7.8

CVE-2026-43044: crypto: caam - fix DMA corruption on long hmac keys

Analyzed
AliasesUBUNTU-CVE-2026-43044DEBIAN-CVE-2026-43044
Published 01-05-2026Last modified 05-08-2026

Vulnerability summary

CVE-2026-43044 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.12%
0%100%
Low · -0.06 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 24 · Related 22
MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21555-1SUSE-SU-2026:2195-1SUSE-SU-2026:2238-1SUSE-SU-2026:23066-1

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: caam - fix DMA corruption on long hmac keys When a key longer than block size is supplied, it is copied and then hashed into the real key. The memory allocated for the copy needs to be rounded to DMA cache alignment, as otherwise the hashed key may corrupt neighbouring memory. The rounding was performed, but never actually used for the allocation. Fix this by replacing kmemdup with kmalloc for a larger buffer, followed by memcpy.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Decrease -0.06 pp

From 0.18% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu130 products
  • linux< 6.8.0-136.136 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1061.64 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 199354d7fb6eaa2cc5bb650af0bca624baffee35, < a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135a | ≥ 199354d7fb6eaa2cc5bb650af0bca624baffee35, < c0c133e0225d87aad326bb90bbce9bdd6fde3cbb | ≥ 199354d7fb6eaa2cc5bb650af0bca624baffee35, < 68feed135a0c7243a9275ae7e6a18260f755f52b | ≥ 199354d7fb6eaa2cc5bb650af0bca624baffee35, < f2af8be110bde26b3e3354efdfdda97f426306a4 | ≥ 199354d7fb6eaa2cc5bb650af0bca624baffee35, < 5ddfdcbe10dc5f97afc4e46ca22be2be717e8caf | 6.3
  • linux_kernel≥ 6.3, < 6.6.134 | ≥ 6.7, < 6.12.81 | ≥ 6.13, < 6.18.22 | ≥ 6.19, < 6.19.12 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6
Debian1 product
  • linux< 6.12.85-1 | < 6.19.12-1

3 vendors · 133 products

References

23 links
Show all 23 references