CVE-2026-68178

CVE CVE-2026-68178EUVD EUVD-2026-55279Published 2026-08-10T11:59:49.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: misc: nsm: pin the module while the device is open misc_open() installs a misc driver's file operations with fops_get(), which pins file_operations::owner before replacing the file's f_op. The NSM misc device leaves nsm_dev_fops.owner unset, so opening /dev/nsm does not take a module reference on the nsm driver. If the driver is built as a module, an open file descriptor can therefore survive rmmod of the module that provides its ioctl callbacks. A later ioctl through that descriptor can call into unloaded module text. Set nsm_dev_fops.owner to THIS_MODULE so the misc core holds the module while any /dev/nsm file descriptor is open, matching the lifetime expectation for the installed file operations.

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 b9873755a6c8ccfce79094c4dce9efa3ecb1a749 <1da310b94504d42001e9c32c43c5dc105b777e5f; patch: 6.12.101; patch: 7.2-rc5; b9873755a6c8ccfce79094c4dce9efa3ecb1a749 <3b231f1e9990f4c21220d0a69733ce2105891ff9; patch: 6.18.42; patch: 7.1.6; b9873755a6c8ccfce79094c4dce9efa3ecb1a749 <1996639f824ce9468395cdb7bcb8f467fa787e77; 6.8; b9873755a6c8ccfce79094c4dce9efa3ecb1a749 <9e9a82d00c3d10129fc310a7547b24a679d5d920; patch: 0

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

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Linux — Linux

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