CVE-2026-89584High· 7.0▾ TwilightA flaw was found in the Linux kernel's block layer. This vulnerability arises from insufficient validation of user-space data structures (vectors) against the device's Direct Memory Access (DMA) alignment requirements. A local attacker cou…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · 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
— → 7.8
none → high
7.8 → 4.7
high → medium
4.7 → 7.8
medium → high
7.8 → 4.7
high → medium
Last analysed / modified upstream
4.7 → 7
medium → high
A flaw was found in the Linux kernel's block layer. This vulnerability arises from insufficient validation of user-space data structures (vectors) against the device's Direct Memory Access (DMA) alignment requirements. A local attacker could exploit this by providing misaligned data, causing the system to reject the input with an error and potentially leading to a Denial of Service (DoS).
kernel: block: validate user space vectors during extraction — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.
Affected:
No fix planned:
Not affected:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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