SB20240531519 - NULL pointer dereference in Linux kernel nfs
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531519
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2021-47179)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the _pnfs_return_layout() function in fs/nfs/pnfs.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42
- https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48
- https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494
- https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb
- https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53
- https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a
- https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.235
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.193
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.271
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.42
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.124