CVE-2022-49033

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49033
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49033.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49033
Downstream
Related
Published
2024-10-21T20:15:13Z
Modified
2025-08-09T19:01:29Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

btrfs: qgroup: fix sleep from invalid context bug in btrfsqgroupinherit()

Syzkaller reported BUG as follows:

BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274 Call Trace: <TASK> dumpstacklvl+0xcd/0x134 _mightresched.cold+0x222/0x26b kmemcachealloc+0x2e7/0x3c0 updateqgrouplimititem+0xe1/0x390 btrfsqgroupinherit+0x147b/0x1ee0 createsubvol+0x4eb/0x1710 btrfsmksubvol+0xfe5/0x13f0 _btrfsioctlsnapcreate+0x2b0/0x430 btrfsioctlsnapcreatev2+0x25a/0x520 btrfsioctl+0x2a1c/0x5ce0 _x64sysioctl+0x193/0x200 dosyscall_64+0x35/0x80

Fix this by calling qgroupdirty() on @dstqgroup, and update limit item in btrfsrun_qgroups() later outside of the spinlock context.

References

Affected packages