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CVE-2026-89588

ACPI: APEI: GHES: fix ARM section length accounting after header PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: ACPI: APEI: GHES: fix ARM section length accounting after header In ghes_handle_arm_hw_error(), after skipping the cper_sec_proc_arm header with (err + 1), the remaining length was reduced by sizeof(err) (pointer size) instead of sizeof(*err) (structure size). That overestimates the bytes left for cper_arm_err_info records and can let the parser read past the CPER section when err_info_num is large enough relative to error_data_length. Use sizeof(*err) so the length accounting matches the pointer advance and the earlier sizeof(*err) size check.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 242c652849d979d0133c315a42d9acea0ff88390 before 5ff385e9403e87ae33f65b8c38698d3b1e92cfde; affected 136093ba4161e0080088abff48273f6830a47766 before 452eb28e03015abec6d4bf6488ee567706ade4e1; affected 87880af2d24e62a84ed19943dbdd524f097172f2 before b48b613073c3d652cb1823c15d16f7067cf4cee4; affected 87880af2d24e62a84ed19943dbdd524f097172f2 before 903308ea40adf0577d82eab69882faf8836326ce; affected db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd; affected 6.12.75 before 6.12.109; affected 6.18.16 before 6.18.50; affected 6.19.6 before 6.20
Linux / Linuxaffected 7.0; unaffected 0 before 7.0; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References