{"id":"CVE-2026-90177","published":"2026-09-17T17:17:11.623","lastModified":"2026-09-18T18:17:45.693","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Check pointer type for all atomic RMW paths\n\nAtomic RMW verification records an instruction pointer type only when the\ncurrent destination is PTR_TO_ARENA. A second path can therefore reach the\nsame instruction with an ordinary pointer without comparing it against the\nsaved arena type.\n\nThe post-verification fixup uses the saved type to rewrite the instruction\nto BPF_PROBE_ATOMIC for every path. Record the actual destination type for\nall atomic RMW paths so the existing mismatch check rejects incompatible\nuses of one instruction.","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/4bc49ae344d65cfcef738f281ac575cf73ca2fc5","tags":[]},{"url":"https://git.kernel.org/stable/c/eb287c6e81dedef92da01eb947f380d0aae513c3","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}