CVE-2026-74379
What it is
In the Linux kernel, the following vulnerability has been resolved: dax/kmem: account for partial discontiguous resource upon removal When dev_dax_kmem_probe() partially succeeds (at least one range is mapped) but a subsequent range fails request_mem_region() or add_memory_driver_managed(), the probe silently continues, ultimately returning success, but with the corresponding range resource NULL'ed out. dev_dax_kmem_remove() iterates over all dax_device ranges regardless of if the underlying resource exists. When remove_memory() is called later, it returns 0 because the memory was never added which causes dev_dax_kmem_remove() to incorrectly assume the (nonexistent) resource can be removed and attempts cleanup on a NULL pointer. Fix this by skipping these ranges altogether, noting that these cases are considered success, such that the cleanup is still reached when all actually-added ranges are successfully removed.
At a glance
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: not scored yet.
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Received
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-74379.md and follow it. Check whether this project is affected by CVE-2026-74379. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
References
- https://git.kernel.org/stable/c/30ea97affbcce236c57287c82dc6ef7a29c63b76
- https://git.kernel.org/stable/c/598ed7393a639c7547b28ff3e14db9f1ac37c132
- https://git.kernel.org/stable/c/5d3139abb9d1671fa5e42c3d6d8cb3b05479c5bb
- https://git.kernel.org/stable/c/799e54c510a03a65a57627018a817838d72f35bd
- https://git.kernel.org/stable/c/8aa442cfce79e2d69e72fc8e0c0864ac2971149d
- https://git.kernel.org/stable/c/d47b0b8a69a13e06afafa54723f3e8c99b0c788f
- https://git.kernel.org/stable/c/ef4fc53898bd6c4d0119cc6d419ebef7f2560f31