CVE-2024-46672: wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion
First published: Wed Sep 11 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion wpa_supplicant 2.11 sends since 1efdba5fdc2c ("Handle PMKSA flush in the driver for SAE/OWE offload cases") SSID based PMKSA del commands. brcmfmac is not prepared and tries to dereference the NULL bssid and pmkid pointers in cfg80211_pmksa. PMKID_V3 operations support SSID based updates so copy the SSID.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.4<6.6.48 | |
| Linux Kernel | >=6.7<6.10.7 | |
| Linux Kernel | =6.11-rc1 | |
| Linux Kernel | =6.11-rc2 | |
| Linux Kernel | =6.11-rc3 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 |
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Reference Links
- https://git.kernel.org/stable/c/1f566eb912d192c83475a919331aea59619e1197
- https://git.kernel.org/stable/c/2ad4e1ada8eebafa2d75a4b75eeeca882de6ada1
- https://git.kernel.org/stable/c/4291f94f8c6b01505132c22ee27b59ed27c3584f
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46672
- https://nvd.nist.gov/vuln/detail/CVE-2024-46672
- https://launchpad.net/bugs/cve/CVE-2024-46672
- https://security-tracker.debian.org/tracker/CVE-2024-46672
- https://ubuntu.com/security/CVE-2024-46672
- https://git.kernel.org/linus/2ad4e1ada8eebafa2d75a4b75eeeca882de6ada1
Frequently Asked Questions
What is the severity of CVE-2024-46672?
CVE-2024-46672 is considered a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2024-46672?
To fix CVE-2024-46672, update to the patched versions of the Linux kernel, specifically versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, or 6.12.11-1.
What is CVE-2024-46672 about?
CVE-2024-46672 addresses a vulnerability in the Linux kernel related to SSID based PMKSA deletion handled improperly by the brcmfmac driver.
Which versions of Linux are affected by CVE-2024-46672?
CVE-2024-46672 affects Linux kernel versions from 6.4 to 6.6.48 and from 6.7 to 6.10.7, along with specific release candidates.
Who is impacted by CVE-2024-46672?
Users and administrators running the affected versions of the Linux kernel in environments utilizing the brcmfmac wireless driver are impacted by CVE-2024-46672.
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