CVE-2026-74683
What it is
In the Linux kernel, the following vulnerability has been resolved: Input: evdev - sanitize event type index when fetching event masks The user-supplied event type index passed to EVIOCGMASK / EVIOCSMASK ioctls is used to index the static counts array in evdev_get_mask_cnt() and client evmasks array in evdev_get_mask(). While the event type is architecturally bounded by EV_CNT, speculative execution may mispredict bounds checks and perform out-of-bounds loads. Sanitize the event type index in evdev_get_mask_cnt() branchlessly using array_index_mask_nospec(). This clamps the index to 0 for safe array access and forces the returned count to 0 speculatively when the index is out of bounds. We do not need additional array_index_nospec() calls in evdev_get_mask() because evdev_get_mask_cnt() speculatively forces the count (and resulting xfer_size) to 0 for out-of-bounds types, preventing any speculative memory access to client evmasks array.
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-2026-74683.md and follow it. Check whether this project is affected by CVE-2026-74683. 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/3abd29c61d2ef37c4102cf755b18be53bb9dbea6
- https://git.kernel.org/stable/c/4034ef247a9dde3f56660b01f0c3280dac6b1274
- https://git.kernel.org/stable/c/433913b4a92214d76e9f0c03ad9128fec943d5f8
- https://git.kernel.org/stable/c/5db341189bb7ff041d570dbe36ecca7e32913927
- https://git.kernel.org/stable/c/810e1883d4815f29c30d900ad7333d03cc2515d1
- https://git.kernel.org/stable/c/c79b08d8fa230871a3634e34a66e591ac2d084ef
- https://git.kernel.org/stable/c/f27fa9b39f925d26e034a1f382cb45523138f4ae
- https://git.kernel.org/stable/c/f3fc329acad9a71b3c077237cbac20670d2358c8