Description
In the Linux kernel, the following vulnerability has been resolved: net: rose: convert 'use' field to refcount_t The 'use' field in struct rose_neigh is used as a reference counter but lacks atomicity. This can lead to race conditions where a rose_neigh structure is freed while still being referenced by other code paths. For example, when rose_neigh->use becomes zero during an ioctl operation via rose_rt_ioctl(), the structure may be removed while its timer is still active, potentially causing use-after-free issues. This patch changes the type of 'use' from unsigned short to refcount_t and updates all code paths to use rose_neigh_hold() and rose_neigh_put() which operate reference counts atomically.
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before fb07156cc0742ba4e93dfcc84280c011d05b301f
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before f8c29fc437d03a98fb075c31c5be761cc8326284
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 0085b250fcc79f900c82a69980ec2f3e1871823b
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 203e4f42596ede31498744018716a3db6dbb7f51
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before d860d1faa6b2ce3becfdb8b0c2b048ad31800061
2.6.12
Any version before 2.6.12
6.1.150 (semver)
6.6.104 (semver)
6.12.45 (semver)
6.16.5 (semver)
6.17 (original_commit_for_fix)
References
git.kernel.org/...c/fb07156cc0742ba4e93dfcc84280c011d05b301f
git.kernel.org/...c/f8c29fc437d03a98fb075c31c5be761cc8326284
git.kernel.org/...c/0085b250fcc79f900c82a69980ec2f3e1871823b
git.kernel.org/...c/203e4f42596ede31498744018716a3db6dbb7f51
git.kernel.org/...c/d860d1faa6b2ce3becfdb8b0c2b048ad31800061
