Memory leak in Linux kernel - CVE-2023-53606
Published: October 4, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116478
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2023-53606
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2023-53606
Install update from vendor's repository.
Linux kernel - update to 5.10.220
External 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