CVE-2023-53339: In the Linux kernel, the following vulnerability has been resolved: btrfs: fix BUG_ON condition in btrfs_cancel_balance Pausing and canceling balance can race…

PriorityP420medium5.5CVSS 3.1

AVLACLPRLUINSUCNINAH

EPSS

0.19%

8.5th percentile

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix BUG_ON condition in btrfs_cancel_balance Pausing and canceling balance can race to interrupt balance lead to BUG_ON panic in btrfs_cancel_balance. The BUG_ON condition in btrfs_cancel_balance does not take this race scenario into account. However, the race condition has no other side effects. We can fix that. Reproducing it with panic trace like this: kernel BUG at fs/btrfs/volumes.c:4618! RIP: 0010:btrfs_cancel_balance+0x5cf/0x6a0 Call Trace: ? do_nanosleep+0x60/0x120 ? hrtimer_nanosleep+0xb7/0x1a0 ? sched_core_clone_cookie+0x70/0x70 btrfs_ioctl_balance_ctl+0x55/0x70 btrfs_ioctl+0xa46/0xd20 __x64_sys_ioctl+0x7d/0xa0 do_syscall_64+0x38/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Race scenario as follows: > mutex_unlock(&fs_info->balance_mutex); > -------------------- > .......issue pause and cancel req in another thread > -------------------- > ret = __btrfs_balance(fs_info); > > mutex_lock(&fs_info->balance_mutex); > if (ret == -ECANCELED && atomic_read(&fs_info->balance_pause_req)) { > btrfs_info(fs_info, "balance: paused"); > btrfs_exclop_balance(fs_info, BTRFS_EXCLOP_BALANCE_PAUSED); > }

Affected

17 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.1.52-1 (bookworm)	linux 6.1.52-1 (bookworm)
linux	linux	>= 6.1.42 < 6.1.47	6.1.47
linux	linux	>= 6.4.7 < 6.4.12	6.4.12
linux	linux	>= 72efe5d44821e38540888a5fe3ff3d0faab6acad < ae81329f7de3aa6f34ecdfa5412e72161a30e9ce	ae81329f7de3aa6f34ecdfa5412e72161a30e9ce
linux	linux	>= b19c98f237cd76981aaded52c258ce93f7daa8cb < 29eefa6d0d07e185f7bfe9576f91e6dba98189c2	29eefa6d0d07e185f7bfe9576f91e6dba98189c2
linux	linux	>= ddf7e8984c83aee9122552529f4e77291903f8d9 < ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a	ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a
linux	linux_kernel	< 4.19.293	4.19.293
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.197-1	5.10.197-1
linux	linux_kernel	>= 0 < 6.1.52-1	6.1.52-1
linux	linux_kernel	>= 0 < 6.4.13-1	6.4.13-1
linux	linux_kernel	>= 0 < 6.4.13-1	6.4.13-1
linux	linux_kernel	>= 4.20 < 5.4.255	5.4.255
linux	linux_kernel	>= 5.11 < 5.15.128	5.15.128
linux	linux_kernel	>= 5.16 < 6.1.47	6.1.47
linux	linux_kernel	>= 5.5 < 5.10.192	5.10.192
linux	linux_kernel	>= 6.2 < 6.4.12	6.4.12

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv5.5MEDIUM

vendor_debian5.5MEDIUM

vendor_redhat5.5MEDIUM

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