UNKNOWN NVD
CVE-2026-72104
In the Linux kernel, the following vulnerability has been resolved: dm-pcache: reject option groups without values The pcache target parses optional arguments
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.
References
- https://git.kernel.org/stable/c/0cbe13fe540330d31e5273bbf8cbd66bc7c9cb5a
- https://git.kernel.org/stable/c/1247615aadb74c89c1b2f01a6de7df9dab92ecb3
- https://git.kernel.org/stable/c/d9c631e3fbd44246a2be781d26cfacbb9b8ec127
This unknown severity vulnerability was published on 2026-08-15 via NVD.
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