8.8

CVE-2026-74443: linux

CVSS: 8.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-74443DEBIAN-CVE-2026-74443
Published 15-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-74443 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.3% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 17 · Related 17
SUSE-SU-2026:24181-1SUSE-SU-2026:24182-1SUSE-SU-2026:4640-1SUSE-SU-2026:4660-1SUSE-SU-2026:4665-1SUSE-SU-2026:4666-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: bound DMA command body size against suffix pointer vmw_cmd_dma() locates the DMA suffix at (unsigned long) &cmd->body + header->size - sizeof(*suffix) without checking that header->size is large enough to contain both cmd->body and the suffix. An undersized header makes the suffix pointer underflow back into the previous command in the bounce buffer. The verifier later writes suffix->maximumOffset, clobbering verified fields of an already-relocated earlier command -- a TOCTOU on the device-visible command stream that lets one command rewrite another's GMR id, surface id, or other authenticated fields. Reject the command if the body is too small for the suffix to fit.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.8-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ 4e4ddd47774313accc86b233d6ca2c6a9037a671, < eb20f418933bea53375843b27b4022c1810be63b | ≥ 4e4ddd47774313accc86b233d6ca2c6a9037a671, < fcd1e56e7816b31a1050ccc67df722b20f6bb15d | ≥ 4e4ddd47774313accc86b233d6ca2c6a9037a671, < a4a37080a5ac777b59306cfcdf854cc05d7604d4 | ≥ 4e4ddd47774313accc86b233d6ca2c6a9037a671, < 036e16ada95389bdc30f41068af04c1d0872fad0 | ≥ 4e4ddd47774313accc86b233d6ca2c6a9037a671, < d5d7ada4e1296b00d89fe82b2ca850cc7809d6f7 | ≥ 4e4ddd47774313accc86b233d6ca2c6a9037a671, < 7e40e6120fb232a10b543ffd994e5c6d8f3a2cc6 | ≥ 4e4ddd47774313accc86b233d6ca2c6a9037a671, < 9759da60e38d7b9db44dc92713e4e0391883d221 | ≥ 4e4ddd47774313accc86b233d6ca2c6a9037a671, < f4f1db96bfd68b81053693ba53405b6f510ac16c | 2.6.33

3 vendors · 172 products

References

20 links
Show all 20 references