CVE-2026-53311

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> fuse: fix uninit-value in fuse_dentry_revalidate()<br /> <br /> fuse_dentry_revalidate() may be called with a dentry that didn&amp;#39;t had<br /> -&gt;d_time initialised. The issue was found with KMSAN, where lookup_open()<br /> calls __d_alloc(), followed by d_revalidate(), as shown below:<br /> <br /> =====================================================<br /> BUG: KMSAN: uninit-value in fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394<br /> fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394<br /> d_revalidate fs/namei.c:1030 [inline]<br /> lookup_open fs/namei.c:4405 [inline]<br /> open_last_lookups fs/namei.c:4583 [inline]<br /> path_openat+0x1614/0x64c0 fs/namei.c:4827<br /> do_file_open+0x2aa/0x680 fs/namei.c:4859<br /> [...]<br /> <br /> Uninit was created at:<br /> slab_post_alloc_hook mm/slub.c:4466 [inline]<br /> slab_alloc_node mm/slub.c:4788 [inline]<br /> kmem_cache_alloc_lru_noprof+0x382/0x1280 mm/slub.c:4807<br /> __d_alloc+0x55/0xa00 fs/dcache.c:1740<br /> d_alloc_parallel+0x99/0x2740 fs/dcache.c:2604<br /> lookup_open fs/namei.c:4398 [inline]<br /> open_last_lookups fs/namei.c:4583 [inline]<br /> path_openat+0x135f/0x64c0 fs/namei.c:4827<br /> do_file_open+0x2aa/0x680 fs/namei.c:4859<br /> [...]<br /> =====================================================