CVE-2025-21789
HIGH severity · CVSS 7.3 · Out-of-bounds read
7.3CVSS HIGH
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactLow
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/6287f1a8c16138c2ec750953e35039634018c84a ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/6287f1a8c16138c2ec750953e35039634018c84aPatch
- https://git.kernel.org/stable/c/964a8895704a22efc06a2a3276b624a5ae985a06Patch
- https://git.kernel.org/stable/c/9f15a8df542c0f08732a67d1a14ee7c22948fb97Patch
- https://git.kernel.org/stable/c/d6508ffff32b44b6d0de06704034e4eef1c307a7Patch