Description

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.

Classification

CVE ID: CVE-2025-21789

Affected Products

Vendor: Linux, Linux

Product: Linux, Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 1.82% (scored less or equal to compared to others)

EPSS Date: 2025-03-27 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-21789
https://git.kernel.org/stable/c/964a8895704a22efc06a2a3276b624a5ae985a06
https://git.kernel.org/stable/c/9f15a8df542c0f08732a67d1a14ee7c22948fb97
https://git.kernel.org/stable/c/d6508ffff32b44b6d0de06704034e4eef1c307a7
https://git.kernel.org/stable/c/6287f1a8c16138c2ec750953e35039634018c84a

Timeline