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CVE Vulnerability Details :

CVE-2026-53268

PUBLISHED

More Info Official Page

Assigner-Linux

Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published At-25 Jun, 2026 | 08:39

Updated At-28 Jun, 2026 | 06:41

▼CVE Numbering Authority (CNA)

netfilter: conntrack_irc: fix possible out-of-bounds read

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.

Affected Products

Vendor

Linux Kernel Organization, Inc

Product

Linux

Repo

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Program Files

net/netfilter/nf_conntrack_irc.c

Default Status

unaffected

Versions

Affected

From 869f37d8e48f3911eb70f38a994feaa8f8380008 before 4cdda7f868f48e2f81579371584fdbdce37df2c8 (git)
From 869f37d8e48f3911eb70f38a994feaa8f8380008 before 8a1d6e40dedfe1068aee094d851bd69e289c9fd6 (git)
From 869f37d8e48f3911eb70f38a994feaa8f8380008 before 0afc802160af0df61ed374fdb97fb34cfe5cdf2f (git)
From 869f37d8e48f3911eb70f38a994feaa8f8380008 before 7c34f91305292083253df6a9f6c8ede02d4ccaea (git)
From 869f37d8e48f3911eb70f38a994feaa8f8380008 before ddddd8271359961e403d11c90c9ba9fc38914f7e (git)
From 869f37d8e48f3911eb70f38a994feaa8f8380008 before 9e5da2379f968a3ea5a6e38921ab6201576466dc (git)
From 869f37d8e48f3911eb70f38a994feaa8f8380008 before 573810f61bcd6b6815e2ff53bbdd2b9c9d747176 (git)
From 869f37d8e48f3911eb70f38a994feaa8f8380008 before 66eba0ffce3b7e11449946b4cbbef8ea36112f56 (git)

Vendor

Linux Kernel Organization, Inc

Product

Linux

Repo

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Program Files

net/netfilter/nf_conntrack_irc.c

Default Status

affected

Versions

Affected

2.6.20

Unaffected

From 0 before 2.6.20 (semver)
From 5.10.259 through 5.10.* (semver)
From 5.15.210 through 5.15.* (semver)
From 6.1.176 through 6.1.* (semver)
From 6.6.143 through 6.6.* (semver)
From 6.12.94 through 6.12.* (semver)
From 6.18.36 through 6.18.* (semver)
From 7.0.13 through 7.0.* (semver)
From 7.1 through * (original_commit_for_fix)

Metrics

Version	Base score	Base severity	Vector
3.1	8.2	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Version: 3.1

Base score: 8.2

Base severity: HIGH

Vector:

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

References

Hyperlink	Resource
https://git.kernel.org/stable/c/4cdda7f868f48e2f81579371584fdbdce37df2c8	N/A
https://git.kernel.org/stable/c/8a1d6e40dedfe1068aee094d851bd69e289c9fd6	N/A
https://git.kernel.org/stable/c/0afc802160af0df61ed374fdb97fb34cfe5cdf2f	N/A
https://git.kernel.org/stable/c/7c34f91305292083253df6a9f6c8ede02d4ccaea	N/A
https://git.kernel.org/stable/c/ddddd8271359961e403d11c90c9ba9fc38914f7e	N/A
https://git.kernel.org/stable/c/9e5da2379f968a3ea5a6e38921ab6201576466dc	N/A
https://git.kernel.org/stable/c/573810f61bcd6b6815e2ff53bbdd2b9c9d747176	N/A
https://git.kernel.org/stable/c/66eba0ffce3b7e11449946b4cbbef8ea36112f56	N/A