NULL pointer dereference in Linux kernel - CVE-2024-43898
Published: August 26, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU96533
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-43898
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ext4_da_do_write_end() function in fs/ext4/inode.c, within the __block_commit_write() function in fs/buffer.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2024-43898
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/3f6bbe6e07e5239294ecc3d2efa70d1f98aed52e
- https://git.kernel.org/stable/c/f619876ccbfd329ae785fe5d3289b9dcd6eb5901
- https://git.kernel.org/stable/c/83f4414b8f84249d538905825b088ff3ae555652
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.47