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().
Product status
bd37d6fce184836bd5e7cd90ce40116a4fadaf2a (git) before 0ff42a32784e0f2cb46a46da8e9f473538c13e1b
bd37d6fce184836bd5e7cd90ce40116a4fadaf2a (git) before f230d40147cc37eb3aef4d50e2e2c06ea73d9a77
bd37d6fce184836bd5e7cd90ce40116a4fadaf2a (git) before c32e3c71aaa1c1ba05da88605e2ddd493c58794f
bd37d6fce184836bd5e7cd90ce40116a4fadaf2a (git) before 181feb41f0b268e6288bf9a7b984624d7fe2031d
bd37d6fce184836bd5e7cd90ce40116a4fadaf2a (git) before 92278ae36935a54e65fef9f8ea8efe7e80481ace
bd37d6fce184836bd5e7cd90ce40116a4fadaf2a (git) before 202a3432d21ac060629a760fff3b0a39859da3ea
bd37d6fce184836bd5e7cd90ce40116a4fadaf2a (git) before 76d2e3890fb169168c73f2e4f8375c7cc24a765e
4.14
Any version before 4.14
5.10.242 (semver)
5.15.191 (semver)
6.1.150 (semver)
6.6.104 (semver)
6.12.44 (semver)
6.16.4 (semver)
6.17 (original_commit_for_fix)
References
git.kernel.org/...c/0ff42a32784e0f2cb46a46da8e9f473538c13e1b
git.kernel.org/...c/f230d40147cc37eb3aef4d50e2e2c06ea73d9a77
git.kernel.org/...c/c32e3c71aaa1c1ba05da88605e2ddd493c58794f
git.kernel.org/...c/181feb41f0b268e6288bf9a7b984624d7fe2031d
git.kernel.org/...c/92278ae36935a54e65fef9f8ea8efe7e80481ace
git.kernel.org/...c/202a3432d21ac060629a760fff3b0a39859da3ea
git.kernel.org/...c/76d2e3890fb169168c73f2e4f8375c7cc24a765e
