CVE-2026-89459Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's s390/percpu component. This vulnerability arises when the kernel is compiled with older versions of GNU as (prior to binutils 2.39). A parsing error prevents a crucial instruction from being correctly…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · 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 CSAF
0.2%
— → 4.1
none → medium
— → 7
none → high
7 → 4.1
high → medium
4.1 → 7
medium → high
7 → 4.1
high → medium
Last analysed / modified upstream
4.1 → 5.5
A flaw was found in the Linux kernel's s390/percpu component. This vulnerability arises when the kernel is compiled with older versions of GNU as (prior to binutils 2.39). A parsing error prevents a crucial instruction from being correctly processed, which can lead to issues with system resource management after a process migrates between CPUs. This can result in system instability and potentially a Denial of Service (DoS).
kernel: s390/percpu: Fix MVIY_PERCPU() with older binutils — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-15.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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