CVE-2022-49044

Advisory lineage Upstream: 0 Downstream: 12
Analyzed
Published: 26 Feb 2025, 01:54
Last modified:11 May 2026, 18:51

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability -0.05%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Feb 2025, 01:54
Published
Vulnerability first disclosed
11 May 2026, 18:51
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 3%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    ≥ 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, < 6a95d91c0b315c965198f6ab7dec7c94129e17e0 | ≥ 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, < 7f84c937222944c03f4615ca4742df6bed0e5adf | ≥ 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, < cd02b2687d66f0a8e716384de4b9a0671331f1dc | ≥ 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, < 6b4bf97587ef6c1927a78934b700204920655123 | ≥ 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, < 4d485cf9b609709e45d5113e6e2b1b01254b2fe9 | ≥ 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, < 08c1af8f1c13bbf210f1760132f4df24d0ed46d6 | 4.12

  • linux•linux_kernel

    ≥ 4.12, < 4.19.240 | ≥ 4.20, < 5.4.190 | ≥ 5.5, < 5.10.112 | ≥ 5.11, < 5.15.35 | ≥ 5.16, < 5.17.4 | 5.18:rc1 | 5.18:rc2

References (6)