CVE-2022-49033

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

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

MITRE

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.

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-08-22 CVE Reserved
2024-10-21 CVE Published
2024-10-31 EPSS Updated
2024-11-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/89840b12c8fad7200eb6478525c13261512c01be	2022-12-08
https://git.kernel.org/stable/c/3c98e91be6aea4c7acf09da6eb0c107ea9186bb5	2022-12-08
https://git.kernel.org/stable/c/f4b930a1602b05e77fee31f9616599b25e910a86	2022-12-08
https://git.kernel.org/stable/c/8eb912af525042a7365295eb62f6d5270c2a6462	2022-12-08
https://git.kernel.org/stable/c/01d7c41eac9129fba80d8aed0060caab4a7dbe09	2022-12-08
https://git.kernel.org/stable/c/044da1a371a0da579e805e89c96865f62d8f6f69	2022-12-08
https://git.kernel.org/stable/c/588ae4fdd8b11788a797776b10d6c44ae12bc133	2022-12-08
https://git.kernel.org/stable/c/f7e942b5bb35d8e3af54053d19a6bf04143a3955	2022-11-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.9.335 Search vendor "Linux" for product "Linux Kernel" and version " < 4.9.335"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.301 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.301"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.268 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.268"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.226 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.226"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.158 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.158"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.82 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.82"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.0.12 Search vendor "Linux" for product "Linux Kernel" and version " < 6.0.12"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1"		en		Affected