Kernel compromise via redundant buffer release race
Published Dec 2, 2024 · Updated Dec 3, 2024
Use-after-free memory corruption in Qualcomm Snapdragon firmware allows local users with high privileges to compromise the kernel. A redundant user-space release command frees a buffer while kernel code can still access it, creating a race that dereferences released memory. Exploitation requires high privileges and winning the race; successful access can compromise kernel confidentiality, integrity, and availability.
Summary
What happened
Use-after-free memory corruption in Qualcomm Snapdragon firmware allows local users with high privileges to compromise the kernel. A redundant user-space release command frees a buffer while kernel code can still access it, creating a race that dereferences released memory. Exploitation requires high privileges and winning the race; successful access can compromise kernel confidentiality, integrity, and availability.
The record
- CVE
- CVE-2024-33040
- Published
- Dec 2, 2024
- Updated
- Dec 3, 2024
- Vendor
- Qualcomm
- Product
- Qualcomm WCN3660B Firmware
- Classifications
- CWE-416
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Dec 2, 2024CVE publishedPublication date reported by the CVE source.
- Dec 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=*
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo