CVE-2026-45995
io_uring/zcrx: fix user_struct uaf
HIGH
7.8
CVSS Score
Published: May 27, 2026 at 12:55 PM UTC
Updated: June 17, 2026 at 10:52 AM UTC
1 product affected across 1 vendorLinux Kernel
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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Vendor states this is fixed in 0fcccfd87152f957fa8312b841f6efef42a05a20 (fixed)
Vendor states this is fixed in 9feb88eeda6d288f93fcfb6bca563f89e316479d (fixed)
Vendor states this is fixed in 6.19 (unaffected)
Vendor states this is fixed in 7.0.4 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-416
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