KEYS: prevent NULL pointer dereference in find_asymmetric_key()
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- 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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Weaknesses (CWE)
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MITRE ATT&CK TTPs
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