7.8

CVE-2026-64377: linux Double Free

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2026-64377DEBIAN-CVE-2026-64377
Published 25-07-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-64377 is a high (CVSS 7.8) Double Free vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
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 19 · Related 19
OPENSUSE-SU-2026:11476-1OPENSUSE-SU-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24184-1SUSE-SU-2026:24197-1SUSE-SU-2026:24235-1

Timeline

  1. 25-07-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: qcom-cpufreq-hw: Fix possible double free qcom_cpufreq.data is allocated with devm_kzalloc() in probe() as an array of per-domain data. qcom_cpufreq_hw_cpu_init() stores a pointer to one element of this array in policy->driver_data. qcom_cpufreq_hw_cpu_exit() currently calls kfree() on policy->driver_data. This is not valid because the memory is devm-managed. For the first domain, this can free the devm-managed allocation while the devres entry is still active, leading to a possible double free when the platform device is later detached. For other domains, the pointer may refer to an element inside the array rather than the allocation base. Remove the kfree(data) call and let devres release qcom_cpufreq.data. This issue was found by a static analysis tool I am developing.

CVSS metrics

3 scores · 3 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

Affected systems

Ubuntu142 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.12.96-1 | < 7.1.4-1
  • linux-6.12< 6.12.100-1~deb12u1
Linux2 products
  • linux≥ 054a3ef683a176a509cc9b37f762029aae942495, < 0f012938f21302c08153589c1aca0283f8d6911d | ≥ 054a3ef683a176a509cc9b37f762029aae942495, < 28a03a3f6e6cda0b0da3b43761d175dec5d14d13 | ≥ 054a3ef683a176a509cc9b37f762029aae942495, < e904961332801c87355f5d11c65bb433e717c489 | ≥ 054a3ef683a176a509cc9b37f762029aae942495, < 9de568ef6cdfc7912d5ea8db02843c0e4ef0c75d | ≥ 054a3ef683a176a509cc9b37f762029aae942495, < bcb8889c4981fdde42d4fd2c29a77d510fe21da2 | 6.2
  • linux_kernel≥ 6.2, < 6.12.96 | ≥ 6.13, < 6.18.39 | ≥ 6.19, < 7.1.4

3 vendors · 146 products

References

22 links
Show all 22 references