{"id":"CVE-2026-89588","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-89588","summary":"ACPI: APEI: GHES: fix ARM section length accounting after header","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: APEI: GHES: fix ARM section length accounting after header\n\nIn ghes_handle_arm_hw_error(), after skipping the cper_sec_proc_arm\nheader with (err + 1), the remaining length was reduced by sizeof(err)\n(pointer size) instead of sizeof(*err) (structure size).\n\nThat overestimates the bytes left for cper_arm_err_info records and can\nlet the parser read past the CPER section when err_info_num is large\nenough relative to error_data_length.\n\nUse sizeof(*err) so the length accounting matches the pointer advance\nand the earlier sizeof(*err) size check.","published":"2026-09-11T19:44:52.842Z","modified":"2026-09-14T03:46:16.267245772Z","cvss":{"score":8.4,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.109"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/452eb28e03015abec6d4bf6488ee567706ade4e1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5ff385e9403e87ae33f65b8c38698d3b1e92cfde"},{"type":"WEB","url":"https://git.kernel.org/stable/c/903308ea40adf0577d82eab69882faf8836326ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b48b613073c3d652cb1823c15d16f7067cf4cee4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89588.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89588"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T03:46:16.267245772Z"}}