CVE-2025-21879 (GCVE-0-2025-21879)
Vulnerability from cvelistv5
Published
2025-03-27 14:57
Modified
2025-07-06 09:08
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/07836bc18f4ae42da4e922244f4685561c18755e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59f37036bb7ab3d554c24abc856aabca01126414Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5e79d26014f9386387575b9ed60d342057cee49bPatch
Impacted products
Vendor Product Version
Linux Linux Version: fef55c4d9c9c22264d2b2ceae1e26922cb6129a5
Version: 1020443840569535f6025a855958f07ea3eebf71
Version: 1020443840569535f6025a855958f07ea3eebf71
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   Linux Linux Version: 6.13
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