CVE-2026-72104dm-pcache: reject option groups without values
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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 option groups without values The pcache target parses optional arguments as name/value pairs. A table that advertises one optional argument and supplies only a recognized option name, for example "cache_mode", reaches parse_cache_opts() with argc == 1. The parser consumes the name, decrements argc to zero, then calls dm_shift_arg() again for the value. dm_shift_arg() returns NULL when no arguments remain, and the following strcmp() dereferences that NULL pointer. Check that each recognized option has a value before consuming it. This keeps valid "cache_mode writeback" and "data_crc true/false" tables unchanged while making malformed tables fail during target construction with a precise missing-value error.
- 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
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before 1247615aadb74c89c1b2f01a6de7df9dab92ecb3; 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 builds before 0cbe13fe540330d31e5273bbf8cbd66bc7c9cb5a; from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before d9c631e3fbd44246a2be781d26cfacbb9b8ec127 | CNA record |
References
- https://git.kernel.org/stable/c/1247615aadb74c89c1b2f01a6de7df9dab92ecb3
- https://git.kernel.org/stable/c/0cbe13fe540330d31e5273bbf8cbd66bc7c9cb5a
- https://git.kernel.org/stable/c/d9c631e3fbd44246a2be781d26cfacbb9b8ec127
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.