CVE-2026-89588

CVE CVE-2026-89588EUVD EUVD-2026-76500Published 2026-09-11T19:44:52.000ZLast changed 2026-09-13T06:31:24.000ZCVSS 8.4

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 87880af2d24e62a84ed19943dbdd524f097172f2 <903308ea40adf0577d82eab69882faf8836326ce; patch: 6.18.50; 242c652849d979d0133c315a42d9acea0ff88390 <5ff385e9403e87ae33f65b8c38698d3b1e92cfde; 136093ba4161e0080088abff48273f6830a47766 <452eb28e03015abec6d4bf6488ee567706ade4e1; patch: 7.3-rc1; 87880af2d24e62a84ed19943dbdd524f097172f2 <b48b613073c3d652cb1823c15d16f7067cf4cee4; patch: 7.2.4; 6.18.16 <6.18.50; patch: 6.12.109; db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd; 6.12.75 <6.12.109; 7.0; 6.19.6 <6.20; patch: 0

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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