CVE-2026-68435

CVE CVE-2026-68435EUVD EUVD-2026-57043Published 2026-08-12T00:07:23.000ZLast changed 2026-08-17T05:05:31.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix address space mismatch in kexec command line lookup When searching the loaded segments for the "kexec" command line marker, the kexec_load(2) path (file_mode == 0) passes the user-space segment buffer straight to strncmp() through a bogus (char __user *) cast. This dereferences a user pointer in kernel context, which is wrong and is flagged by sparse: arch/loongarch/kernel/machine_kexec.c:84:51: sparse: incorrect type in argument 2 (different address spaces) @@ expected char const * @@ got char [noderef] __user * Here copy the marker-sized prefix of each segment into a small on-stack buffer with copy_from_user() before comparing, and skip segments that fault. The subsequent copy_from_user() that stages the full command line into the safe area is left unchanged.

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 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 <485ed44db5694d8d2e5027f63ad608e705286f30; patch: 0; patch: 6.18.42; patch: 7.1.6; 6.1; 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 <7a54e0cbaad4a5a09e7cc7a4f05d181048e98ca7; 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 <a94d6726ec8680a2b0c453fc782a543f68a1ea06; patch: 7.2

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

Does this concern one of your customers?

This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.

Try it for 28 days

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.