CVE-2024-56645: can: j1939: j1939_session_new(): fix skb reference counting
In the Linux kernel, the following vulnerability has been resolved:
can: j1939: j1939sessionnew(): fix skb reference counting
Since j1939sessionskbqueue() does an extra skbget() for each new skb, do the same for the initial one in j1939sessionnew() to avoid refcount underflow.
[mkl: clean up commit message]
Other sources
This CVE was automatically created from a reference found in an email or other text. If you are reading this, then this CVE entry is probably erroneous, since this text should be replaced by the official CVE description automatically.
— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.27-1 - Upgrade
Upgrade
debian/linux-6.1to a version that resolves this vulnerability.Fixed in 6.1.129-1~deb11u1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-56645?
CVE-2024-56645 is classified as a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2024-56645?
To address CVE-2024-56645, update to the latest version of the Linux kernel that includes the fix for this vulnerability.
What is the impact of CVE-2024-56645?
CVE-2024-56645 can lead to reference counting issues which may result in system instability or crashes.
Is CVE-2024-56645 exploitable remotely?
CVE-2024-56645 is not classified as a remote exploit, as it primarily affects local kernel operations.
Which versions of the Linux kernel are affected by CVE-2024-56645?
CVE-2024-56645 affects multiple versions of the Linux kernel prior to the release containing the fix.