CVE-2024-56745: PCI: Fix reset_method_store() memory leak
In the Linux kernel, the following vulnerability has been resolved:
PCI: Fix resetmethodstore() memory leak
In resetmethodstore(), 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 tmpoptions to iterate with strsep() so options is preserved.
Other sources
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— Launchpad
Affected Software
Remediation
Event History
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.