- Vulnerability/
- CVE-2024-56645
CVE-2024-56645: can: j1939: j1939_session_new(): fix skb reference counting
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939_session_new(): fix skb reference counting Since j1939_session_skb_queue() does an extra skb_get() for each new skb, do the same for the initial one in j1939_session_new() to avoid refcount underflow. [mkl: clean up commit message]
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| debian/linux | <=5.10.223-1 | 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/224e606a8d8e8c7db94036272c47a37455667313
- https://git.kernel.org/stable/c/4199dd78a59896e091d3a7a05a77451aa7fd724d
- https://git.kernel.org/stable/c/426d94815e12b6bdb9a75af294fbbafb9301601d
- https://git.kernel.org/stable/c/68fceb143b635cdc59fed3896d5910aff38f345e
- https://git.kernel.org/stable/c/a8c695005bfe6569acd73d777ca298ddddd66105
- https://git.kernel.org/stable/c/b3282c2bebeeb82ceec492ee4972f51ee7a4a132
- https://git.kernel.org/stable/c/f117cba69cbbd496babb3defcdf440df4fd6fe14
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56645
- https://nvd.nist.gov/vuln/detail/CVE-2024-56645
- https://launchpad.net/bugs/cve/CVE-2024-56645
- https://security-tracker.debian.org/tracker/CVE-2024-56645
- https://ubuntu.com/security/CVE-2024-56645
- https://git.kernel.org/linus/a8c695005bfe6569acd73d777ca298ddddd66105
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.
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