c6e78b36e9d593aa0449af
- https://git.kernel.org/stable/c/5f063bbf1ee6b01611c016b54e050a41506eb794
- https://git.kernel.org/stable/c/1ba33b327c3f88a7baee598979d73ab5b44d41cc
- https://git.kernel.org/stable/c/b27330128eca25179637c1816d5a72d6cc408c66
- https://git.kernel.org/stable/c/6e62807c7fbb3c758d233018caf94dfea9c65dbd
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Sources
- CVE-2024-50210 · CVE Program
- CVE-2024-50210 · NVD
- FIRST EPSS
- GHSA-975c-w82q-mxhv · GitHub Advisory Database · CC BY 4.0
- CVE-2024-50210 · Red Hat security data · CC BY 4.0
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