5.5

CVE-2022-49033: btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit()

Analyzed
AliasesUBUNTU-CVE-2022-49033DEBIAN-CVE-2022-49033
Published 21-10-2024Last modified 11-05-2026

Vulnerability summary

CVE-2022-49033 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
SUSE-SU-2025:0201-1SUSE-SU-2025:0201-2SUSE-SU-2025:0229-1SUSE-SU-2025:0236-1USN-8274-1

Timeline

  1. 21-10-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.25% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu113 products
  • linux< 4.4.0-280.314 | < 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1154.160 | < 4.4.0-1192.207 | < 4.15.0-1151.164 | < 5.4.0-1097.105 | < 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ e8c8541ac379709db8d2339e1cb720469fc2cd8f, < 89840b12c8fad7200eb6478525c13261512c01be | ≥ e8c8541ac379709db8d2339e1cb720469fc2cd8f, < 3c98e91be6aea4c7acf09da6eb0c107ea9186bb5 | ≥ e8c8541ac379709db8d2339e1cb720469fc2cd8f, < f4b930a1602b05e77fee31f9616599b25e910a86 | ≥ e8c8541ac379709db8d2339e1cb720469fc2cd8f, < 8eb912af525042a7365295eb62f6d5270c2a6462 | ≥ e8c8541ac379709db8d2339e1cb720469fc2cd8f, < 01d7c41eac9129fba80d8aed0060caab4a7dbe09 | ≥ e8c8541ac379709db8d2339e1cb720469fc2cd8f, < 044da1a371a0da579e805e89c96865f62d8f6f69 | ≥ e8c8541ac379709db8d2339e1cb720469fc2cd8f, < 588ae4fdd8b11788a797776b10d6c44ae12bc133 | ≥ e8c8541ac379709db8d2339e1cb720469fc2cd8f, < f7e942b5bb35d8e3af54053d19a6bf04143a3955 | 4.1
  • linux_kernel< 4.14.301 | ≥ 4.15, < 4.19.268 | ≥ 4.20, < 5.4.226 | ≥ 5.5, < 5.10.158 | ≥ 5.11, < 5.15.82 | ≥ 5.16, < 6.0.12 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5 | 6.1:rc6
Debian1 product
  • linux< 6.0.12-1

3 vendors · 116 products

References

13 links
Show all 13 references