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CVE-2025-38504

io_uring/zcrx: fix pp destruction warnings

MEDIUM
5.5
CVSS Score
Published: August 16, 2025 at 10:54 AM UTC
Updated: June 17, 2026 at 09:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix pp destruction warnings With multiple page pools and in some other cases we can have allocated niovs on page pool destruction. Remove a misplaced warning checking that all niovs are returned to zcrx on io_pp_zc_destroy(). It was reported before but apparently got lost.

Affected

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

Linux Kernel· Linux
95%
6.15 ≤ v < 6.15.76.15 ≤ v < 6.1634a3e60821ab9f335a58d43a88cccdbefdebdec36.156.16 rc16.16 rc26.16 rc36.16 rc46.16 rc5
Vendor states this is fixed in 203817de269539c062724d97dfa5af3cdf77a3ec (fixed)
Vendor states this is fixed in ad9f1b5bed082b9c910e2a24bae0286a70846909 (fixed)
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.15.7 (unaffected)
Vendor states this is fixed in 6.16 (unaffected)

Remediation

No guide yet

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

Patch and advisory references

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/203817de269539c062724d97dfa5af3cdf77a3ec
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ad9f1b5bed082b9c910e2a24bae0286a70846909

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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