CVE-2024-53213: net: usb: lan78xx: Fix double free issue with interrupt buffer allocation
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: usb: lan78xx: Fix double free issue with interrupt buffer allocation In lan78xx_probe(), the buffer `buf` was being freed twice: once implicitly through `usb_free_urb(dev->urb_intr)` with the `URB_FREE_BUFFER` flag and again explicitly by `kfree(buf)`. This caused a double free issue. To resolve this, reordered `kmalloc()` and `usb_alloc_urb()` calls to simplify the initialization sequence and removed the redundant `kfree(buf)`. Now, `buf` is allocated after `usb_alloc_urb()`, ensuring it is correctly managed by `usb_fill_int_urb()` and freed by `usb_free_urb()` as intended.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.17<6.1.120 | |
| Linux Kernel | >=6.2<6.6.64 | |
| Linux Kernel | >=6.7<6.11.11 | |
| Linux Kernel | >=6.12<6.12.2 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 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/977128343fc2a30737399b58df8ea77e94f164bd
- https://git.kernel.org/stable/c/a422ebec863d99d5607fb41bb7af3347fcb436d3
- https://git.kernel.org/stable/c/b09512aea6223eec756f52aa584fc29eeab57480
- https://git.kernel.org/stable/c/7ac9f3c981eeceee2ec4d30d850f4a6f50a1ec40
- https://git.kernel.org/stable/c/03819abbeb11117dcbba40bfe322b88c0c88a6b6
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53213
- https://nvd.nist.gov/vuln/detail/CVE-2024-53213
- https://launchpad.net/bugs/cve/CVE-2024-53213
- https://security-tracker.debian.org/tracker/CVE-2024-53213
- https://ubuntu.com/security/CVE-2024-53213
- https://git.kernel.org/linus/03819abbeb11117dcbba40bfe322b88c0c88a6b6
Frequently Asked Questions
What is the severity of CVE-2024-53213?
CVE-2024-53213 is classified with a medium severity level due to its potential impact on system stability.
How do I fix CVE-2024-53213?
To fix CVE-2024-53213, upgrade the Linux kernel to versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.15-1.
Which versions of the Linux kernel are affected by CVE-2024-53213?
CVE-2024-53213 affects Linux kernel versions from 5.17 to 6.1.120, 6.2 to 6.6.64, 6.7 to 6.11.11, and 6.12 to 6.12.2.
Is CVE-2024-53213 an exploit-related vulnerability?
CVE-2024-53213 is a resource management issue rather than an exploit-based vulnerability.
What type of issue is described by CVE-2024-53213?
CVE-2024-53213 describes a double free issue in the USB lan78xx driver leading to potential memory corruption.
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