Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 831b624df1b420c8f9281ed1307a8db23afb72df before d47234840aeb4182ed3ee795c578b1dfa9cbd25b; affected 831b624df1b420c8f9281ed1307a8db23afb72df before 49918dd52615097529811d21ec6074dd02ebe77c; affected 831b624df1b420c8f9281ed1307a8db23afb72df before 8baa234181f632cabacf73e4834a910859e9fcc9; affected 831b624df1b420c8f9281ed1307a8db23afb72df before 1da904e84de608907662ad8a51ba9c571d61e003; affected 831b624df1b420c8f9281ed1307a8db23afb72df before 8d849adfbc3e98417fb541620568db1a759ef441; affected 831b624df1b420c8f9281ed1307a8db23afb72df before 2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb; affected 831b624df1b420c8f9281ed1307a8db23afb72df before 88d5b28f63c7aac1271784e3b800ed405d1cde75; affected 831b624df1b420c8f9281ed1307a8db23afb72df before 05363abc7625cf18c96e67f50673cd07f11da5e9; affected 9095f19baae92afb978f8df77d19280fe291b337; affected 36a9916189b46b78dbf4fa542739b464444f0537; affected 1cd01dba1355e291f636555b1920625ed58c1623; affected 7026e2457c5b0c0e8a81e65a8209b8420a437b4d; affected 1e5b387747ba285a64348b9a96b246d0b9d52b03; affected d0028f48b33086cf6d8f87831a650866107b5785; affected 3.16.62 before 3.17; affected 3.18.123 before 3.19; affected 4.4.158 before 4.5; affected 4.9.129 before 4.10; affected 4.14.72 before 4.15; affected 4.18.10 before 4.19 |
| Linux / Linux | affected 4.19; unaffected 0 before 4.19; unaffected 5.10.252 through 5.10.*; unaffected 5.15.202 through 5.15.*; unaffected 6.1.165 through 6.1.*; unaffected 6.6.128 through 6.6.*; unaffected 6.12.75 through 6.12.*; unaffected 6.18.16 through 6.18.*; unaffected 6.19.6 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
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