CVE-2024-56745: PCI: Fix reset_method_store() memory leak
First published: Sun Dec 29 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: PCI: Fix reset_method_store() memory leak In reset_method_store(), a string is allocated via kstrndup() and assigned to the local "options". options is then used in with strsep() to find spaces: while ((name = strsep(&options, " ")) != NULL) { If there are no remaining spaces, then options is set to NULL by strsep(), so the subsequent kfree(options) doesn't free the memory allocated via kstrndup(). Fix by using a separate tmp_options to iterate with strsep() so options is preserved.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.15<5.15.174 | |
| Linux Kernel | >=5.16<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 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/403efb4457c0c8f8f51e904cc57d39193780c6bd
- https://git.kernel.org/stable/c/931d07ccffcc3614f20aaf602b31e89754e21c59
- https://git.kernel.org/stable/c/8e098baf6bc3f3a6aefc383509aba07e202f7ee0
- https://git.kernel.org/stable/c/543d0eb40e45c6a51f1bff02f417b602e54472d5
- https://git.kernel.org/stable/c/fe6fae61f3b993160aef5fe2b7141a83872c144f
- https://git.kernel.org/stable/c/2985b1844f3f3447f2d938eff1ef6762592065a5
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56745
- https://nvd.nist.gov/vuln/detail/CVE-2024-56745
- https://launchpad.net/bugs/cve/CVE-2024-56745
- https://security-tracker.debian.org/tracker/CVE-2024-56745
- https://ubuntu.com/security/CVE-2024-56745
- https://git.kernel.org/linus/2985b1844f3f3447f2d938eff1ef6762592065a5
Frequently Asked Questions
What is the severity of CVE-2024-56745?
The severity of CVE-2024-56745 is categorized as moderate due to the potential memory leak in the Linux kernel.
How do I fix CVE-2024-56745?
To fix CVE-2024-56745, update your Linux kernel to a patched version beyond 5.15.174, 6.1.120, 6.6.64, 6.11.11, or 6.12.2.
Which Linux kernel versions are affected by CVE-2024-56745?
CVE-2024-56745 affects Linux kernel versions from 5.15 to 5.15.174, 5.16 to 6.1.120, 6.2 to 6.6.64, 6.7 to 6.11.11, and 6.12 to 6.12.2.
What does CVE-2024-56745 exploit?
CVE-2024-56745 exploits a memory leak in the reset_method_store() function within the Linux kernel.
Is there a workaround for CVE-2024-56745?
There is no official workaround for CVE-2024-56745; the recommended action is to update to a secure kernel version.
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