PT-2026-52950 · Undefined · Undefined
Publicado
2026-06-26
·
Atualizado
2026-06-26
·
CVE-2026-53311
Nenhuma
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In the Linux kernel, the following vulnerability has been resolved:
fuse: fix uninit-value in fuse dentry revalidate()
fuse dentry revalidate() may be called with a dentry that didn't had
->d time initialised. The issue was found with KMSAN, where lookup open()
calls d alloc(), followed by d revalidate(), as shown below:
=====================================================
BUG: KMSAN: uninit-value in fuse dentry revalidate+0x150/0x13d0 fs/fuse/dir.c:394
fuse dentry revalidate+0x150/0x13d0 fs/fuse/dir.c:394
d revalidate fs/namei.c:1030 [inline]
lookup open fs/namei.c:4405 [inline]
open last lookups fs/namei.c:4583 [inline]
path openat+0x1614/0x64c0 fs/namei.c:4827
do file open+0x2aa/0x680 fs/namei.c:4859
[...]
Uninit was created at: slab post alloc hook mm/slub.c:4466 [inline] slab alloc node mm/slub.c:4788 [inline] kmem cache alloc lru noprof+0x382/0x1280 mm/slub.c:4807 d alloc+0x55/0xa00 fs/dcache.c:1740 d alloc parallel+0x99/0x2740 fs/dcache.c:2604 lookup open fs/namei.c:4398 [inline] open last lookups fs/namei.c:4583 [inline] path openat+0x135f/0x64c0 fs/namei.c:4827 do file open+0x2aa/0x680 fs/namei.c:4859 [...]
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