usb: typec: ucsi: Fix null pointer dereference in trace
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 4 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: Fix null pointer dereference in trace ucsi_register_altmode checks IS_ERR for the alt pointer and treats NULL as valid. When CONFIG_TYPEC_DP_ALTMODE is not enabled, ucsi_register_displayport returns NULL which causes a NULL pointer dereference in trace. Rather than return NULL, call typec_port_register_altmode to register DisplayPort alternate mode as a non-controllable mode when CONFIG_TYPEC_DP_ALTMODE is not enabled.
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 | 5.2 and later | 5.4.284, 5.10.226, 5.15.167, 6.1.109, 6.6.50, 6.10.9, 6.11 | Patch available | CNA |
- Linux VendorLinux Affected 5.2 and later Fixed in 5.4.284, 5.10.226, 5.15.167, 6.1.109, 6.6.50, 6.10.9, 6.11 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 5.4.284; 5.5 to before 5.10.226; 5.11 to before 5.15.167; 5.16 to before 6.1.109; 6.2 to before 6.6.50; 6.7 to before 6.10.9 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.4.284; 5.5 to before 5.10.226; 5.11 to before 5.15.167; 5.16 to before 6.1.109; 6.2 to before 6.6.50; 6.7 to before 6.10.9 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.284, 5.10.226, 5.15.167, 6.1.109, 6.6.50, 6.10.9, 6.11
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 |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 9 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-46719
- 2026-10-03 Alias added: GHSA-7ccw-f88q-2crh
References
Patch 7
- https://git.kernel.org/stable/c/8095bf0579ed4906a33f7bec675bfb29b6b16a3b
- https://git.kernel.org/stable/c/7e64cabe81c303bdf6fd26b6a09a3289b33bc870
- https://git.kernel.org/stable/c/3aa56313b0de06ce1911950b2cc0c269614a87a9
- https://git.kernel.org/stable/c/b4243c05d7e3db0bdbf9124e6fa59b4ca7c807ae
- https://git.kernel.org/stable/c/3b9f2d9301ae67070fe77a0c06758722fd7172b7
- https://git.kernel.org/stable/c/99331fe68a8eaa4097143a33fb0c12d5e5e8e830
- https://git.kernel.org/stable/c/99516f76db48e1a9d54cdfed63c1babcee4e71a5
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- 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
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- 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-2024-46719 · CVE Program
- CVE-2024-46719 · NVD
- FIRST EPSS
- GHSA-7ccw-f88q-2crh · GitHub Advisory Database · CC BY 4.0
- CVE-2024-46719 · 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