CVE - CVE-2025-38231

CVE-ID
CVE-2025-38231	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: Initialize ssc before laundromat_work to prevent NULL dereference In nfs4_state_start_net(), laundromat_work may access nfsd_ssc through nfs4_laundromat -> nfsd4_ssc_expire_umount. If nfsd_ssc isn't initialized, this can cause NULL pointer dereference. Normally the delayed start of laundromat_work allows sufficient time for nfsd_ssc initialization to complete. However, when the kernel waits too long for userspace responses (e.g. in nfs4_state_start_net -> nfsd4_end_grace -> nfsd4_record_grace_done -> nfsd4_cld_grace_done -> cld_pipe_upcall -> __cld_pipe_upcall -> wait_for_completion path), the delayed work may start before nfsd_ssc initialization finishes. Fix this by moving nfsd_ssc initialization before starting laundromat_work.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0fccf5f01ed28725cc313a66ca1247eef911d55e URL:https://git.kernel.org/stable/c/0fccf5f01ed28725cc313a66ca1247eef911d55e MISC:https://git.kernel.org/stable/c/5060e1a5fef184bd11d298e3f0ee920d96a23236 URL:https://git.kernel.org/stable/c/5060e1a5fef184bd11d298e3f0ee920d96a23236 MISC:https://git.kernel.org/stable/c/83ac1ba8ca102ab5c0ed4351f8ac6e74ac4d5d64 URL:https://git.kernel.org/stable/c/83ac1ba8ca102ab5c0ed4351f8ac6e74ac4d5d64 MISC:https://git.kernel.org/stable/c/a97668ec6d73dab237cd1c15efe012a10090a4ed URL:https://git.kernel.org/stable/c/a97668ec6d73dab237cd1c15efe012a10090a4ed MISC:https://git.kernel.org/stable/c/b31da62889e6d610114d81dc7a6edbcaa503fcf8 URL:https://git.kernel.org/stable/c/b31da62889e6d610114d81dc7a6edbcaa503fcf8 MISC:https://git.kernel.org/stable/c/d622c2ee6c08147ab8c9b9e37d93b6e95d3258e0 URL:https://git.kernel.org/stable/c/d622c2ee6c08147ab8c9b9e37d93b6e95d3258e0 MISC:https://git.kernel.org/stable/c/deaeb74ae9318252829c59a84a7d2316fc335660 URL:https://git.kernel.org/stable/c/deaeb74ae9318252829c59a84a7d2316fc335660
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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