btrfs: output extra debug info if we failed to find an inline backref
In the Linux kernel, the following vulnerability has been resolved: btrfs: output extra debug info if we failed to find an inline backref [BUG] Syzbot reported several warning triggered inside lookup_inline_extent_backref(). [CAUSE] As usual, the reproducer doesn't reliably trigger locally here, but at least we know the WARN_ON() is triggered when an inline backref can not be found, and it can only be triggered when @insert is true. (I.e. inserting a new inline backref, which means the backref should already exist) [ENHANCEMENT] After the WARN_ON(), dump all the parameters and the extent tree leaf to help debug.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.14.326, 4.19.295, 5.10.197, 5.15.133, 5.4.257, 6.1.55, 6.5.5
- CVEs
- CVE-2023-53672
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 19:07 UTC · Revision 1
Source evidence
btrfs: output extra debug info if we failed to find an inline backref
core-osv · Original sourcePublished 7 Oct 2025, 15:21 UTC
In the Linux kernel, the following vulnerability has been resolved: btrfs: output extra debug info if we failed to find an inline backref [BUG] Syzbot reported several warning triggered inside lookup_inline_extent_backref(). [CAUSE] As usual, the reproducer doesn't reliably trigger locally here, but at least we know the WARN_ON() is triggered when an inline backref can not be found, and it can only be triggered when @insert is true. (I.e. inserting a new inline backref, which means the backref should already exist) [ENHANCEMENT] After the WARN_ON(), dump all the parameters and the extent tree leaf to help debug.
osv:CVE-2023-53672
Kernel
Fixed versions: 4.14.326, 4.19.295, 5.4.257, 5.10.197, 5.15.133, 6.1.55, 6.5.5
Complete source record
{
"id": "a336307b1fb35e9566811df350ce5ece74b39ca30176f3716b997f0b8039d493",
"url": "https://osv.dev/vulnerability/CVE-2023-53672",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "btrfs: output extra debug info if we failed to find an inline backref",
"summary": "In the Linux kernel, the following vulnerability has been resolved: btrfs: output extra debug info if we failed to find an inline backref [BUG] Syzbot reported several warning triggered inside lookup_inline_extent_backref(). [CAUSE] As usual, the reproducer doesn't reliably trigger locally here, but at least we know the WARN_ON() is triggered when an inline backref can not be found, and it can only be triggered when @insert is true. (I.e. inserting a new inline backref, which means the backref should already exist) [ENHANCEMENT] After the WARN_ON(), dump all the parameters and the extent tree leaf to help debug.",
"evidence": "osv:CVE-2023-53672",
"products": [
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{
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{
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"severity": "unknown",
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"aliases": [
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"package": {
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"modified": "2026-10-28T02:30:38.673902541Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/28062cd6eda04035d8f6ded2001292ac8b496149",
"https://git.kernel.org/stable/c/376b41524b71e494514720bd6114325b0a2ed19c",
"https://git.kernel.org/stable/c/400e08a16604b534fdd82c5a288fa150d04f5f79",
"https://git.kernel.org/stable/c/6994f806c6d1ae8b59344d3700358547f3b3fe1d",
"https://git.kernel.org/stable/c/7afbfde45d665953b4d5a42a721e15bf0315d89b",
"https://git.kernel.org/stable/c/7f72f50547b7af4ddf985b07fc56600a4deba281",
"https://git.kernel.org/stable/c/b7c3cf2f6c42e6688b1c37215a0b1663f982f915",
"https://git.kernel.org/stable/c/e70ba449b04b40584bdabb383d10455397cbf177",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53672.json",
"https://nvd.nist.gov/vuln/detail/CVE-2023-53672",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53672.json"
}
},
"related_cves": [
{
"value": "CVE-2023-53672",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 505997,
"published_at": "2025-10-07T15:21:28.975+00:00"
}