Updated: 2026-02-27 03:27:44.824996
Description:
In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a race when updating an existing write After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head. So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | MEDIUM | 4.7 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 4.7 | MEDIUM | Released | CLSA-2026:1767864313 | 2026-01-08 09:33:40 | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2026-01-17 01:37:52 | This is a race condition in the Linux kernel’s NFS client write path that only affects hosts activ... | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2026-01-17 01:37:53 | This is a race condition in the Linux kernel’s NFS client write path that only affects hosts activ... | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 4.7 | MEDIUM | Ignored | 2026-01-17 01:37:52 | This is a race condition in the Linux kernel’s NFS client write path that only affects hosts activ... | |
| Oracle Linux 7 ELS | kernel-uek | 5.4.17 | 4.7 | MEDIUM | Ignored | 2026-01-17 00:52:19 | This is a race condition in the Linux kernel’s NFS client write path that only affects hosts activ... | |
| TuxCare 9.6 ESU | kernel | 5.14.0 | 4.7 | MEDIUM | Released | CLSA-2025:1766488019 | 2025-12-23 19:45:30 | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 4.7 | MEDIUM | Ignored | 2026-01-17 00:52:17 | This is a race condition in the Linux kernel’s NFS client write path that only affects hosts activ... | |
| Ubuntu 18.04 ELS | linux | 4.15.0 | 4.7 | MEDIUM | Ignored | 2026-01-17 00:52:11 | This is a race condition in the Linux kernel’s NFS client write path that only affects hosts activ... | |
| Ubuntu 20.04 ELS | linux | 5.4.0 | 4.7 | MEDIUM | Ignored | 2026-01-17 01:29:07 | This is a race condition in the Linux kernel’s NFS client write path that only affects hosts activ... |