CVE-2026-89576Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's device-mapper era (dm-era) component. When a snapshot operation fails, a block of metadata is allocated but not properly freed. This leads to a permanent leak of system resources with each failed atte…
▾ 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%
— → 4.4
none → medium
— → 4.4
none → medium
0.2% → 0.2%
— → 4.4
none → medium
Last analysed / modified upstream
4.4 → 5.5
A flaw was found in the Linux kernel's device-mapper era (dm-era) component. When a snapshot operation fails, a block of metadata is allocated but not properly freed. This leads to a permanent leak of system resources with each failed attempt. Over time, this resource exhaustion can result in a Denial of Service (DoS), causing the system to become unresponsive or crash.
kernel: dm-era: fix shadowed superblock leak on take-snap failure — rated Low by Red Hat. Released 2026-09-11, updated 2026-09-18.
Affected:
No fix planned:
Not affected:
Out of support scope
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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