btrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found
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: 1 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: fix invalid leaf access in btrfs_quota_enable() if ref key not found If btrfs_search_slot_for_read() returns 1, it means we did not find any key greater than or equals to the key we asked for, meaning we have reached the end of the tree and therefore the path is not valid. If this happens we need to break out of the loop and stop, instead of continuing and accessing an invalid path.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00128 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10, 5.10.252, 5.15.202 +6Red Hat: 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.9.7 to before 5.10 | 5.10 | Patch available | CNA |
| Linux | Linux | 5.10 and later | 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0 | Patch available | CNA |
- Linux VendorLinux Affected 5.9.7 to before 5.10 Fixed in 5.10 Patch available CNA
- Linux VendorLinux Affected 5.10 and later Fixed in 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.9.7 to before 5.10; 5.10.1 to before 5.10.252; 5.11 to before 5.15.202; 5.16 to before 6.1.165; 6.2 to before 6.6.128; 6.7 to before 6.12.75; 6.13 to before 6.18.14; 6.19 to before 6.19.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:* | 5.10 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc2:*:*:*:*:*:* | 5.10 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc3:*:*:*:*:*:* | 5.10 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:* | 5.10 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc5:*:*:*:*:*:* | 5.10 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc6:*:*:*:*:*:* | 5.10 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.10:rc7:*:*:*:*:*:* | 5.10 rc7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.9.7 to before 5.10; 5.10.1 to before 5.10.252; 5.11 to before 5.15.202; 5.16 to before 6.1.165; 6.2 to before 6.6.128; 6.7 to before 6.12.75; 6.13 to before 6.18.14; 6.19 to before 6.19.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:* Versions 5.10 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc2:*:*:*:*:*:* Versions 5.10 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc3:*:*:*:*:*:* Versions 5.10 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:* Versions 5.10 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc5:*:*:*:*:*:* Versions 5.10 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc6:*:*:*:*:*:* Versions 5.10 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.10:rc7:*:*:*:*:*:* Versions 5.10 rc7 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10
- Fix · CNA Linux (Linux) Fixed in 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-45974
- 2026-10-03 Alias added: GHSA-9f93-r4x7-fg5m
- 2026-11-06 CISA SSVC decision points changed
References
Patch 8
- https://git.kernel.org/stable/c/023545e272f369d487e6a986c1e321c6e04be1da
- https://git.kernel.org/stable/c/fd4913a53e3b54ad7e161847291439fe445d6356
- https://git.kernel.org/stable/c/b5b8ade9da452086e78f5d519b90d3769e354853
- https://git.kernel.org/stable/c/1ee1d006c9fe4d6be5527ab1c84216b80cccbe40
- https://git.kernel.org/stable/c/0761447f6f51e1c7997960d8e6559337deed6729
- https://git.kernel.org/stable/c/d7cf2314dd5e8661c05d076cd627eea9a7f76616
- https://git.kernel.org/stable/c/b2bd557b75b760e4b9d209112bda19314bd64558
- https://git.kernel.org/stable/c/ecb7c2484cfc83a93658907580035a8adf1e0a92
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-2026-45974 · CVE Program
- CVE-2026-45974 · NVD
- FIRST EPSS
- GHSA-9f93-r4x7-fg5m · GitHub Advisory Database · CC BY 4.0
- CVE-2026-45974 · 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