bpf: Fix immediate JMP JEQ/JNE on MIPS32

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98572
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:09 UTC
Updated2026-10-19 10:19:15 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: bpf: Fix immediate JMP JEQ/JNE on MIPS32 An addu instruction was emitted instead of addiu, causing the immediate value 1 to be interpreted as register $at. This made the comparison result invalid when the immediate operand was negative. Note that $at is mapped to BPF_REG_AX, which is used for constant blinding. Fix the instruction to use the immediate form. Found with test_bpf on MIPS32r1 emulated by QEMU.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 1547e9f3a7d71971216e6dba30270cae13fe4e02 git Not specified
CNA Linux Linux affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 beeae92e70e705e90a0d6d9b3b8498ee3b92f495 git Not specified
CNA Linux Linux affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0 git Not specified
CNA Linux Linux affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 876ef04c75c2751acfd355606fca3eced71dec65 git Not specified
CNA Linux Linux affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8 git Not specified
CNA Linux Linux affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 db762fd96be225bd06161c9631160c755d891693 git Not specified
CNA Linux Linux affected 5.16 Not specified
CNA Linux Linux unaffected 5.16 semver Not specified
CNA Linux Linux unaffected 6.1.189 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.112 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.55 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.9 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/db762fd96be225bd06161c9631160c755d891693 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/876ef04c75c2751acfd355606fca3eced71dec65 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1547e9f3a7d71971216e6dba30270cae13fe4e02 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/beeae92e70e705e90a0d6d9b3b8498ee3b92f495 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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