CVE-2026-89588High· 8.4▾ TwilightIn 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 remaini…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 46.2 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 5.1
— → 8.4
none → high
8.4 → 5.1
high → medium
5.1 → 8.4
medium → high
8.4 → 5.1
high → medium
5.1 → 5.5
Last analysed / modified upstream
5.5 → 8.4
medium → high
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.
Linux >= 242c652849d979d0133c315a42d9acea0ff88390 < 5ff385e9403e87ae33f65b8c38698d3b1e92cfdeLinux >= 136093ba4161e0080088abff48273f6830a47766 < 452eb28e03015abec6d4bf6488ee567706ade4e1Linux >= 87880af2d24e62a84ed19943dbdd524f097172f2 < b48b613073c3d652cb1823c15d16f7067cf4cee4Linux >= 87880af2d24e62a84ed19943dbdd524f097172f2 < 903308ea40adf0577d82eab69882faf8836326ceLinux db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bdLinux >= 6.12.75 < 6.12.109Linux >= 6.18.16 < 6.18.50Linux >= 6.19.6 < 6.20Linux 7.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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