{"id":"CVE-2026-98572","summary":"bpf: Fix immediate JMP JEQ/JNE on MIPS32","details":"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.","modified":"2026-10-20T02:31:00.336777746Z","published":"2026-10-18T15:18:38.105Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98572.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1547e9f3a7d71971216e6dba30270cae13fe4e02"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/876ef04c75c2751acfd355606fca3eced71dec65"},{"type":"WEB","url":"https://git.kernel.org/stable/c/beeae92e70e705e90a0d6d9b3b8498ee3b92f495"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db762fd96be225bd06161c9631160c755d891693"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98572.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98572"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"eb63cfcd2ee8ec3805f6881f43341f589c3d2278"},{"fixed":"1547e9f3a7d71971216e6dba30270cae13fe4e02"},{"fixed":"beeae92e70e705e90a0d6d9b3b8498ee3b92f495"},{"fixed":"6f939529ed6c580e9b6c5daa20be67fa0b3d4cf0"},{"fixed":"876ef04c75c2751acfd355606fca3eced71dec65"},{"fixed":"1bd91670966a7142ac94f2cebe2b5ae6bf5cb0c8"},{"fixed":"db762fd96be225bd06161c9631160c755d891693"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98572.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.55"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98572.json"}}],"schema_version":"1.9.0"}