What is CVE-2023-53339?

CVE-2023-53339 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.1.42 onward and patched in 6.1.47 and 6.4.12. CVE-2023-53339 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53339?

CVE-2023-53339 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-53339?

Yes, CVE-2023-53339 has been patched. Fixed versions include 6.1.47 and 6.4.12. If you are running Linux kernel 6.1.42 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53339 actively exploited?

CVE-2023-53339 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53339

Medium

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: <TASK> ? 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); > }

Package Linux Kernel

Published 2025-09-17

Last modified 2026-01-05

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-617

CVE-2023-53339 is classified as CWE-617

See CWE-617 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.1.42, 6.4.7 and later are affected. Fixed in 6.1.47, 6.4.12 and their respective stable series.

Affected from

≥ 6.1.42 ≥ 6.4.7

Fixed in

✓ 6.1.47 6.1.x ✓ 6.4.12 6.4.x

References

3 total

Kernel Git
https://git.kernel.org/stable/c/29eefa6d0d07e185f7bfe9576f91e6dba98189c2

Patch
Kernel Git
https://git.kernel.org/stable/c/ae81329f7de3aa6f34ecdfa5412e72161a30e9ce

Patch
Kernel Git
https://git.kernel.org/stable/c/ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a

Patch

Details

CVE ID CVE-2023-53339

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-09-17

Modified 2026-01-05

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53339?

CVE-2023-53339 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.1.42 onward and has been patched in 6.1.47 and 6.4.12. CVE-2023-53339 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53339?

CVE-2023-53339 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-53339?

Yes. CVE-2023-53339 has been patched. Fixed versions include 6.1.47 and 6.4.12. If you are running Linux kernel 6.1.42 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53339 actively exploited?

No. CVE-2023-53339 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.