CVE-2026-98572 (GCVE-0-2026-98572)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-19 09:21
VLAI
Title
bpf: Fix immediate JMP JEQ/JNE on MIPS32
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: eb63cfcd2ee8ec3805f6881f43341f589c3d2278 , < 1547e9f3a7d71971216e6dba30270cae13fe4e02 (git)
Affected: eb63cfcd2ee8ec3805f6881f43341f589c3d2278 , < beeae92e70e705e90a0d6d9b3b8498ee3b92f495 (git)
Affected: eb63cfcd2ee8ec3805f6881f43341f589c3d2278 , < 6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0 (git)
Affected: eb63cfcd2ee8ec3805f6881f43341f589c3d2278 , < 876ef04c75c2751acfd355606fca3eced71dec65 (git)
Affected: eb63cfcd2ee8ec3805f6881f43341f589c3d2278 , < 1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8 (git)
Affected: eb63cfcd2ee8ec3805f6881f43341f589c3d2278 , < db762fd96be225bd06161c9631160c755d891693 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix immediate JMP JEQ/JNE on MIPS32\n\nAn addu instruction was emitted instead of addiu, causing the immediate\nvalue 1 to be interpreted as register $at. This made the comparison\nresult invalid when the immediate operand was negative. Note that $at\nis mapped to BPF_REG_AX, which is used for constant blinding.\n\nFix the instruction to use the immediate form.\n\nFound with test_bpf on MIPS32r1 emulated by QEMU."
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      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:21:57.711Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/db762fd96be225bd06161c9631160c755d891693"
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    "dateReserved": "2026-09-25T10:25:14.357Z",
    "dateUpdated": "2026-10-19T09:21:57.711Z",
    "state": "PUBLISHED"
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        "metrics": {},
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      "title": "kernel: bpf: Fix immediate JMP JEQ/JNE on MIPS32",
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  }
}



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