CVE-2025-40364

io_uring: fix io_req_prep_async with provided buffers

HIGH

7.8

CVSS Score

Published: April 18, 2025 at 01:50 PM UTC

Updated: August 5, 2026 at 12:45 PM UTC

1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix io_req_prep_async with provided buffers io_req_prep_async() can import provided buffers, commit the ring state by giving up on that before, it'll be reimported later if needed.

Affected

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

Linux Kernel · Linux

95%

5.19 ≤ v < 6.1.1295.19 ≤ v < 6.12.145.19 ≤ v < 6.13.35.19 ≤ v < 6.145.19 ≤ v < 6.6.786.13 ≤ v < 6.13.36.2 ≤ v < 6.6.786.7 ≤ v < 6.12.145.19c7fb19428d67dd0a2a78a4f237af01d39c78dc5a

Vendor states this is fixed in 233b210a678bddf8b49b02a070074a52b87e6d43 (fixed)

Vendor states this is fixed in 35ae7910c349fb3c60439992e2e0e79061e95382 (fixed)

Vendor states this is fixed in a1b17713b32c75a90132ea2f92b1257f3bbc20f3 (fixed)

Vendor states this is fixed in a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3 (fixed)

Vendor states this is fixed in b86f1d51731e621e83305dc9564ae14c9ef752bf (fixed)

Vendor states this is fixed in d63b0e8a628e62ca85a0f7915230186bb92f8bb4 (fixed)

Vendor states this is fixed in f0ef94553868d07c1b14d7743a7e2553e5a831a3 (fixed)

Vendor states this is fixed in 5.19 (unaffected)

Vendor states this is fixed in 6.1.129 (unaffected)

Vendor states this is fixed in 6.12.14 (unaffected)

Vendor states this is fixed in 6.13.3 (unaffected)

Vendor states this is fixed in 6.14 (unaffected)