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CVE-2025-38002— io_uring/fdinfo: grab ctx->uring_lock around io_uring_show_fdinfo()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于io_uring_show_fdinfo中缺少锁定，可能导致读取不一致的SQE字段。

CVSS 7.8 · High EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 79cfe9e59c2a12c3b3faeeefe38d23f3d8030972< bdb7d2ec2e31c46c45d1f32667dfa8216a72705e affected
79cfe9e59c2a12c3b3faeeefe38d23f3d8030972< d871198ee431d90f5308d53998c1ba1d5db5619a affected
6.13 affected
< 6.13 unaffected
6.14.8≤ 6.14.* unaffected
6.15≤ * unaffected
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I. Basic Information for CVE-2025-38002

Vulnerability Information
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Vulnerability Title
io_uring/fdinfo: grab ctx->uring_lock around io_uring_show_fdinfo()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/fdinfo: grab ctx->uring_lock around io_uring_show_fdinfo() Not everything requires locking in there, which is why the 'has_lock' variable exists. But enough does that it's a bit unwieldy to manage. Wrap the whole thing in a ->uring_lock trylock, and just return with no output if we fail to grab it. The existing trylock() will already have greatly diminished utility/output for the failure case. This fixes an issue with reading the SQE fields, if the ring is being actively resized at the same time.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于io_uring_show_fdinfo中缺少锁定，可能导致读取不一致的SQE字段。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 79cfe9e59c2a12c3b3faeeefe38d23f3d8030972 ~ bdb7d2ec2e31c46c45d1f32667dfa8216a72705e -
Linux Linux 6.13 -

II. Public POCs for CVE-2025-38002

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III. Intelligence Information for CVE-2025-38002

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Same Patch Batch · Linux · 2025-06-06 · 3 CVEs total

CVE-2025-38001 7.8 HIGH net_sched: hfsc: Address reentrant enqueue adding class to eltree twice
CVE-2025-38000 7.8 HIGH sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38002

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