CVE-2024-41032

Summary

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

mm: vmalloc: check if a hash-index is in cpu_possible_mask

The problem is that there are systems where cpu_possible_mask has gaps between set CPUs, for example SPARC. In this scenario addr_to_vb_xa() hash function can return an index which accesses to not-possible and not setup CPU area using per_cpu() macro. This results in an oops on SPARC.

A per-cpu vmap_block_queue is also used as hash table, incorrectly assuming the cpu_possible_mask has no gaps. Fix it by adjusting an index to a next possible CPU.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux062eacf57ad91b5c272f89dc964fd6dd9715ea7d < 28acd531c9a365dac01b32e6bc54aed8c1429bcbaffected
LinuxLinux062eacf57ad91b5c272f89dc964fd6dd9715ea7d < 47f9b6e49b422392fb0e348a65eb925103ba1882affected
LinuxLinux062eacf57ad91b5c272f89dc964fd6dd9715ea7d < a34acf30b19bc4ee3ba2f1082756ea2604c19138affected
LinuxLinux6.4affected
LinuxLinux0 < 6.4unaffected
LinuxLinux6.6.41 <= 6.6.*unaffected
LinuxLinux6.9.10 <= 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