CVE-2026-98868dm-pcache: reject a kset that overruns its segment
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: dm-pcache: reject a kset that overruns its segment cache_replay(), the writeback worker and the GC worker read a kset of get_kset_onmedia_size() bytes and advance the position by it. A forged key_num makes that size exceed the segment's remaining space, so the advance walks past the segment and trips the cache_pos_advance() BUG_ON. Reject a kset whose on-media size exceeds cache_seg_remain() before use.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 builds before 01a700e9278da5706c865b9ca3ae70fdb7b4531d; from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before 96e2863b1f81ea61b8d8d5d5a45d3b4c018f8e10; from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before 7ac1f10f987a2ffae4aecf0e2ceca8f552b665cb | CNA record |
References
- https://git.kernel.org/stable/c/01a700e9278da5706c865b9ca3ae70fdb7b4531d
- https://git.kernel.org/stable/c/96e2863b1f81ea61b8d8d5d5a45d3b4c018f8e10
- https://git.kernel.org/stable/c/7ac1f10f987a2ffae4aecf0e2ceca8f552b665cb
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.