{"id":"CVE-2026-90358","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-90358","summary":"bpf, x86: Fix trampoline stack size for 128-bit arguments","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, x86: Fix trampoline stack size for 128-bit arguments\n\nbtf_distill_func_proto() accepts a function argument up to 16 bytes, so a\n128-bit scalar such as __int128 reaches the x86 trampoline with\narg_size == 16. But the current implementation assumes an __int128\nargument only needs one register, so the register save area is\nunder-allocated and save_args() overwrites adjacent stack slots.\n\nCompute the register count from arg_size for all arguments to fix it.","published":"2026-09-17T16:09:03.531Z","modified":"2026-09-19T03:47:26.020317584Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.110"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/40f3bfbbb222b92278f3797614b70f68d46824ac"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4aed2346fa9b88d458eeb8c01123f3c07585a675"},{"type":"WEB","url":"https://git.kernel.org/stable/c/814cba835ef648e0c5eb79505c96c0493b29eea6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6d7d7a253c550e74b0651897fe313c2f9b2301f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90358.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90358"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T03:47:26.020317584Z"}}