CVE-2022-50379
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
btrfs: fix race between quota enable and quota rescan ioctl
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5d23515be66904fa3b1b5d6bd72d2199cd2447ab | affected | git | c97f6d528c3f1c83a6b792a8a7928c236c80b8fe | Unavailable | None listed |
| 5d23515be66904fa3b1b5d6bd72d2199cd2447ab | affected | git | 26b7c0ac49a3eea15559c9d84863736a6d1164b4 | Unavailable | None listed |
| 5d23515be66904fa3b1b5d6bd72d2199cd2447ab | affected | git | 47b5ffe86332af95f0f52be0a63d4da7c2b37b55 | Unavailable | None listed |
| 5d23515be66904fa3b1b5d6bd72d2199cd2447ab | affected | git | 4b996a3014ef014af8f97b60c35f5289210a4720 | Unavailable | None listed |
| 5d23515be66904fa3b1b5d6bd72d2199cd2447ab | affected | git | 0efd9dfc00d677a1d0929319a6103cb2dfc41c22 | Unavailable | None listed |
| 5d23515be66904fa3b1b5d6bd72d2199cd2447ab | affected | git | 6c22f86dd221eba0c7af645b1af73dcbc04ee27b | Unavailable | None listed |
| 5d23515be66904fa3b1b5d6bd72d2199cd2447ab | affected | git | 331cd9461412e103d07595a10289de90004ac890 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.17 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.17 | Unavailable | None listed |
| 4.19.262 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.220 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.150 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.75 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.19.17 | unaffected | semver | Unavailable | 5.19.* | None listed |
| 6.0.3 | unaffected | semver | Unavailable | 6.0.* | None listed |
| 6.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |