CVE-2024-56603: net: af_can: do not leave a dangling sk pointer in can_create()
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: af_can: do not leave a dangling sk pointer in can_create() On error can_create() frees the allocated sk object, but sock_init_data() has already attached it to the provided sock object. This will leave a dangling sk pointer in the sock object and may cause use-after-free later.
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 6.1.133-1 6.12.22-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/884ae8bcee749be43a071d6ed2d89058dbd2425c
- https://git.kernel.org/stable/c/ce39b5576785bb3e66591145aad03d66bc3e778d
- https://git.kernel.org/stable/c/1fe625f12d090d69f3f084990c7e4c1ff94bfe5f
- https://git.kernel.org/stable/c/5947c9ac08f0771ea8ed64186b0d52e9029cb6c0
- https://git.kernel.org/stable/c/db207d19adbac96058685f6257720906ad41d215
- https://git.kernel.org/stable/c/8df832e6b945e1ba61467d7f1c9305e314ae92fe
- https://git.kernel.org/stable/c/811a7ca7320c062e15d0f5b171fe6ad8592d1434
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56603
- https://nvd.nist.gov/vuln/detail/CVE-2024-56603
- https://launchpad.net/bugs/cve/CVE-2024-56603
- https://security-tracker.debian.org/tracker/CVE-2024-56603
- https://ubuntu.com/security/CVE-2024-56603
- https://git.kernel.org/linus/811a7ca7320c062e15d0f5b171fe6ad8592d1434
Frequently Asked Questions
What is the severity of CVE-2024-56603?
CVE-2024-56603 is classified with a moderate severity due to the potential for a dangling pointer which can lead to system instability.
How do I fix CVE-2024-56603?
To fix CVE-2024-56603, update your Linux kernel to a version that is beyond the affected ranges described in the vulnerability.
Which Linux kernel versions are affected by CVE-2024-56603?
CVE-2024-56603 affects Linux kernel versions ranging from 5.4 up to 6.12.5 but excludes versions above these ranges.
What is the impact of CVE-2024-56603 on system security?
The impact of CVE-2024-56603 can include potential system crashes or unpredictable behavior due to the improper management of memory pointers.
Is CVE-2024-56603 being actively exploited?
As of now, there is no confirmed information indicating that CVE-2024-56603 is actively being exploited in the wild.
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