8.8

CVE-2026-53232: linux Use After Free

CVSS: 8.8v3.1HighUndergoing analysis
AliasesUBUNTU-CVE-2026-53232DEBIAN-CVE-2026-53232CGA-3j8v-wc9r-v86p
Published 25-06-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-53232 is a high (CVSS 8.8) Use After Free vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.8% 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
0.25%
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 18 · Related 19
USN-8726-1USN-8726-2USN-8726-3USN-8726-4USN-8727-1USN-8728-1

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: phy: clean the sfp upstream if phy probing fails Sashiko reported that we don't call sfp_bus_del_upstream() in the probe failure path, so let's add it, otherwise the sfp-bus is left with a dangling 'upstream' field, that may be used later on during SFP events. This issue existed before the generic phylib sfp support, back when drivers were calling phy_sfp_probe themselves.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.25%

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

Ubuntu156 products
  • linuxAll versions (No fix recorded) | < 6.8.0-146.146 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1066.69 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard25 products
  • linux-aws-6.12All versions (No fix recorded)
  • linux-aws-6.18< 6.18.36-r0
  • linux-azure-6.12All versions (No fix recorded)
  • linux-azure-6.18< 6.18.36-r0
  • linux-desktop-6.18All versions (No fix recorded)
Linux2 products
  • linux≥ 298e54fa810e027f1b0800d789eb862592721f08, < 12fb84dc4dc8eb47ebe2b27f7de6255a4a205e1b | ≥ 298e54fa810e027f1b0800d789eb862592721f08, < 9326b654f90a09eadeb796c82801a5609d57f0c8 | ≥ 298e54fa810e027f1b0800d789eb862592721f08, < 3a254779c169954fe23328a1db51f67be374f913 | ≥ 298e54fa810e027f1b0800d789eb862592721f08, < 0b27701ce93161d7bbf4b25fa20ca59963b0e20c | ≥ 298e54fa810e027f1b0800d789eb862592721f08, < 48774e87bbaa0056819d4b52301e4692e50e3252 | 5.5
  • linux_kernel≥ 5.5, < 7.1 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6 | 7.1:rc7
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.94-1 | < 7.0.13-1

4 vendors · 184 products

References

30 links
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