medium5.5
CVE-2022-49710
In the Linux kernel, the following vulnerability has been resolved: dm mirror log: round up region bitmap size to BITS_PER_LONG The code in dm-log rounds up bi…
Impact
In the Linux kernel, the following vulnerability has been resolved: dm mirror log: round up region bitmap size to BITS_PER_LONG The code in dm-log rounds up bitset_size to 32 bits. It then uses find_next_zero_bit_le on the allocated region. find_next_zero_bit_le accesses the bitmap using unsigned long pointers. So, on 64-bit architectures, it may access 4 bytes beyond the allocated size. Fix this bug by rounding up bitset_size to BITS_PER_LONG. This bug was found by running the lvm2 testsuite with kasan.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 2.6.18 before 5.4.200 from 5.5 before 5.10.124 from 5.11 before 5.15.49 from 5.16 before 5.18.6 Version 5.19 |
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9
- https://git.kernel.org/stable/c/85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0
- https://git.kernel.org/stable/c/9a02f3275acc628c0d956be771405ced79ac36df
- https://git.kernel.org/stable/c/ae460312875159285cef5bf3dc654593f404a1ef
- https://git.kernel.org/stable/c/ba751f0d25f07aa21ce9b85372a3792bf7969d13