Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race between quota enable and quota rescan ioctl When enabling quotas, at btrfs_quota_enable(), after committing the transaction, we change fs_info->quota_root to point to the quota root we created and set BTRFS_FS_QUOTA_ENABLED at fs_info->flags. Then we try to start the qgroup rescan worker, first by initializing it with a call to qgroup_rescan_init() - however if that fails we end up freeing the quota root but we leave fs_info->quota_root still pointing to it, this can later result in a use-after-free somewhere else. We have previously set the flags BTRFS_FS_QUOTA_ENABLED and BTRFS_QGROUP_STATUS_FLAG_ON, so we can only fail with -EINPROGRESS at btrfs_quota_enable(), which is possible if someone already called the quota rescan ioctl, and therefore started the rescan worker. So fix this by ignoring an -EINPROGRESS and asserting we can't get any other error.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5d23515be66904fa3b1b5d6bd72d2199cd2447ab before c97f6d528c3f1c83a6b792a8a7928c236c80b8fe; affected 5d23515be66904fa3b1b5d6bd72d2199cd2447ab before 26b7c0ac49a3eea15559c9d84863736a6d1164b4; affected 5d23515be66904fa3b1b5d6bd72d2199cd2447ab before 47b5ffe86332af95f0f52be0a63d4da7c2b37b55; affected 5d23515be66904fa3b1b5d6bd72d2199cd2447ab before 4b996a3014ef014af8f97b60c35f5289210a4720; affected 5d23515be66904fa3b1b5d6bd72d2199cd2447ab before 0efd9dfc00d677a1d0929319a6103cb2dfc41c22; affected 5d23515be66904fa3b1b5d6bd72d2199cd2447ab before 6c22f86dd221eba0c7af645b1af73dcbc04ee27b; affected 5d23515be66904fa3b1b5d6bd72d2199cd2447ab before 331cd9461412e103d07595a10289de90004ac890 |
| Linux / Linux | affected 4.17; unaffected 0 before 4.17; unaffected 4.19.262 through 4.19.*; unaffected 5.4.220 through 5.4.*; unaffected 5.10.150 through 5.10.*; unaffected 5.15.75 through 5.15.*; unaffected 5.19.17 through 5.19.*; unaffected 6.0.3 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/c97f6d528c3f1c83a6b792a8a7928c236c80b8fe
- https://git.kernel.org/stable/c/26b7c0ac49a3eea15559c9d84863736a6d1164b4
- https://git.kernel.org/stable/c/47b5ffe86332af95f0f52be0a63d4da7c2b37b55
- https://git.kernel.org/stable/c/4b996a3014ef014af8f97b60c35f5289210a4720
- https://git.kernel.org/stable/c/0efd9dfc00d677a1d0929319a6103cb2dfc41c22
- https://git.kernel.org/stable/c/6c22f86dd221eba0c7af645b1af73dcbc04ee27b
- https://git.kernel.org/stable/c/331cd9461412e103d07595a10289de90004ac890
ADP enrichment
No English description supplied.
No references supplied.