← CVE Intelligence

CVE-2025-21879

btrfs: fix use-after-free on inode when scanning root during em shrinking PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix use-after-free on inode when scanning root during em shrinking At btrfs_scan_root() we are accessing the inode's root (and fs_info) in a call to btrfs_fs_closing() after we have scheduled the inode for a delayed iput, and that can result in a use-after-free on the inode in case the cleaner kthread does the iput before we dereference the inode in the call to btrfs_fs_closing(). Fix this by using the fs_info stored already in a local variable instead of doing inode->root->fs_info.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected fef55c4d9c9c22264d2b2ceae1e26922cb6129a5 before 07836bc18f4ae42da4e922244f4685561c18755e; affected 1020443840569535f6025a855958f07ea3eebf71 before 5e79d26014f9386387575b9ed60d342057cee49b; affected 1020443840569535f6025a855958f07ea3eebf71 before 59f37036bb7ab3d554c24abc856aabca01126414
Linux / Linuxaffected 6.13; unaffected 0 before 6.13; unaffected 6.13.6 through 6.13.*; unaffected 6.14 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.