CVE-2024-56606: af_packet: avoid erroring out after sock_init_data() in packet_create()
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: af_packet: avoid erroring out after sock_init_data() in packet_create() After sock_init_data() the allocated sk object is attached to the provided sock object. On error, packet_create() frees the sk object leaving the dangling pointer in the sock object on return. Some other code may try to use this pointer and cause use-after-free.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.4.287 | |
| Linux Kernel | >=5.5<5.10.231 | |
| Linux Kernel | >=5.11<5.15.174 | |
| Linux Kernel | >=5.16<6.1.120 | |
| Linux Kernel | >=6.2<6.6.66 | |
| Linux Kernel | >=6.7<6.12.5 | |
| 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/71b22837a5e55ac27d6a14b9cdf2326587405c4f
- https://git.kernel.org/stable/c/1dc1e1db927056cb323296e2294a855cd003dfe7
- https://git.kernel.org/stable/c/132e615bb1d7cdec2d3cfbdec2efa630e923fd21
- https://git.kernel.org/stable/c/a6cf750b737374454a4e03a5ed449a3eb0c96414
- https://git.kernel.org/stable/c/157f08db94123e2ba56877dd0ac88908b13a5dd0
- https://git.kernel.org/stable/c/fd09880b16d33aa5a7420578e01cd79148fa9829
- https://git.kernel.org/stable/c/46f2a11cb82b657fd15bab1c47821b635e03838b
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56606
- https://nvd.nist.gov/vuln/detail/CVE-2024-56606
- https://launchpad.net/bugs/cve/CVE-2024-56606
- https://security-tracker.debian.org/tracker/CVE-2024-56606
- https://ubuntu.com/security/CVE-2024-56606
- https://git.kernel.org/linus/46f2a11cb82b657fd15bab1c47821b635e03838b
Frequently Asked Questions
What is the severity of CVE-2024-56606?
CVE-2024-56606 has a medium severity level as it can lead to potential denial-of-service conditions.
How do I fix CVE-2024-56606?
To fix CVE-2024-56606, upgrade to a version of the Linux kernel that is beyond the specified vulnerable range.
Which Linux kernel versions are affected by CVE-2024-56606?
CVE-2024-56606 affects Linux kernel versions 5.4.287 and below, as well as various ranges up to 6.12.5.
What components are impacted by CVE-2024-56606?
CVE-2024-56606 impacts the af_packet component of the Linux kernel.
Is CVE-2024-56606 a remote vulnerability?
CVE-2024-56606 is not classified as a remote vulnerability as it requires local access to exploit.
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