CVE-2024-35878

Summary

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

of: module: prevent NULL pointer dereference in vsnprintf()

In of_modalias(), we can get passed the str and len parameters which would cause a kernel oops in vsnprintf() since it only allows passing a NULL ptr when the length is also 0. Also, we need to filter out the negative values of the len parameter as these will result in a really huge buffer since snprintf() takes size_t parameter while ours is ssize_t…

Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbd7a7ed774afd1a4174df34227626c95573be517 < e4a449368a2ce6d57a775d0ead27fc07f5a86e5baffected
LinuxLinuxbd7a7ed774afd1a4174df34227626c95573be517 < 544561dc56f7e69a053c25e11e6170f48bb97898affected
LinuxLinuxbd7a7ed774afd1a4174df34227626c95573be517 < a1aa5390cc912934fee76ce80af5f940452fa987affected
LinuxLinux6.4affected
LinuxLinux0 < 6.4unaffected
LinuxLinux6.6.26 <= 6.6.*unaffected
LinuxLinux6.8.5 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References