CVE-2026-89588
Description
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.
How to fix
- Linux Linux5ff385e9403e87ae33f65b8c38698d3b1e92cfde, 452eb28e03015abec6d4bf6488ee567706ade4e1, b48b613073c3d652cb1823c15d16f7067cf4cee4, 903308ea40adf0577d82eab69882faf8836326ce, 6.12.109, 6.18.50, 6.20 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 242c652849d979d0133c315a42d9acea0ff88390 ≤ v < 5ff385e9403e87ae33f65b8c38698d3b1e92cfde, 136093ba4161e0080088abff48273f6830a47766 ≤ v < 452eb28e03015abec6d4bf6488ee567706ade4e1, 87880af2d24e62a84ed19943dbdd524f097172f2 ≤ v < b48b613073c3d652cb1823c15d16f7067cf4cee4, 87880af2d24e62a84ed19943dbdd524f097172f2 ≤ v < 903308ea40adf0577d82eab69882faf8836326ce, db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd, 6.12.75 ≤ v < 6.12.109, 6.18.16 ≤ v < 6.18.50, 6.19.6 ≤ v < 6.20, 7.0 | 5ff385e9403e87ae33f65b8c38698d3b1e92cfde, 452eb28e03015abec6d4bf6488ee567706ade4e1, b48b613073c3d652cb1823c15d16f7067cf4cee4, 903308ea40adf0577d82eab69882faf8836326ce, 6.12.109, 6.18.50, 6.20 |
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