btrfs: output extra debug info if we failed to find an inline backref
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
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.
Why it matters now
EPSS 0.00149 4th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.14.326, 4.19.295, 5.4.257 +5Red Hat: 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.9 and later | 4.14.326, 4.19.295, 5.4.257, 5.10.197, 5.15.133, 6.1.55, 6.5.5, 6.6 | Patch available | CNA |
- Linux VendorLinux Affected 3.9 and later Fixed in 4.14.326, 4.19.295, 5.4.257, 5.10.197, 5.15.133, 6.1.55, 6.5.5, 6.6 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.9.1 to before 4.14.326; 4.15 to before 4.19.295; 4.20 to before 5.4.257; 5.5 to before 5.10.197; 5.11 to before 5.15.133; 5.16 to before 6.1.55; 6.2 to before 6.5.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9:-:*:*:*:*:*:* | 3.9 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:* | 3.9 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:* | 3.9 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9:rc5:*:*:*:*:*:* | 3.9 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9:rc6:*:*:*:*:*:* | 3.9 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9:rc7:*:*:*:*:*:* | 3.9 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9:rc8:*:*:*:*:*:* | 3.9 rc8 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.9.1 to before 4.14.326; 4.15 to before 4.19.295; 4.20 to before 5.4.257; 5.5 to before 5.10.197; 5.11 to before 5.15.133; 5.16 to before 6.1.55; 6.2 to before 6.5.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9:-:*:*:*:*:*:* Versions 3.9 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:* Versions 3.9 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:* Versions 3.9 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9:rc5:*:*:*:*:*:* Versions 3.9 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9:rc6:*:*:*:*:*:* Versions 3.9 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9:rc7:*:*:*:*:*:* Versions 3.9 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9:rc8:*:*:*:*:*:* Versions 3.9 rc8 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.14.326, 4.19.295, 5.4.257, 5.10.197, 5.15.133, 6.1.55, 6.5.5, 6.6
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2023-53672
- 2026-10-03 Alias added: GHSA-vgqm-7wmp-qp26
References
Patch 8
- https://git.kernel.org/stable/c/376b41524b71e494514720bd6114325b0a2ed19c
- https://git.kernel.org/stable/c/400e08a16604b534fdd82c5a288fa150d04f5f79
- https://git.kernel.org/stable/c/7afbfde45d665953b4d5a42a721e15bf0315d89b
- https://git.kernel.org/stable/c/b7c3cf2f6c42e6688b1c37215a0b1663f982f915
- https://git.kernel.org/stable/c/6994f806c6d1ae8b59344d3700358547f3b3fe1d
- https://git.kernel.org/stable/c/28062cd6eda04035d8f6ded2001292ac8b496149
- https://git.kernel.org/stable/c/e70ba449b04b40584bdabb383d10455397cbf177
- https://git.kernel.org/stable/c/7f72f50547b7af4ddf985b07fc56600a4deba281
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2023-53672 · CVE Program
- CVE-2023-53672 · NVD
- FIRST EPSS
- GHSA-vgqm-7wmp-qp26 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-53672 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences