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High 7.8Published Jul 29, 2026
CVE-2026-64559s390/pkey: Check length in PKEY_VERIFYPROTK ioctl
Updated under an hour ago ()
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In the Linux kernel, the following vulnerability has been resolved: s390/pkey: Check length in PKEY_VERIFYPROTK ioctl Explicitly check the buffer length request structure provided by user-space and fail, if it exceeds the buffer size.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- 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
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 8fcc231ce3bea12b78bb94b280cdc03cff342435 builds before 0a9e34ccbe772b8f321388cdbdf4f22b94e513e7; from 8fcc231ce3bea12b78bb94b280cdc03cff342435 before 693bf91d4db134f9b1c2840c8e287eee3d993bac; 8fcc231ce3bea12b78bb94b280cdc03cff342435 builds before 7e7e03848c918aa0acad5ffd75d929e3afec1554; from 8fcc231ce3bea12b78bb94b280cdc03cff342435 before b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970 | CNA record |
References
- https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7
- https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac
- https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554
- https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970
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.