7.8

CVE-2026-64023: linux Use After Free

CVSS: 7.8v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-64023DEBIAN-CVE-2026-64023
Published 19-07-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-64023 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.9% 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
0.12%
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 9 · Related 9
USN-8593-1USN-8603-1USN-8618-1USN-8663-1USN-8664-1USN-8728-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: gpio: aggregator: fix a potential use-after-free On error we free aggr->lookups->dev_id before removing the entry from the lookup table. If a concurrent thread calls gpiod_find() before we remove the entry, it could iterate over the list and call gpiod_match_lookup_table() which unconditionally dereferences dev_id when calling strcmp(). Reverse the order of cleanup.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.12%

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

Ubuntu141 products
  • linuxAll versions (No fix recorded) | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 86f162e73d2d81ef6d819c06a3b6c2fda77a79b8, < ea28b286649b70618e9dd3e895812417a7712a11 | ≥ 86f162e73d2d81ef6d819c06a3b6c2fda77a79b8, < 7ac4183a41ba048af89eddd82fe8be64619d0871 | ≥ 86f162e73d2d81ef6d819c06a3b6c2fda77a79b8, < 30c073cab97afb31901f94de9605177b6b84367e | 6.16
  • linux_kernel≥ 6.16, < 6.18.34 | ≥ 6.19, < 7.0.11 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4
Debian1 product
  • linux< 7.0.12-1

3 vendors · 144 products

References

16 links
Show all 16 references