Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 before 1547e9f3a7d71971216e6dba30270cae13fe4e02; affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 before beeae92e70e705e90a0d6d9b3b8498ee3b92f495; affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 before 6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0; affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 before 876ef04c75c2751acfd355606fca3eced71dec65; affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 before 1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8; affected eb63cfcd2ee8ec3805f6881f43341f589c3d2278 before db762fd96be225bd06161c9631160c755d891693 |
| Linux / Linux | affected 5.16; unaffected 0 before 5.16; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.55 through 6.18.*; unaffected 7.2.9 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/1547e9f3a7d71971216e6dba30270cae13fe4e02
- https://git.kernel.org/stable/c/beeae92e70e705e90a0d6d9b3b8498ee3b92f495
- https://git.kernel.org/stable/c/6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0
- https://git.kernel.org/stable/c/876ef04c75c2751acfd355606fca3eced71dec65
- https://git.kernel.org/stable/c/1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8
- https://git.kernel.org/stable/c/db762fd96be225bd06161c9631160c755d891693