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CVE-2022-48944— sched: Fix yet more sched_fork() races

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sched_fork函数通过不将任务放在运行队列上来开启与系统调用的竞争。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 13

VendorProduct Version RangeStatus
Linux Linux 3869eecf050416a1d19bac60926f6b5d64b0aa58< 3411613611a5cddf7e80908010dc87cb527dd13b affected
4ef0c5c6b5ba1f38f0ea1cedad0cad722f00c14a< c65cfd89cef669d90c59f3bf150af6458137a04f affected
4ef0c5c6b5ba1f38f0ea1cedad0cad722f00c14a< b1e8206582f9d680cff7d04828708c8b6ab32957 affected
c85c6fadbef0a3eab41540ea628fa8fe8928c820 affected
25d40b828fb855ee62e1039c65a666c9afd60786 affected
5.15.3< 5.15.27 affected
5.10.80< 5.11 affected
5.14.19< 5.15 affected
… +5 more rows
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I. Basic Information for CVE-2022-48944

Vulnerability Information
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Vulnerability Title
sched: Fix yet more sched_fork() races
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sched: Fix yet more sched_fork() races Where commit 4ef0c5c6b5ba ("kernel/sched: Fix sched_fork() access an invalid sched_task_group") fixed a fork race vs cgroup, it opened up a race vs syscalls by not placing the task on the runqueue before it gets exposed through the pidhash. Commit 13765de8148f ("sched/fair: Fix fault in reweight_entity") is trying to fix a single instance of this, instead fix the whole class of issues, effectively reverting this commit.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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sched_fork函数通过不将任务放在运行队列上来开启与系统调用的竞争。
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 3869eecf050416a1d19bac60926f6b5d64b0aa58 ~ 3411613611a5cddf7e80908010dc87cb527dd13b -
Linux Linux 5.16 -

II. Public POCs for CVE-2022-48944

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III. Intelligence Information for CVE-2022-48944

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Patches & Fixes for CVE-2022-48944 (2)

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-48944

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