CVE-2024-56645
Linux Kernel vulnerability
- Published27 Dec 2024
Description
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]
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected products
Remediation
- 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
References
- 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://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Frequently asked
Is CVE-2024-56645 being actively exploited?
CVE-2024-56645 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.68%.
How severe is CVE-2024-56645?
CVE-2024-56645 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.68% probability of exploitation.
Which products are affected by CVE-2024-56645?
Affected products include Linux Kernel.
How do I fix CVE-2024-56645?
Upgrade affected software to a fixed version, for example Linux Kernel 5.15.174 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2024-56645 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.