CVE-2026-43124
pstore: ram_core: fix incorrect success return when vmap() fails
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
2th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 6, 2026 |
| Last Updated | May 23, 2026 |
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Affected 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
git.kernel.org: https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b git.kernel.org: https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77c git.kernel.org: https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9 git.kernel.org: https://git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003 git.kernel.org: https://git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441 git.kernel.org: https://git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb git.kernel.org: https://git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75 git.kernel.org: https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9