CVE-2026-93198
CVE CVE-2026-93198EUVD EUVD-2026-82306Published 2026-09-17T16:12:20.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: dm-pcache: validate the persisted dirty_tail chain at load The writeback worker follows the persisted dirty_tail chain, which is decoded from the cache device independently of the key_tail chain that cache_replay() walks and bounds. A crafted image, whose on-media fields are authenticated only by a crc32c with a fixed seed, can aim dirty_tail at a chain of last ksets that never terminates, so cache_writeback_fn() re-arms itself with no delay forever. Walk the dirty_tail chain once at load with the same hop cap cache_replay() uses and fail the table load with -EIO if it does not reach an end within n_segs hops.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.3-rc1; 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 <8195cf3f4a82ef49d9b0651c507ed0784caf23fb; patch: 0; patch: 7.2.6; patch: 6.18.52; 6.18; 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 <4822a030929e0e77aa380722dc42e3e4c9edd346; 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 <58d620ee9e01d4bdbceaf2ae1450d307a2a9d58b
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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