CVE-2022-49044

Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49044
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49044.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49044
Downstream
Related
Published
2025-02-26T07:00:41Z
Modified
2025-09-23T18:24:48Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

dm integrity: fix memory corruption when tag_size is less than digest size

It is possible to set up dm-integrity in such a way that the "tagsize" parameter is less than the actual digest size. In this situation, a part of the digest beyond tagsize is ignored.

In this case, dm-integrity would write beyond the end of the ic->recalctags array and corrupt memory. The corruption happened in integrityrecalc->integritysectorchecksum->cryptoshashfinal.

Fix this corruption by increasing the tags array so that it has enough padding at the end to accomodate the loop in integrity_recalc() being able to write a full digest size for the last member of the tags array.

References

Affected packages