CVE-2022-49710
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2022-49710
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2022-49710.html
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2022:8267
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 5.18.14-1 |
| debian | bullseye | fixed | 5.10.127-1 |
| debian | forky | fixed | 5.18.14-1 |
| debian | sid | fixed | 5.18.14-1 |
| debian | trixie | fixed | 5.18.14-1 |
References
Verify integrity in audit chain (admin only). AS-IS.