CVE & CISA-KEV Catalog

CVE-2022-49033

MEDIUM
5.5
CVSS v3
NVD

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.

How to fix

Remediation Available
linuxDebian
Fixed in:5.10.158-1CVE-2022-49033
Fixed in:6.0.12-1CVE-2022-49033
Fixed in:6.0.12-1CVE-2022-49033
Fixed in:6.0.12-1CVE-2022-49033
linuxUbuntu
Fixed in:4.4.0-280.314USN-8274-1
linux-awsUbuntu
Fixed in:4.4.0-1154.160USN-8274-1
Fixed in:4.4.0-1192.207USN-8274-1
linux-image-4.4.0-1154-awsUbuntu
Fixed in:4.4.0-1154.160USN-8274-1
linux-image-4.4.0-1155-kvmUbuntu
Fixed in:4.4.0-1155.166USN-8274-1
linux-image-4.4.0-1192-awsUbuntu
Fixed in:4.4.0-1192.207USN-8274-1
linux-image-4.4.0-280-genericUbuntu
Fixed in:4.4.0-280.314~14.04.1USN-8274-1
Fixed in:4.4.0-280.314USN-8274-1
linux-image-4.4.0-280-lowlatencyUbuntu
Fixed in:4.4.0-280.314~14.04.1USN-8274-1
Fixed in:4.4.0-280.314USN-8274-1
linux-image-awsUbuntu
Fixed in:4.4.0.1154.151USN-8274-1
Fixed in:4.4.0.1192.196USN-8274-1
linux-image-genericUbuntu
Fixed in:4.4.0.280.286USN-8274-1
linux-image-generic-lts-xenialUbuntu
Fixed in:4.4.0.280.314~14.04.1USN-8274-1
Fixed in:4.4.0.280.286USN-8274-1
linux-image-kvmUbuntu
Fixed in:4.4.0.1155.152USN-8274-1
linux-image-lowlatencyUbuntu
Fixed in:4.4.0.280.286USN-8274-1
linux-image-lowlatency-lts-xenialUbuntu
Fixed in:4.4.0.280.314~14.04.1USN-8274-1
Fixed in:4.4.0.280.286USN-8274-1
linux-image-virtualUbuntu
Fixed in:4.4.0.280.286USN-8274-1
linux-image-virtual-lts-xenialUbuntu
Fixed in:4.4.0.280.314~14.04.1USN-8274-1
Fixed in:4.4.0.280.286USN-8274-1
linux-kvmUbuntu
Fixed in:4.4.0-1155.166USN-8274-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-280.314~14.04.1USN-8274-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.25%probability of exploitation in 30 days
16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-10-30.