Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 29121bd0b00ebb9524971a583fea4a2f7afe8041 before ae460312875159285cef5bf3dc654593f404a1ef; affected 29121bd0b00ebb9524971a583fea4a2f7afe8041 before ba751f0d25f07aa21ce9b85372a3792bf7969d13; affected 29121bd0b00ebb9524971a583fea4a2f7afe8041 before 0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9; affected 29121bd0b00ebb9524971a583fea4a2f7afe8041 before 9a02f3275acc628c0d956be771405ced79ac36df; affected 29121bd0b00ebb9524971a583fea4a2f7afe8041 before 85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0 |
| Linux / Linux | affected 2.6.18; unaffected 0 before 2.6.18; unaffected 5.4.200 through 5.4.*; unaffected 5.10.124 through 5.10.*; unaffected 5.15.49 through 5.15.*; unaffected 5.18.6 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ae460312875159285cef5bf3dc654593f404a1ef
- https://git.kernel.org/stable/c/ba751f0d25f07aa21ce9b85372a3792bf7969d13
- https://git.kernel.org/stable/c/0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9
- https://git.kernel.org/stable/c/9a02f3275acc628c0d956be771405ced79ac36df
- https://git.kernel.org/stable/c/85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0