CVE-2022-49791

io_uring: fix multishot accept request leaks

MEDIUM
5.5
CVSS Score
Published: May 1, 2025 at 02:09 PM UTC
Updated: June 17, 2026 at 05:19 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix multishot accept request leaks Having REQ_F_POLLED set doesn't guarantee that the request is executed as a multishot from the polling path. Fortunately for us, if the code thinks it's multishot issue when it's not, it can only ask to skip completion so leaking the request. Use issue_flags to mark multipoll issues.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.19 ≤ v < 6.0.105.19 ≤ v < 6.1390ed29b5e425ba00da2b6113b74a14949f71b025.196.1 rc16.1 rc26.1 rc36.1 rc46.1 rc5
Vendor states this is fixed in 0e4626de856ef8f25ecd9c716e76d4f95ce95639 (fixed)
Vendor states this is fixed in 91482864768a874c4290ef93b84a78f4f1dac51b (fixed)
Vendor states this is fixed in 5.19 (unaffected)
Vendor states this is fixed in 6.0.10 (unaffected)
Vendor states this is fixed in 6.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0e4626de856ef8f25ecd9c716e76d4f95ce95639
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/91482864768a874c4290ef93b84a78f4f1dac51b

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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