5.5

CVE-2026-53222: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-53222DEBIAN-CVE-2026-53222CGA-285p-2j9m-fxjv
Published 25-06-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-53222 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 12
USN-8726-1USN-8726-2USN-8726-3USN-8726-4USN-8727-1USN-8728-1

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: fix resource freeing order Commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to disable events") added a call to ptp_disable_all_events() which changes the configuration of pins if they support EXTTS events. In ptp_ocp_detach() pins resources are freed before ptp_clock_unregister() and it leads to use-after-free during driver removal. Fix it by changing the order of free/unregister calls. To avoid irq handler running on the other core while ptp device unregistering, call synchronize_irq() after HW is configured to stop producing irqs and no irqs are in-flight.

CVSS metrics

3 scores · 3 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

-0.03 pp

From 0.14% on 19-09-2026

19-09-202619-10-2026
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

Ubuntu110 products
  • linux< 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard20 products
  • linux-aws-6.18All versions (No fix recorded)
  • linux-azure-6.18All versions (No fix recorded)
  • linux-desktop-6.18All versions (No fix recorded)
  • linux-desktop-6.18-bootcAll versions (No fix recorded)
  • linux-desktop-6.18-bootc-boot-installedAll versions (No fix recorded)
Linux2 products
  • linux≥ a60fc3294a377204664b5484e4a487fa124155da, < daacc9d1430b63f6bee6e5646def5d6414d35c4e | ≥ a60fc3294a377204664b5484e4a487fa124155da, < aa03698bb28d3be5ee180adb185395054b342b04 | ≥ a60fc3294a377204664b5484e4a487fa124155da, < 627366c51145a07f675b1800fb5ea2ec960bd900 | 6.18
  • linux_kernel≥ 6.18, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6 | 7.1:rc7
Debian1 product
  • linux< 7.0.13-1

4 vendors · 133 products

References

18 links
Show all 18 references