7.8

CVE-2026-64221: linux Use After Free

CVSS: 7.8v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-64221DEBIAN-CVE-2026-64221
Published 24-07-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-64221 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
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 36 · Related 36
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1SUSE-SU-2026:23221-1

Timeline

  1. 24-07-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: spi: ti-qspi: fix use-after-free after DMA setup failure The driver falls back to PIO mode if DMA setup fails during probe. Make sure to clear the DMA channel pointer also if buffer allocation fails to avoid passing a pointer to the released channel to the DMA engine (or trying to free the channel a second time on late probe errors or driver unbind). This issue was flagged by Sashiko when reviewing a devres allocation conversion patch.

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 19-09-2026

19-09-202619-10-2026
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

Affected systems

Ubuntu166 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-139.139 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1064.67 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83, < 9c6f306a8140962c7284197db54b96fdb5f468d6 | ≥ c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83, < 3bbbe7ae3fdada0df4157c1ffe989f92dfa8dcd6 | ≥ c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83, < d6f422b122922d1abee907d673bcc990e5f3672d | ≥ c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83, < f2dc841d7dc9063fe9b47ced869b1271e55052ae | ≥ c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83, < 1cd927002120678bd5d23c760246639caa53040e | ≥ c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83, < d7a076fb596c7b408ed6df74793a597990a6d860 | ≥ c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83, < 178b9b570c0f75fa7e691490520328b20d19138e | ≥ c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83, < ea6ec3343e05f7937a53eb6d7617b3abdb4abc19 | 4.12
  • linux_kernel≥ 4.12, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.142 | ≥ 6.7, < 6.12.92 | ≥ 6.13, < 6.18.34 | ≥ 6.19, < 7.0.11 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1

3 vendors · 169 products

References

36 links
Show all 36 references