CVE-2026-74683Input: evdev - sanitize event type index when fetching event masks
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 06a16293f71927f756dcf37558a79c0b05a91641 before c79b08d8fa230871a3634e34a66e591ac2d084ef; from 06a16293f71927f756dcf37558a79c0b05a91641 before f27fa9b39f925d26e034a1f382cb45523138f4ae; from 06a16293f71927f756dcf37558a79c0b05a91641 before f3fc329acad9a71b3c077237cbac20670d2358c8; 06a16293f71927f756dcf37558a79c0b05a91641 builds before 5db341189bb7ff041d570dbe36ecca7e32913927; from 06a16293f71927f756dcf37558a79c0b05a91641 before 433913b4a92214d76e9f0c03ad9128fec943d5f8; from 06a16293f71927f756dcf37558a79c0b05a91641 before 4034ef247a9dde3f56660b01f0c3280dac6b1274; from 06a16293f71927f756dcf37558a79c0b05a91641 before 810e1883d4815f29c30d900ad7333d03cc2515d1; 06a16293f71927f756dcf37558a79c0b05a91641 builds before 3abd29c61d2ef37c4102cf755b18be53bb9dbea6 | CNA record |
References
- https://git.kernel.org/stable/c/c79b08d8fa230871a3634e34a66e591ac2d084ef
- https://git.kernel.org/stable/c/f27fa9b39f925d26e034a1f382cb45523138f4ae
- https://git.kernel.org/stable/c/f3fc329acad9a71b3c077237cbac20670d2358c8
- https://git.kernel.org/stable/c/5db341189bb7ff041d570dbe36ecca7e32913927
- https://git.kernel.org/stable/c/433913b4a92214d76e9f0c03ad9128fec943d5f8
- https://git.kernel.org/stable/c/4034ef247a9dde3f56660b01f0c3280dac6b1274
- https://git.kernel.org/stable/c/810e1883d4815f29c30d900ad7333d03cc2515d1
- https://git.kernel.org/stable/c/3abd29c61d2ef37c4102cf755b18be53bb9dbea6
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.