CVE-2026-53268
published 2026-06-25CVE-2026-53268: 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…
PriorityP344high8.2CVSS 3.1
AVNACLPRNUINSUCLINAH
EPSS
0.36%
28.5th percentile
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
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 869f37d8e48f3911eb70f38a994feaa8f8380008 < 4cdda7f868f48e2f81579371584fdbdce37df2c8 | 4cdda7f868f48e2f81579371584fdbdce37df2c8 |
| linux | linux | >= 869f37d8e48f3911eb70f38a994feaa8f8380008 < 8a1d6e40dedfe1068aee094d851bd69e289c9fd6 | 8a1d6e40dedfe1068aee094d851bd69e289c9fd6 |
| linux | linux | >= 869f37d8e48f3911eb70f38a994feaa8f8380008 < 0afc802160af0df61ed374fdb97fb34cfe5cdf2f | 0afc802160af0df61ed374fdb97fb34cfe5cdf2f |
| linux | linux | >= 869f37d8e48f3911eb70f38a994feaa8f8380008 < 7c34f91305292083253df6a9f6c8ede02d4ccaea | 7c34f91305292083253df6a9f6c8ede02d4ccaea |
| linux | linux | >= 869f37d8e48f3911eb70f38a994feaa8f8380008 < ddddd8271359961e403d11c90c9ba9fc38914f7e | ddddd8271359961e403d11c90c9ba9fc38914f7e |
| linux | linux | >= 869f37d8e48f3911eb70f38a994feaa8f8380008 < 9e5da2379f968a3ea5a6e38921ab6201576466dc | 9e5da2379f968a3ea5a6e38921ab6201576466dc |
| linux | linux | >= 869f37d8e48f3911eb70f38a994feaa8f8380008 < 573810f61bcd6b6815e2ff53bbdd2b9c9d747176 | 573810f61bcd6b6815e2ff53bbdd2b9c9d747176 |
| linux | linux | >= 869f37d8e48f3911eb70f38a994feaa8f8380008 < 66eba0ffce3b7e11449946b4cbbef8ea36112f56 | 66eba0ffce3b7e11449946b4cbbef8ea36112f56 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 2.6.20 < 5.10.259 | 5.10.259 |
| linux | linux_kernel | >= 5.11 < 5.15.210 | 5.15.210 |
| linux | linux_kernel | >= 5.16 < 6.1.176 | 6.1.176 |
| linux | linux_kernel | >= 6.13 < 6.18.36 | 6.18.36 |
| linux | linux_kernel | >= 6.19 < 7.0.13 | 7.0.13 |
| linux | linux_kernel | >= 6.2 < 6.6.143 | 6.6.143 |
| linux | linux_kernel | >= 6.7 < 6.12.94 | 6.12.94 |
CVSS provenance
nvdv3.18.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
vendor_redhat7.0MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
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
ghsa_unreviewed·2026-06-25
CVE-2026-53268 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
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.
Red Hat
kernel: netfilter: conntrack_irc: fix possible out-of-bounds read
vendor_redhat·2026-06-25·CVSS 7.0
CVE-2026-53268 [MEDIUM] CWE-125 kernel: netfilter: conntrack_irc: fix possible out-of-bounds read
kernel: 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.
A flaw was found in the Linux kernel's netfilter conntrack_irc module. This vulnerability allows for a possible out-of-bounds read. When parsing network traffic, if a command string is matched but subsequent parsing fails, the system does not properly exit, leading to the flaw. This could potentially allow an attacker to cause a denial of service or disclose sensitive information.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0afc802160af0df61ed374fdb97fb34cfe5cdf2fhttps://git.kernel.org/stable/c/4cdda7f868f48e2f81579371584fdbdce37df2c8https://git.kernel.org/stable/c/573810f61bcd6b6815e2ff53bbdd2b9c9d747176https://git.kernel.org/stable/c/66eba0ffce3b7e11449946b4cbbef8ea36112f56https://git.kernel.org/stable/c/7c34f91305292083253df6a9f6c8ede02d4ccaeahttps://git.kernel.org/stable/c/8a1d6e40dedfe1068aee094d851bd69e289c9fd6https://git.kernel.org/stable/c/9e5da2379f968a3ea5a6e38921ab6201576466dchttps://git.kernel.org/stable/c/ddddd8271359961e403d11c90c9ba9fc38914f7e
2026-06-25
Published