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.
Product status
831b624df1b420c8f9281ed1307a8db23afb72df (git) before d47234840aeb4182ed3ee795c578b1dfa9cbd25b
831b624df1b420c8f9281ed1307a8db23afb72df (git) before 49918dd52615097529811d21ec6074dd02ebe77c
831b624df1b420c8f9281ed1307a8db23afb72df (git) before 8baa234181f632cabacf73e4834a910859e9fcc9
831b624df1b420c8f9281ed1307a8db23afb72df (git) before 1da904e84de608907662ad8a51ba9c571d61e003
831b624df1b420c8f9281ed1307a8db23afb72df (git) before 8d849adfbc3e98417fb541620568db1a759ef441
831b624df1b420c8f9281ed1307a8db23afb72df (git) before 2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb
831b624df1b420c8f9281ed1307a8db23afb72df (git) before 88d5b28f63c7aac1271784e3b800ed405d1cde75
831b624df1b420c8f9281ed1307a8db23afb72df (git) before 05363abc7625cf18c96e67f50673cd07f11da5e9
9095f19baae92afb978f8df77d19280fe291b337 (git)
36a9916189b46b78dbf4fa542739b464444f0537 (git)
1cd01dba1355e291f636555b1920625ed58c1623 (git)
7026e2457c5b0c0e8a81e65a8209b8420a437b4d (git)
1e5b387747ba285a64348b9a96b246d0b9d52b03 (git)
d0028f48b33086cf6d8f87831a650866107b5785 (git)
4.19
Any version before 4.19
5.10.252 (semver)
5.15.202 (semver)
6.1.165 (semver)
6.6.128 (semver)
6.12.75 (semver)
6.18.16 (semver)
6.19.6 (semver)
7.0 (original_commit_for_fix)
References
git.kernel.org/...c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b
git.kernel.org/...c/49918dd52615097529811d21ec6074dd02ebe77c
git.kernel.org/...c/8baa234181f632cabacf73e4834a910859e9fcc9
git.kernel.org/...c/1da904e84de608907662ad8a51ba9c571d61e003
git.kernel.org/...c/8d849adfbc3e98417fb541620568db1a759ef441
git.kernel.org/...c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb
git.kernel.org/...c/88d5b28f63c7aac1271784e3b800ed405d1cde75
git.kernel.org/...c/05363abc7625cf18c96e67f50673cd07f11da5e9