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Vulnerability record · CVE-2026-53268 · published 25 June 2026

CVE-2026-53268: Linux kernel out-of-bounds read vulnerability

Linux · Linux Kernel

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.

8.2 CVSS 3.1 High EPSS 0.39% · top 69.9% CWE-125 · Out-of-bounds read
8.2CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
9References
8 Sep 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/0afc802160af0df61ed374fdb97fb34cfe5cdf2f Patch
https://git.kernel.org/stable/c/4cdda7f868f48e2f81579371584fdbdce37df2c8 Patch
https://git.kernel.org/stable/c/573810f61bcd6b6815e2ff53bbdd2b9c9d747176 Patch
https://git.kernel.org/stable/c/66eba0ffce3b7e11449946b4cbbef8ea36112f56 Patch
https://git.kernel.org/stable/c/7c34f91305292083253df6a9f6c8ede02d4ccaea Patch
https://git.kernel.org/stable/c/8a1d6e40dedfe1068aee094d851bd69e289c9fd6 Patch
https://git.kernel.org/stable/c/9e5da2379f968a3ea5a6e38921ab6201576466dc Patch
https://git.kernel.org/stable/c/ddddd8271359961e403d11c90c9ba9fc38914f7e Patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html

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Source: NIST National Vulnerability Database (record CVE-2026-53268), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.