CVE-2026-43124
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 831b624df1b420c8f9281ed1307a8db23afb72df < d47234840aeb4182ed3ee795c578b1dfa9cbd25b | affected |
| Linux | Linux | 831b624df1b420c8f9281ed1307a8db23afb72df < 49918dd52615097529811d21ec6074dd02ebe77c | affected |
| Linux | Linux | 831b624df1b420c8f9281ed1307a8db23afb72df < 8baa234181f632cabacf73e4834a910859e9fcc9 | affected |
| Linux | Linux | 831b624df1b420c8f9281ed1307a8db23afb72df < 1da904e84de608907662ad8a51ba9c571d61e003 | affected |
| Linux | Linux | 831b624df1b420c8f9281ed1307a8db23afb72df < 8d849adfbc3e98417fb541620568db1a759ef441 | affected |
| Linux | Linux | 831b624df1b420c8f9281ed1307a8db23afb72df < 2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb | affected |
| Linux | Linux | 831b624df1b420c8f9281ed1307a8db23afb72df < 88d5b28f63c7aac1271784e3b800ed405d1cde75 | affected |
| Linux | Linux | 831b624df1b420c8f9281ed1307a8db23afb72df < 05363abc7625cf18c96e67f50673cd07f11da5e9 | affected |
| Linux | Linux | 9095f19baae92afb978f8df77d19280fe291b337 | affected |
| Linux | Linux | 36a9916189b46b78dbf4fa542739b464444f0537 | affected |
| Linux | Linux | 1cd01dba1355e291f636555b1920625ed58c1623 | affected |
| Linux | Linux | 7026e2457c5b0c0e8a81e65a8209b8420a437b4d | affected |
| Linux | Linux | 1e5b387747ba285a64348b9a96b246d0b9d52b03 | affected |
| Linux | Linux | d0028f48b33086cf6d8f87831a650866107b5785 | affected |
| Linux | Linux | 3.16.62 < 3.17 | affected |
| Linux | Linux | 3.18.123 < 3.19 | affected |
| Linux | Linux | 4.4.158 < 4.5 | affected |
| Linux | Linux | 4.9.129 < 4.10 | affected |
| Linux | Linux | 4.14.72 < 4.15 | affected |
| Linux | Linux | 4.18.10 < 4.19 | affected |
| Linux | Linux | 4.19 | affected |
| Linux | Linux | 0 < 4.19 | unaffected |
| Linux | Linux | 5.10.252 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.202 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.165 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.128 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.75 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.16 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.6 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b
- https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77c
- https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9
- https://git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003
- https://git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441
- https://git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb
- https://git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75
- https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9
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