CVE-2024-47743

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 < 3322fa8f2aa40b0b3651034cd541647a600cc6c0affected
LinuxLinux7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 < a3765b497a4f5224cb2f7a6a2d3357d3066214eeaffected
LinuxLinux7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 < 13b5b401ead95b5d8266f64904086c55b6024900affected
LinuxLinux7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 < 0d3b0706ada15c333e6f9faf19590ff715e45d1eaffected
LinuxLinux7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 < 70fd1966c93bf3bfe3fe6d753eb3d83a76597eefaffected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux6.1.113 <= 6.1.*unaffected
LinuxLinux6.6.54 <= 6.6.*unaffected
LinuxLinux6.10.13 <= 6.10.*unaffected
LinuxLinux6.11.2 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References