CVE-2022-49044
dm integrity: fix memory corruption when tag_size is less than digest size
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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 "tag_size" parameter is less than the actual digest size. In this situation, a part of the digest beyond tag_size is ignored. In this case, dm-integrity would write beyond the end of the ic->recalc_tags array and corrupt memory. The corruption happened in integrity_recalc->integrity_sector_checksum->crypto_shash_final. 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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.28% · top 79% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected a3fcf7253139609bf9ff901fbf955fba047e75dd – < 6a95d91c0b315c965198f6ab7dec7c94129e17e0
- affected a3fcf7253139609bf9ff901fbf955fba047e75dd – < 7f84c937222944c03f4615ca4742df6bed0e5adf
- affected a3fcf7253139609bf9ff901fbf955fba047e75dd – < cd02b2687d66f0a8e716384de4b9a0671331f1dc
- affected a3fcf7253139609bf9ff901fbf955fba047e75dd – < 6b4bf97587ef6c1927a78934b700204920655123
- affected a3fcf7253139609bf9ff901fbf955fba047e75dd – < 4d485cf9b609709e45d5113e6e2b1b01254b2fe9
- affected a3fcf7253139609bf9ff901fbf955fba047e75dd – < 08c1af8f1c13bbf210f1760132f4df24d0ed46d6
- affected 4.19
- unaffected < 4.19
- unaffected 4.19.240 – ≤ 4.19.*
- unaffected 5.4.190 – ≤ 5.4.*
- unaffected 5.10.112 – ≤ 5.10.*
- unaffected 5.15.35 – ≤ 5.15.*
- unaffected 5.17.4 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (6)
- https://git.kernel.org/stable/c/6a95d91c0b315c965198f6ab7dec7c94129e17e0 (opens in a new tab)
- https://git.kernel.org/stable/c/7f84c937222944c03f4615ca4742df6bed0e5adf (opens in a new tab)
- https://git.kernel.org/stable/c/cd02b2687d66f0a8e716384de4b9a0671331f1dc (opens in a new tab)
- https://git.kernel.org/stable/c/6b4bf97587ef6c1927a78934b700204920655123 (opens in a new tab)
- https://git.kernel.org/stable/c/4d485cf9b609709e45d5113e6e2b1b01254b2fe9 (opens in a new tab)
- https://git.kernel.org/stable/c/08c1af8f1c13bbf210f1760132f4df24d0ed46d6 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49044)Record last updated .