Answer in brief
CVE-2026-89588 records a High severity (CVSS 8.4) vulnerability in ACPI: APEI: GHES: fix ARM section length accounting after header. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 7.0 | Not reported |
| Linux/Linuxgeneric | >=242c652849d979d0133c315a42d9acea0ff88390 <5ff385e9403e87ae33f65b8c38698d3b1e92cfde || >=136093ba4161e0080088abff48273f6830a47766 <452eb28e03015abec6d4bf6488ee567706ade4e1 || >=87880af2d24e62a84ed19943dbdd524f097172f2 <b48b613073c3d652cb1823c15d16f7067cf4cee4 || >=87880af2d24e62a84ed19943dbdd524f097172f2 <903308ea40adf0577d82eab69882faf8836326ce || db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd || >=6.12.75 <6.12.109 || >=6.18.16 <6.18.50 || >=6.19.6 <6.20 | 5ff385e9403e87ae33f65b8c38698d3b1e92cfde, 452eb28e03015abec6d4bf6488ee567706ade4e1, b48b613073c3d652cb1823c15d16f7067cf4cee4, 903308ea40adf0577d82eab69882faf8836326ce, 6.12.109, 6.18.50, 6.20 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.