CVE-2022-49033
btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit()
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit() Syzkaller reported BUG as follows: BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274 Call Trace: <TASK> dump_stack_lvl+0xcd/0x134 __might_resched.cold+0x222/0x26b kmem_cache_alloc+0x2e7/0x3c0 update_qgroup_limit_item+0xe1/0x390 btrfs_qgroup_inherit+0x147b/0x1ee0 create_subvol+0x4eb/0x1710 btrfs_mksubvol+0xfe5/0x13f0 __btrfs_ioctl_snap_create+0x2b0/0x430 btrfs_ioctl_snap_create_v2+0x25a/0x520 btrfs_ioctl+0x2a1c/0x5ce0 __x64_sys_ioctl+0x193/0x200 do_syscall_64+0x35/0x80 Fix this by calling qgroup_dirty() on @dstqgroup, and update limit item in btrfs_run_qgroups() later outside of the spinlock context.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected e8c8541ac379709db8d2339e1cb720469fc2cd8f – < 89840b12c8fad7200eb6478525c13261512c01be
- affected e8c8541ac379709db8d2339e1cb720469fc2cd8f – < 3c98e91be6aea4c7acf09da6eb0c107ea9186bb5
- affected e8c8541ac379709db8d2339e1cb720469fc2cd8f – < f4b930a1602b05e77fee31f9616599b25e910a86
- affected e8c8541ac379709db8d2339e1cb720469fc2cd8f – < 8eb912af525042a7365295eb62f6d5270c2a6462
- affected e8c8541ac379709db8d2339e1cb720469fc2cd8f – < 01d7c41eac9129fba80d8aed0060caab4a7dbe09
- affected e8c8541ac379709db8d2339e1cb720469fc2cd8f – < 044da1a371a0da579e805e89c96865f62d8f6f69
- affected e8c8541ac379709db8d2339e1cb720469fc2cd8f – < 588ae4fdd8b11788a797776b10d6c44ae12bc133
- affected e8c8541ac379709db8d2339e1cb720469fc2cd8f – < f7e942b5bb35d8e3af54053d19a6bf04143a3955
- affected 4.1
- unaffected < 4.1
- unaffected 4.9.335 – ≤ 4.9.*
- unaffected 4.14.301 – ≤ 4.14.*
- unaffected 4.19.268 – ≤ 4.19.*
- unaffected 5.4.226 – ≤ 5.4.*
- unaffected 5.10.158 – ≤ 5.10.*
- unaffected 5.15.82 – ≤ 5.15.*
- unaffected 6.0.12 – ≤ 6.0.*
- unaffected 6.1 – ≤ *
References (8)
- https://git.kernel.org/stable/c/89840b12c8fad7200eb6478525c13261512c01be (opens in a new tab)
- https://git.kernel.org/stable/c/3c98e91be6aea4c7acf09da6eb0c107ea9186bb5 (opens in a new tab)
- https://git.kernel.org/stable/c/f4b930a1602b05e77fee31f9616599b25e910a86 (opens in a new tab)
- https://git.kernel.org/stable/c/8eb912af525042a7365295eb62f6d5270c2a6462 (opens in a new tab)
- https://git.kernel.org/stable/c/01d7c41eac9129fba80d8aed0060caab4a7dbe09 (opens in a new tab)
- https://git.kernel.org/stable/c/044da1a371a0da579e805e89c96865f62d8f6f69 (opens in a new tab)
- https://git.kernel.org/stable/c/588ae4fdd8b11788a797776b10d6c44ae12bc133 (opens in a new tab)
- https://git.kernel.org/stable/c/f7e942b5bb35d8e3af54053d19a6bf04143a3955 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49033)Record last updated .