KEYS: prevent NULL pointer dereference in find_asymmetric_key()
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: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In the Linux kernel, the following vulnerability has been resolved: KEYS: prevent NULL pointer dereference in find_asymmetric_key() In find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2} arguments, the kernel will first emit WARN but then have an oops because id_2 gets dereferenced anyway. Add the missing id_2 check and move WARN_ON() to the final else branch to avoid duplicate NULL checks. Found by Linux Verification Center (linuxtesting.org) with Svace static analysis tool.
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 | 5.17 and later | 6.1.113, 6.6.54, 6.10.13, 6.11.2, 6.12 | Patch available | CNA |
- Linux VendorLinux Affected 5.17 and later Fixed in 6.1.113, 6.6.54, 6.10.13, 6.11.2, 6.12 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.17 to before 6.1.113; 6.2 to before 6.6.54; 6.7 to before 6.10.13; 6.11 to before 6.11.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.17 to before 6.1.113; 6.2 to before 6.6.54; 6.7 to before 6.10.13; 6.11 to before 6.11.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.113, 6.6.54, 6.10.13, 6.11.2, 6.12
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 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-47743
- 2026-10-03 Alias added: GHSA-2xch-4r76-8cgw
References
Patch 5
- https://git.kernel.org/stable/c/3322fa8f2aa40b0b3651034cd541647a600cc6c0
- https://git.kernel.org/stable/c/a3765b497a4f5224cb2f7a6a2d3357d3066214ee
- https://git.kernel.org/stable/c/13b5b401ead95b5d8266f64904086c55b6024900
- https://git.kernel.org/stable/c/0d3b0706ada15c333e6f9faf19590ff715e45d1e
- https://git.kernel.org/stable/c/70fd1966c93bf3bfe3fe6d753eb3d83a76597eef
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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-2024-47743 · CVE Program
- CVE-2024-47743 · NVD
- FIRST EPSS
- GHSA-2xch-4r76-8cgw · GitHub Advisory Database · CC BY 4.0
- CVE-2024-47743 · 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