CVE-2026-68141

CVE CVE-2026-68141EUVD EUVD-2026-55523Published 2026-08-10T11:59:05.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC. If the allocation fails, nsk is NULL. The connection-refused path is entered when the listen state check fails, the accept backlog is full, or nsk is NULL. The code unconditionally calls iucv_sock_kill(nsk) in that path. iucv_sock_kill() does not accept a NULL socket pointer and immediately dereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL, calling iucv_sock_kill(nsk) results in a NULL pointer dereference. Only call iucv_sock_kill() when a child socket was successfully allocated.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 3881ac441f642d56503818123446f7298442236b <0e857185591fe79934427c9c0c1c31dc776be134; 3881ac441f642d56503818123446f7298442236b <33736ff5e7c97d3348ce812e8bd2e125d840743c; 3881ac441f642d56503818123446f7298442236b <46453b16f38ec7147351f7447e2aec6ea330f7b3; 3881ac441f642d56503818123446f7298442236b <8bb111f87ded6acb9837ec9b45d6f02cda94c51f; patch: 6.12.101; patch: 7.2-rc5; 3.2; patch: 0; patch: 6.6.148; patch: 6.18.42; patch: 7.1.6; 3881ac441f642d56503818123446f7298442236b <47a5116e56a6b6fe1e909f244e39cd0fc26ceee4

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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