NULL Pointer Dereference Affecting kernel-devel package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-KERNELDEVEL-8240742
- published 22 Oct 2024
- disclosed 21 Oct 2024
Introduced: 21 Oct 2024
CVE-2024-47743 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:7 kernel-devel.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-devel package and not the kernel-devel package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-47743
- https://git.kernel.org/stable/c/0d3b0706ada15c333e6f9faf19590ff715e45d1e
- https://git.kernel.org/stable/c/13b5b401ead95b5d8266f64904086c55b6024900
- https://git.kernel.org/stable/c/3322fa8f2aa40b0b3651034cd541647a600cc6c0
- https://git.kernel.org/stable/c/70fd1966c93bf3bfe3fe6d753eb3d83a76597eef
- https://git.kernel.org/stable/c/a3765b497a4f5224cb2f7a6a2d3357d3066214ee