btrfs：qgroup：修复 btrfs_qgroup_inherit() 中无效上下文错误导致的睡眠问题（CVE-2022-49033）

CVE编号

CVE-2022-49033

利用情况

暂无

补丁情况

N/A

披露时间

2024-10-22

漏洞描述

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.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://git.kernel.org/stable/c/01d7c41eac9129fba80d8aed0060caab4a7dbe09
https://git.kernel.org/stable/c/044da1a371a0da579e805e89c96865f62d8f6f69
https://git.kernel.org/stable/c/3c98e91be6aea4c7acf09da6eb0c107ea9186bb5
https://git.kernel.org/stable/c/588ae4fdd8b11788a797776b10d6c44ae12bc133
https://git.kernel.org/stable/c/89840b12c8fad7200eb6478525c13261512c01be
https://git.kernel.org/stable/c/8eb912af525042a7365295eb62f6d5270c2a6462
https://git.kernel.org/stable/c/f4b930a1602b05e77fee31f9616599b25e910a86
https://git.kernel.org/stable/c/f7e942b5bb35d8e3af54053d19a6bf04143a3955

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	系统	debian_11	linux	*		Up to (excluding) 5.10.158-1
	运行在以下环境
	系统	debian_12	linux	*		Up to (excluding) 6.0.12-1

CVSS3评分 N/A

• 攻击路径 N/A
• 攻击复杂度 N/A
• 权限要求 N/A
• 影响范围 N/A
• 用户交互 N/A
• 可用性 N/A
• 保密性 N/A
• 完整性 N/A

N/A

CWE-ID	漏洞类型

Exp相关链接

- avd.aliyun.com