SB2024060832 - Buffer overflow in Linux kernel nfsd
Published: June 8, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024060832
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-47107)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the nfsd_proc_rmdir() and nfsd_init_dirlist_pages() functions in fs/nfsd/nfsproc.c, within the nfsd3_proc_link() and nfsd3_init_dirlist_pages() functions in fs/nfsd/nfs3proc.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/eabc0aab98e5218ceecd82069b0d6fdfff5ee885
- https://git.kernel.org/stable/c/53b1119a6e5028b125f431a0116ba73510d82a72
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.220
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16