{"id":"CVE-2026-92518","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-92518","summary":"riscv, bpf: Fix kernel stack corruption in tailcall with CFI","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv, bpf: Fix kernel stack corruption in tailcall with CFI\n\nWhen CONFIG_CFI_CLANG is enabled, prog->bpf_func already skips the kcfi\ninstruction during setup. Including it again in the tailcall jump offset\ncauses it to jump over an extra 4 bytes, skipping the stack pointer\nadjustment, which will result in kernel stack corruption.","published":"2026-09-17T16:10:26.136Z","modified":"2026-09-19T03:47:31.101596709Z","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":"6.18.52"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/34b1bb33a025787e05f966e74de18cd36276f801"},{"type":"WEB","url":"https://git.kernel.org/stable/c/52fb1756ea1d2759dfef2d86245be00b05dac3a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6e11a81da3420fd37f1518d4f238c4d5784086e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92518.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92518"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T03:47:31.101596709Z"}}