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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/0d3b0706ada15c333e6f9faf19590ff715e45d1e cve-icon cve-icon
https://git.kernel.org/stable/c/13b5b401ead95b5d8266f64904086c55b6024900 cve-icon cve-icon
https://git.kernel.org/stable/c/3322fa8f2aa40b0b3651034cd541647a600cc6c0 cve-icon cve-icon
https://git.kernel.org/stable/c/70fd1966c93bf3bfe3fe6d753eb3d83a76597eef cve-icon cve-icon
https://git.kernel.org/stable/c/a3765b497a4f5224cb2f7a6a2d3357d3066214ee cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html cve-icon
https://lore.kernel.org/linux-cve-announce/2024102110-CVE-2024-47743-77c3@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-47743 cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-47743 cve-icon
History

Mon, 03 Nov 2025 23:30:00 +0000

Type Values Removed Values Added
References

Tue, 22 Oct 2024 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-476
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Tue, 22 Oct 2024 01:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Mon, 21 Oct 2024 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 21 Oct 2024 12:30:00 +0000

Type Values Removed Values Added
Description 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.
Title KEYS: prevent NULL pointer dereference in find_asymmetric_key()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-10-21T12:14:11.173Z

Updated: 2025-11-03T22:21:39.860Z

Reserved: 2024-09-30T16:00:12.960Z

Link: CVE-2024-47743

cve-icon Vulnrichment

Updated: 2025-11-03T22:21:39.860Z

cve-icon NVD

Status : Modified

Published: 2024-10-21T13:15:04.393

Modified: 2025-11-03T23:16:21.480

Link: CVE-2024-47743

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-10-21T00:00:00Z

Links: CVE-2024-47743 - Bugzilla