SB20240621102 - NULL pointer dereference in Linux kernel jfs
Published: June 21, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240621102
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-2021-47340)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the jfs_evict_inode() function in fs/jfs/inode.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/7bde24bde490f3139eee147efc6d60d6040fe975
- https://git.kernel.org/stable/c/745c9a59422c63f661f4374ed5181740db4130a1
- https://git.kernel.org/stable/c/49def1b0644892e3b113673c13d650c3060b43bc
- https://git.kernel.org/stable/c/aff8d95b69051d0cf4acc3d91f22299fdbb9dfb3
- https://git.kernel.org/stable/c/a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2
- https://git.kernel.org/stable/c/8018936950360f1c503bb385e158cfc5e4945d18
- https://git.kernel.org/stable/c/3bb27e27240289b47d3466f647a55c567adbdc3a
- https://git.kernel.org/stable/c/42f102ea1943ecb10a0756bf75424de5d1d5beed
- https://git.kernel.org/stable/c/9d574f985fe33efd6911f4d752de6f485a1ea732
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.240
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.198
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.276
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.276
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.51
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.18
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.133