debugfs: fix wait/cancellation handling during remove
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-667 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: debugfs: fix wait/cancellation handling during remove Ben Greear further reports deadlocks during concurrent debugfs remove while files are being accessed, even though the code in question now uses debugfs cancellations. Turns out that despite all the review on the locking, we missed completely that the logic is wrong: if the refcount hits zero we can finish (and need not wait for the completion), but if it doesn't we have to trigger all the cancellations. As written, we can _never_ get into the loop triggering the cancellations. Fix this, and explain it better while at it.
Why it matters now
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 | 6.7 and later | 6.7.12, 6.8.3, 6.9 | Patch available | CNA |
- Linux VendorLinux Affected 6.7 and later Fixed in 6.7.12, 6.8.3, 6.9 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.7.1 to before 6.7.12; 6.8 to before 6.8.3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:-:*:*:*:*:*:* | 6.7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:* | 6.7 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:* | 6.7 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc6:*:*:*:*:*:* | 6.7 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc7:*:*:*:*:*:* | 6.7 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.7:rc8:*:*:*:*:*:* | 6.7 rc8 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.7.1 to before 6.7.12; 6.8 to before 6.8.3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:-:*:*:*:*:*:* Versions 6.7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:* Versions 6.7 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:* Versions 6.7 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc6:*:*:*:*:*:* Versions 6.7 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc7:*:*:*:*:*:* Versions 6.7 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.7:rc8:*:*:*:*:*:* Versions 6.7 rc8 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.7.12, 6.8.3, 6.9
Vendor assessments
Red Hat
Red Hat rating: Moderate. 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 planned: Out of support scope |
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-35793
- 2026-10-03 Alias added: GHSA-pv8w-5hmg-8mf4
References
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-2024-35793 · CVE Program
- CVE-2024-35793 · NVD
- FIRST EPSS
- GHSA-pv8w-5hmg-8mf4 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-35793 · 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