8.2

CVE-2026-53268: linux Out-of-bounds Read

CVSS: 8.2v3.1HighModified
AliasesUBUNTU-CVE-2026-53268DEBIAN-CVE-2026-53268CGA-82hj-mhm2-hj75
Published 25-06-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-53268 is a high (CVSS 8.2) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.4% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (CVE.org)
EPSS score
0.40%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 38
MGASA-2026-0312OPENSUSE-SU-2026:21555-1RHSA-2026:59723RHSA-2026:68531RHSA-2026:68532SUSE-SU-2026:23066-1

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: netfilter: conntrack_irc: fix possible out-of-bounds read When parsing fails after we've matched the command string we should bail out instead of trying to match a different command. This helper should be deprecated, given prevalence of TLS I doubt it has any relevance in 2026.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

+0.01 pp

From 0.39% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.40%

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

Ubuntu168 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-146.146 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 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)
Chainguard6 products
  • linux-azure-6.18< 6.18.38-r0
  • linux-gcp-6.18< 6.18.38-r0
  • linux-gcp-6.18-bootc-boot-installed< 6.18.38-r0
  • linux-qemu-6.18< 6.18.38-r0
  • linux-qemu-6.18-bootc-boot-installed< 6.18.38-r0
Linux2 products
  • linux≥ 869f37d8e48f3911eb70f38a994feaa8f8380008, < 4cdda7f868f48e2f81579371584fdbdce37df2c8 | ≥ 869f37d8e48f3911eb70f38a994feaa8f8380008, < 8a1d6e40dedfe1068aee094d851bd69e289c9fd6 | ≥ 869f37d8e48f3911eb70f38a994feaa8f8380008, < 0afc802160af0df61ed374fdb97fb34cfe5cdf2f | ≥ 869f37d8e48f3911eb70f38a994feaa8f8380008, < 7c34f91305292083253df6a9f6c8ede02d4ccaea | ≥ 869f37d8e48f3911eb70f38a994feaa8f8380008, < ddddd8271359961e403d11c90c9ba9fc38914f7e | ≥ 869f37d8e48f3911eb70f38a994feaa8f8380008, < 9e5da2379f968a3ea5a6e38921ab6201576466dc | ≥ 869f37d8e48f3911eb70f38a994feaa8f8380008, < 573810f61bcd6b6815e2ff53bbdd2b9c9d747176 | ≥ 869f37d8e48f3911eb70f38a994feaa8f8380008, < 66eba0ffce3b7e11449946b4cbbef8ea36112f56 | 2.6.20
  • linux_kernel≥ 2.6.20, < 5.10.259 | ≥ 5.11, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.94 | ≥ 6.13, < 6.18.36 | ≥ 6.19, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.13-1

4 vendors · 177 products

References

42 links
Show all 42 references