CVE-2026-53268 PUBLISHED

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

Assigner: Linux
Reserved: 09.06.2026 Published: 25.06.2026 Updated: 25.06.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 869f37d8e48f3911eb70f38a994feaa8f8380008 to 4cdda7f868f48e2f81579371584fdbdce37df2c8 (excl.)
  • affected from 869f37d8e48f3911eb70f38a994feaa8f8380008 to 8a1d6e40dedfe1068aee094d851bd69e289c9fd6 (excl.)
  • affected from 869f37d8e48f3911eb70f38a994feaa8f8380008 to 0afc802160af0df61ed374fdb97fb34cfe5cdf2f (excl.)
  • affected from 869f37d8e48f3911eb70f38a994feaa8f8380008 to 7c34f91305292083253df6a9f6c8ede02d4ccaea (excl.)
  • affected from 869f37d8e48f3911eb70f38a994feaa8f8380008 to ddddd8271359961e403d11c90c9ba9fc38914f7e (excl.)
  • affected from 869f37d8e48f3911eb70f38a994feaa8f8380008 to 9e5da2379f968a3ea5a6e38921ab6201576466dc (excl.)
  • affected from 869f37d8e48f3911eb70f38a994feaa8f8380008 to 573810f61bcd6b6815e2ff53bbdd2b9c9d747176 (excl.)
  • affected from 869f37d8e48f3911eb70f38a994feaa8f8380008 to 66eba0ffce3b7e11449946b4cbbef8ea36112f56 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 2.6.20 is affected
  • unaffected from 0 to 2.6.20 (excl.)
  • unaffected from 5.10.259 to 5.10.* (incl.)
  • unaffected from 5.15.210 to 5.15.* (incl.)
  • unaffected from 6.1.176 to 6.1.* (incl.)
  • unaffected from 6.6.143 to 6.6.* (incl.)
  • unaffected from 6.12.94 to 6.12.* (incl.)
  • unaffected from 6.18.36 to 6.18.* (incl.)
  • unaffected from 7.0.13 to 7.0.* (incl.)
  • unaffected from 7.1 to * (incl.)

References