CVE-2023-53339 (GCVE-0-2023-53339)
Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-05-11 19:43
VLAI
EPSS
VEX
Title
btrfs: fix BUG_ON condition in btrfs_cancel_balance
Summary
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);
> }
Severity
5.5 (Medium)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
ddf7e8984c83aee9122552529f4e77291903f8d9 , < ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a
(git)
Affected: 72efe5d44821e38540888a5fe3ff3d0faab6acad , < ae81329f7de3aa6f34ecdfa5412e72161a30e9ce (git) Affected: b19c98f237cd76981aaded52c258ce93f7daa8cb , < 29eefa6d0d07e185f7bfe9576f91e6dba98189c2 (git) |
guessed | |
| Linux | Linux |
Affected:
6.1.42 , < 6.1.47
(semver)
Affected: 6.4.7 , < 6.4.12 (semver) |
guessed |
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"id": "CVE-2023-53339",
"lastModified": "2026-06-17T06:44:56.297",
"metrics": {
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{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
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},
"published": "2025-09-17T15:15:37.030",
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"weaknesses": [
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"value": "CWE-617"
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"source": "nvd@nist.gov",
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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-30T10:31:12+00:00",
"cve": "CVE-2023-53339",
"id": "CVE-2023-53339",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:known_affected": "42",
"product_status:known_not_affected": "232",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Linux kernel: Denial of Service in btrfs due to race condition",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53339.json",
"version": "3"
}
}
}
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