CVE-2024-36975

Summary

In the Linux kernel, the following vulnerability has been resolved:

KEYS: trusted: Do not use WARN when encode fails

When asn1_encode_sequence() fails, WARN is not the correct solution.

  1. asn1_encode_sequence() is not an internal function (located in lib/asn1_encode.c).
  2. Location is known, which makes the stack trace useless.
  3. Results a crash if panic_on_warn is set.

It is also noteworthy that the use of WARN is undocumented, and it should be avoided unless there is a carefully considered rationale to use it.

Replace WARN with pr_err, and print the return value instead, which is only useful piece of information.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf2219745250f388edacabe6cca73654131c67d0a < 96f650995c70237b061b497c66755e32908f8972affected
LinuxLinuxf2219745250f388edacabe6cca73654131c67d0a < 681935009fec3fc22af97ee312d4a24ccf3cf087affected
LinuxLinuxf2219745250f388edacabe6cca73654131c67d0a < 1c652e1e10676f942149052d9329b8bf2703529aaffected
LinuxLinuxf2219745250f388edacabe6cca73654131c67d0a < d32c6e09f7c4bec3ebc4941323f0aa6366bc1487affected
LinuxLinuxf2219745250f388edacabe6cca73654131c67d0a < ff91cc12faf798f573dab2abc976c1d5b1862feaaffected
LinuxLinuxf2219745250f388edacabe6cca73654131c67d0a < 050bf3c793a07f96bd1e2fd62e1447f731ed733baffected
LinuxLinux5.13affected
LinuxLinux0 < 5.13unaffected
LinuxLinux5.15.160 <= 5.15.*unaffected
LinuxLinux6.1.92 <= 6.1.*unaffected
LinuxLinux6.6.32 <= 6.6.*unaffected
LinuxLinux6.8.11 <= 6.8.*unaffected
LinuxLinux6.9.2 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References