CVE-2025-21789

Summary

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

LoongArch: csum: Fix OoB access in IP checksum code for negative lengths

Commit 69e3a6aa6be2 ("LoongArch: Add checksum optimization for 64-bit system") would cause an undefined shift and an out-of-bounds read.

Commit 8bd795fedb84 ("arm64: csum: Fix OoB access in IP checksum code for negative lengths") fixes the same issue on ARM64.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux69e3a6aa6be21de6aaf38130fad97ecde34a193c < 964a8895704a22efc06a2a3276b624a5ae985a06affected
LinuxLinux69e3a6aa6be21de6aaf38130fad97ecde34a193c < 9f15a8df542c0f08732a67d1a14ee7c22948fb97affected
LinuxLinux69e3a6aa6be21de6aaf38130fad97ecde34a193c < d6508ffff32b44b6d0de06704034e4eef1c307a7affected
LinuxLinux69e3a6aa6be21de6aaf38130fad97ecde34a193c < 6287f1a8c16138c2ec750953e35039634018c84aaffected
LinuxLinux6.4affected
LinuxLinux0 < 6.4unaffected
LinuxLinux6.6.79 <= 6.6.*unaffected
LinuxLinux6.12.16 <= 6.12.*unaffected
LinuxLinux6.13.4 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References