CVE-2025-40275
Vulnerability Scoring
Analysis In Progress
CVE-2025-40275 Vulnerability Analysis & Exploit Details
CVE-2025-40275
Attack Complexity Details
-
Attack Complexity:
Attack Complexity Analysis In Progress
-
Attack Vector:
Attack Vector Under Analysis
-
Privileges Required:
None
No authentication is required for exploitation.
-
Scope:
Impact is confined to the initially vulnerable component.
-
User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2025-40275 Details
Status: Received on 06 Dec 2025, 22:15 UTC
Published on: 06 Dec 2025, 22:15 UTC
CVSS Release:
CVE-2025-40275 Vulnerability Summary
CVE-2025-40275: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd In snd_usb_create_streams(), for UAC version 3 devices, the Interface Association Descriptor (IAD) is retrieved via usb_ifnum_to_if(). If this call fails, a fallback routine attempts to obtain the IAD from the next interface and sets a BADD profile. However, snd_usb_mixer_controls_badd() assumes that the IAD retrieved from usb_ifnum_to_if() is always valid, without performing a NULL check. This can lead to a NULL pointer dereference when usb_ifnum_to_if() fails to find the interface descriptor. This patch adds a NULL pointer check after calling usb_ifnum_to_if() in snd_usb_mixer_controls_badd() to prevent the dereference. This issue was discovered by syzkaller, which triggered the bug by sending a crafted USB device descriptor.
Assessing the Risk of CVE-2025-40275
Access Complexity Graph
The exploitability of CVE-2025-40275 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2025-40275
No exploitability data is available for CVE-2025-40275.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2025-40275, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2025-40275, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
-
Confidentiality:
None
CVE-2025-40275 does not compromise confidentiality.
-
Integrity:
None
CVE-2025-40275 does not impact data integrity.
-
Availability:
None
CVE-2025-40275 does not affect system availability.
CVE-2025-40275 References
External References
- https://git.kernel.org/stable/c/23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4
- https://git.kernel.org/stable/c/2762d3ea9c929ca4094541ca517c317ffa94625b
- https://git.kernel.org/stable/c/57f607c112966c21240c424b33e2cb71e121dcf0
- https://git.kernel.org/stable/c/632108ec072ad64c8c83db6e16a7efee29ebfb74
- https://git.kernel.org/stable/c/85568535893600024d7d8794f4f8b6428b521e0c
- https://git.kernel.org/stable/c/9f282104627be5fbded3102ff9004f753c55a063
- https://git.kernel.org/stable/c/c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6
- https://git.kernel.org/stable/c/cbdbfc756f2990942138ed0138da9303b4dbf9ff
CWE Common Weakness Enumeration
Unknown
Protect Your Infrastructure against CVE-2025-40275: Combat Critical CVE Threats
Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.
Other 5 Recently Published CVEs Vulnerabilities
- CVE-2025-40289 – In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM Otherwise accessi...
- CVE-2025-40288 – In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix NULL pointer dereference in VRAM logic for APU devices Previo...
- CVE-2025-40287 – In the Linux kernel, the following vulnerability has been resolved: exfat: fix improper check of dentry.stream.valid_size We found an infinite lo...
- CVE-2025-40286 – In the Linux kernel, the following vulnerability has been resolved: smb/server: fix possible memory leak in smb2_read() Memory leak occurs when k...
- CVE-2025-40285 – In the Linux kernel, the following vulnerability has been resolved: smb/server: fix possible refcount leak in smb2_sess_setup() Reference count o...