CVE-2022-49033

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

MEDIUM

5.5

CVSS Score

Published: October 21, 2024 at 08:06 PM UTC

Updated: June 17, 2026 at 05:16 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v < 4.14.3014.1 ≤ v < 4.14.3014.1 ≤ v < 4.19.2684.1 ≤ v < 4.9.3354.1 ≤ v < 5.10.1584.1 ≤ v < 5.15.824.1 ≤ v < 5.4.2264.1 ≤ v < 6.0.124.1 ≤ v < 6.14.15 ≤ v < 4.19.2684.20 ≤ v < 5.4.2265.11 ≤ v < 5.15.825.16 ≤ v < 6.0.125.5 ≤ v < 5.10.1586.1 rc1 6.1 rc2 6.1 rc3 6.1 rc4 6.1 rc5 6.1 rc6e8c8541ac379709db8d2339e1cb720469fc2cd8f

Vendor states this is fixed in 01d7c41eac9129fba80d8aed0060caab4a7dbe09 (fixed)

Vendor states this is fixed in 044da1a371a0da579e805e89c96865f62d8f6f69 (fixed)

Vendor states this is fixed in 3c98e91be6aea4c7acf09da6eb0c107ea9186bb5 (fixed)

Vendor states this is fixed in 588ae4fdd8b11788a797776b10d6c44ae12bc133 (fixed)

Vendor states this is fixed in 89840b12c8fad7200eb6478525c13261512c01be (fixed)

Vendor states this is fixed in 8eb912af525042a7365295eb62f6d5270c2a6462 (fixed)

Vendor states this is fixed in f4b930a1602b05e77fee31f9616599b25e910a86 (fixed)

Vendor states this is fixed in f7e942b5bb35d8e3af54053d19a6bf04143a3955 (fixed)

Vendor states this is fixed in 4.1 (unaffected)

Vendor states this is fixed in 4.14.301 (unaffected)

Vendor states this is fixed in 4.19.268 (unaffected)

Vendor states this is fixed in 4.9.335 (unaffected)