high7.8
CVE-2026-53381
In the Linux kernel, the following vulnerability has been resolved: virtiofs: fix UAF on submount umount iput() called from fuse_release_end() can Oops if the …
Impact
In the Linux kernel, the following vulnerability has been resolved: virtiofs: fix UAF on submount umount iput() called from fuse_release_end() can Oops if the super block has already been destroyed. Normally this is prevented by waiting for num_waiting to go down to zero before commencing with super block shutdown. This only works, however, for the last submount instance, as the wait counter is per connection, not per superblock. Revert to using synchronous release requests for the auto_submounts case, which is virtiofs only at this time.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.10.246 before 5.10.260 from 5.15.196 before 5.15.211 from 6.1.158 before 6.1.177 from 6.6.115 before 6.6.144 from 6.12.54 before 6.12.95 from 6.17.4 before 6.18.37 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/06b41351779e9289e8785694ade9042ae85e41ea
- https://git.kernel.org/stable/c/0b809199ff87c44487e516a725dd4be2185712ce
- https://git.kernel.org/stable/c/1cc0e3a0c6499aaaa2f21a4fcbba388486afb25e
- https://git.kernel.org/stable/c/2181a09ba980f142650fb053666350ead4471cfe
- https://git.kernel.org/stable/c/2abfd3ffbd9452f72535d96ff3982b3ab1f8f2f9
- https://git.kernel.org/stable/c/39a2b95e008665c14f84e50ed411d898df7cd11b
- https://git.kernel.org/stable/c/607a1d4c42f649e6197567c0448fd9ebb316cd42
- https://git.kernel.org/stable/c/97c4691653d145dcc699eca5d3aba3219a520f1f
- https://git.kernel.org/stable/c/e09412a714bcd49375198427bb4aa005037a9d6f