SB2025100436 - Memory leak in Linux kernel nfsd
Published: October 4, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100436
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) Memory leak (CVE-ID: CVE-2023-53606)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the nfsd4_cleanup_inter_ssc(), nfsd4_setup_intra_ssc(), dup_copy_fields(), nfsd4_do_async_copy() and nfsd4_copy() functions in fs/nfsd/nfs4proc.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/6ba434cb1a8d403ea9aad1b667c3ea3ad8b3191f
- https://git.kernel.org/stable/c/75b8c681c563ef7e85da6862354efc18d2a08b1b
- https://git.kernel.org/stable/c/8f565846fbe8182961498d4cbe618b15076a683b
- https://git.kernel.org/stable/c/b3169b6ffe036b549c296a9e71591d29a1fb3209
- https://git.kernel.org/stable/c/fd63299db8090307eae66f2aef17c8f00aafa0a9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.220