CVE-2026-89575Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's device mapper (dm-raid1) component. This vulnerability occurs in the `build_constructor_string()` function, where insufficient space is reserved for a NUL-terminator when formatting a string with `spr…
▾ 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%
— → 4.7
none → medium
— → 4.7
none → medium
— → 4.7
none → medium
4.7 → 7
medium → high
0.2% → 0.2%
Last analysed / modified upstream
7 → 5.5
high → medium
A flaw was found in the Linux kernel's device mapper (dm-raid1) component. This vulnerability occurs in the build_constructor_string() function, where insufficient space is reserved for a NUL-terminator when formatting a string with sprintf(). This oversight can lead to a buffer overflow, potentially allowing an attacker to cause a denial of service or execute arbitrary code.
kernel: dm raid1: reserve space for NUL-terminator in build_constructor_string() — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-10-24.
Affected:
No fix planned:
Out of support scope
Workarounds / mitigations:
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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