High · published July 25, 2026
In the Linux kernel, the following vulnerability has been resolved:
fuse: re-lock request before returning from fuse_ref_folio()
fuse_ref_folio() unlocks the request but does not re-lock it before
returning. fuse_chan_abort() can end the request and the async end
callback (eg fuse_writepage_free()) can free the args while the
subsequent copy chain logic after fuse_ref_folio() accesses them,
leading to use-after-free issues.
Fix this by locking the request in fuse_ref_folio() before returning.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 2.6.35, < 5.10.261 | 5.10.261 |
| linux/linux_kernel | ≥ 5.11, < 5.15.212 | 5.15.212 |
| linux/linux_kernel | ≥ 5.16, < 6.1.178 | 6.1.178 |
| linux/linux_kernel | ≥ 6.2, < 6.6.145 | 6.6.145 |
| linux/linux_kernel | ≥ 6.7, < 6.12.96 | 6.12.96 |
| linux/linux_kernel | ≥ 6.13, < 6.18.39 | 6.18.39 |
| linux/linux_kernel | ≥ 6.19, < 7.1.4 | 7.1.4 |