CVE-2022-49710
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49710
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49710.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49710
- Downstream
- Related
- Published
- 2025-02-26T07:01:46Z
- Modified
- 2025-08-09T20:01:25Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
dm mirror log: round up region bitmap size to BITSPERLONG
The code in dm-log rounds up bitsetsize to 32 bits. It then uses findnextzerobitle on the allocated region. findnextzerobit_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 bitsetsize to BITSPER_LONG.
This bug was found by running the lvm2 testsuite with kasan.
- References
-
- 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