Linux Kernel up to 5.16.11 ib_srp cancel_work_sync deadlock

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.16.11. It has been declared as critical. The affected element is the function cancel_work_sync of the component ib_srp. Executing a manipulation can lead to deadlock. This vulnerability is tracked as CVE-2022-48930. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.16.11 and classified as critical. This vulnerability affects the function cancel_work_sync of the component ib_srp. The manipulation with an unknown input leads to a deadlock vulnerability. The CWE definition for the vulnerability is CWE-833. The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: RDMA/ib_srp: Fix a deadlock Remove the flush_workqueue(system_long_wq) call since flushing system_long_wq is deadlock-prone and since that call is redundant with a preceding cancel_work_sync()

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2022-48930 since 08/21/2024. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 210654 (EulerOS 2.0 SP9 : kernel (EulerOS-SA-2024-2832)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.9.304, 4.14.269, 4.19.232, 5.4.182, 5.10.103, 5.15.26 or 5.16.12 eliminates this vulnerability. Applying the patch 8cc342508f9e/4752fafb4618/d7997d19dfa7/901206f71e6a/99eb8d694174/c8b56e51aa91/98d056603ce5/081bdc9fe05b is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (210654). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.9.303
• 4.14.268
• 4.19.231
• 5.4.181
• 5.10.102
• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.15.24
• 5.15.25
• 5.16.0
• 5.16.1
• 5.16.2
• 5.16.3
• 5.16.4
• 5.16.5
• 5.16.6
• 5.16.7
• 5.16.8
• 5.16.9
• 5.16.10
• 5.16.11

License

• open-source

Website

• Vendor: https://www.kernel.org/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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