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High 7.8Published May 27, 2026
CVE-2026-45995io_uring/zcrx: fix user_struct uaf
Updated under an hour ago ()
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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: io_uring/zcrx: fix user_struct uaf io_free_rbuf_ring() usees a struct user_struct, which io_zcrx_ifq_free() puts it down before destroying the ring.
- CVSS
- 7.8 HIGH (v3.1, NVD)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
- Analyzed
- Record last updated
- Jun 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 5c686456a4e83ef06c74d40be05c21a0ef136684 before 9feb88eeda6d288f93fcfb6bca563f89e316479d; 5c686456a4e83ef06c74d40be05c21a0ef136684 builds before 0fcccfd87152f957fa8312b841f6efef42a05a20 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.19 before 7.0.4 | NVD |
References
- https://git.kernel.org/stable/c/9feb88eeda6d288f93fcfb6bca563f89e316479dpatch
- https://git.kernel.org/stable/c/0fcccfd87152f957fa8312b841f6efef42a05a20patch
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.