Description
In the Linux kernel, the following vulnerability has been resolved:
pstore: ram_core: fix incorrect success return when vmap() fails
In persistent_ram_vmap(), vmap() may return NULL on failure.
If offset is non-zero, adding offset_in_page(start) causes the function to return a non-NULL pointer even though the mapping failed. persistent_ram_buffer_map() therefore incorrectly returns success.
Subsequent access to prz->buffer may dereference an invalid address and cause crashes.
Add proper NULL checking for vmap() failures.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 831b624df1b420c8f9281ed1307a8db23afb72df, < d47234840aeb4182ed3ee795c578b1dfa9cbd25b; >= 831b624df1b420c8f9281ed1307a8db23afb72df, < 49918dd52615097529811d21ec6074dd02ebe77c; >= 831b624df1b420c8f9281ed1307a8db23afb72df, < 8baa234181f632cabacf73e4834a910859e9fcc9; >= 831b624df1b420c8f9281ed1307a8db23afb72df, < 1da904e84de608907662ad8a51ba9c571d61e003; >= 831b624df1b420c8f9281ed1307a8db23afb72df, < 8d849adfbc3e98417fb541620568db1a759ef441; >= 831b624df1b420c8f9281ed1307a8db23afb72df, < 2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb; >= 831b624df1b420c8f9281ed1307a8db23afb72df, < 88d5b28f63c7aac1271784e3b800ed405d1cde75; >= 831b624df1b420c8f9281ed1307a8db23afb72df, < 05363abc7625cf18c96e67f50673cd07f11da5e9; 9095f19baae92afb978f8df77d19280fe291b337; 36a9916189b46b78dbf4fa542739b464444f0537; 1cd01dba1355e291f636555b1920625ed58c1623; 7026e2457c5b0c0e8a81e65a8209b8420a437b4d; 1e5b387747ba285a64348b9a96b246d0b9d52b03; d0028f48b33086cf6d8f87831a650866107b5785; >= 3.16.62, < 3.17; >= 3.18.123, < 3.19; >= 4.4.158, < 4.5; >= 4.9.129, < 4.10; >= 4.14.72, < 4.15; >= 4.18.10, < 4.19 |
| Linux | Linux | 4.19 |
References
- https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9Patch
- https://git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003Patch
- https://git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70ebPatch
- https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77cPatch
- https://git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75Patch
- https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9Patch
- https://git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441Patch
- https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25bPatch
Timeline
- Published
- May 6, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Analyzed