{"id":"CVE-2026-98572","state":"PUBLISHED","title":"bpf: Fix immediate JMP JEQ/JNE on MIPS32","description":"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.","publishedAt":"2026-10-18T15:18:38.105Z","updatedAt":"2026-10-19T09:21:57.711Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"1547e9f3a7d71971216e6dba30270cae13fe4e02","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"beeae92e70e705e90a0d6d9b3b8498ee3b92f495","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"876ef04c75c2751acfd355606fca3eced71dec65","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"db762fd96be225bd06161c9631160c755d891693","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/mips/net/bpf_jit_comp32.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/mips/net/bpf_jit_comp32.c"]}],"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"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98572.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98572","state":"PUBLISHED","datePublished":"2026-10-18T15:18:38.105Z","dateUpdated":"2026-10-19T09:21:57.711Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.357Z"},"containers":{"cna":{"title":"bpf: Fix immediate JMP JEQ/JNE on MIPS32","descriptions":[{"lang":"en","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"1547e9f3a7d71971216e6dba30270cae13fe4e02","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"beeae92e70e705e90a0d6d9b3b8498ee3b92f495","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"876ef04c75c2751acfd355606fca3eced71dec65","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8","versionType":"git"},{"version":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278","status":"affected","lessThan":"db762fd96be225bd06161c9631160c755d891693","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/mips/net/bpf_jit_comp32.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/mips/net/bpf_jit_comp32.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1547e9f3a7d71971216e6dba30270cae13fe4e02"},{"url":"https://git.kernel.org/stable/c/beeae92e70e705e90a0d6d9b3b8498ee3b92f495"},{"url":"https://git.kernel.org/stable/c/6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0"},{"url":"https://git.kernel.org/stable/c/876ef04c75c2751acfd355606fca3eced71dec65"},{"url":"https://git.kernel.org/stable/c/1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8"},{"url":"https://git.kernel.org/stable/c/db762fd96be225bd06161c9631160c755d891693"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:21:57.711Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}