Riskcovery

CVE-2026-98572

bpf: Fix immediate JMP JEQ/JNE on MIPS32

State
Published
Severity
Not scored
Published
Oct 18, 2026
Updated
Oct 19, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

In 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • eb63cfcd2ee8ec3805f6881f43341f589c3d2278 to before 1547e9f3a7d71971216e6dba30270cae13fe4e02Affected
  • eb63cfcd2ee8ec3805f6881f43341f589c3d2278 to before beeae92e70e705e90a0d6d9b3b8498ee3b92f495Affected
  • eb63cfcd2ee8ec3805f6881f43341f589c3d2278 to before 6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0Affected
  • eb63cfcd2ee8ec3805f6881f43341f589c3d2278 to before 876ef04c75c2751acfd355606fca3eced71dec65Affected
  • eb63cfcd2ee8ec3805f6881f43341f589c3d2278 to before 1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8Affected
  • eb63cfcd2ee8ec3805f6881f43341f589c3d2278 to before db762fd96be225bd06161c9631160c755d891693Affected
LinuxLinux
  • 5.16Affected
  • before 5.16Not affected
  • 6.1.189 through 6.1.*Not affected
  • 6.6.158 through 6.6.*Not affected
  • 6.12.112 through 6.12.*Not affected
  • 6.18.55 through 6.18.*Not affected
  • 7.2.9 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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