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().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
bd37d6fce184836bd5e7cd90ce40116a4fadaf2a to < 0ff42a32784e0f2cb46a46da8e9f473538c13e1baffectedbd37d6fce184836bd5e7cd90ce40116a4fadaf2a to < f230d40147cc37eb3aef4d50e2e2c06ea73d9a77affectedbd37d6fce184836bd5e7cd90ce40116a4fadaf2a to < c32e3c71aaa1c1ba05da88605e2ddd493c58794faffectedbd37d6fce184836bd5e7cd90ce40116a4fadaf2a to < 181feb41f0b268e6288bf9a7b984624d7fe2031daffectedbd37d6fce184836bd5e7cd90ce40116a4fadaf2a to < 92278ae36935a54e65fef9f8ea8efe7e80481aceaffectedbd37d6fce184836bd5e7cd90ce40116a4fadaf2a to < 202a3432d21ac060629a760fff3b0a39859da3eaaffectedbd37d6fce184836bd5e7cd90ce40116a4fadaf2a to < 76d2e3890fb169168c73f2e4f8375c7cc24a765eaffected
Linux Linux
Default version status: affected
4.14affected0 to < 4.14unaffected5.10.242 to ≤ 5.10.*unaffected5.15.191 to ≤ 5.15.*unaffected6.1.150 to ≤ 6.1.*unaffected6.6.104 to ≤ 6.6.*unaffected6.12.44 to ≤ 6.12.*unaffected6.16.4 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/0ff42a32784e0f2cb46a46da8e9f473538c13e1b ↗
- https://git.kernel.org/stable/c/f230d40147cc37eb3aef4d50e2e2c06ea73d9a77 ↗
- https://git.kernel.org/stable/c/c32e3c71aaa1c1ba05da88605e2ddd493c58794f ↗
- https://git.kernel.org/stable/c/181feb41f0b268e6288bf9a7b984624d7fe2031d ↗
- https://git.kernel.org/stable/c/92278ae36935a54e65fef9f8ea8efe7e80481ace ↗
- https://git.kernel.org/stable/c/202a3432d21ac060629a760fff3b0a39859da3ea ↗
- https://git.kernel.org/stable/c/76d2e3890fb169168c73f2e4f8375c7cc24a765e ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html ↗