CVE-2022-42895: Info Leak in l2cap_core in the Linux Kernel
Last updated 25 April 2025
Other sources
Linux Kernel could allow a local attacker to obtain sensitive information, caused by an infoleak vulnerability in the net/bluetooth/l2capcore.c's l2capparseconfreq function. An attacker could exploit this vulnerability to obtain sensitive information.
— IBM
There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2capcore.c's l2capparseconfreq function which can be used to leak kernel pointers remotely.
References:
https://kernel.dance/#b1a2cd50c0357f243b7435a732b4e62ba3157a2e https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e
— Red Hat
There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2capcore.c's l2capparseconfreq function which can be used to leak kernel pointers remotely. We recommend upgrading past commit https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e https://www.google.com/url
— NVD
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.22-1Fixed in 6.12.25-1 - Upgrade
Upgrade
redhat/kernelto a version that resolves this vulnerability.Fixed in 6.1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch b1a2cd50c0357f243b7435a732b4e62ba3157a2e
Event History
Frequently Asked Questions
What is the severity of CVE-2022-42895?
CVE-2022-42895 is classified as a medium severity vulnerability that allows local attackers to obtain sensitive information.
How do I fix CVE-2022-42895?
To fix CVE-2022-42895, update your affected kernel to one of the following versions: 6.1 or apply vendor-specific patches.
Who is affected by CVE-2022-42895?
CVE-2022-42895 affects users of the Linux kernel, particularly versions prior to 6.1, and certain IBM Security Verify Governance products up to version 10.0.2.
What types of attacks does CVE-2022-42895 enable?
CVE-2022-42895 enables local attackers to exploit an infoleak vulnerability to access sensitive information from affected systems.
Is CVE-2022-42895 a remote vulnerability?
No, CVE-2022-42895 is a local vulnerability, meaning it can only be exploited by an attacker with local access to the affected system.