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Message-ID: <2024091111-CVE-2024-46672-7542@gregkh> Date: Wed, 11 Sep 2024 17:14:27 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-46672: wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion Description =========== 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. The Linux kernel CVE team has assigned CVE-2024-46672 to this issue. Affected and fixed versions =========================== Issue introduced in 6.4 with commit a96202acaea4 and fixed in 6.6.48 with commit 4291f94f8c6b Issue introduced in 6.4 with commit a96202acaea4 and fixed in 6.10.7 with commit 1f566eb912d1 Issue introduced in 6.4 with commit a96202acaea4 and fixed in 6.11-rc4 with commit 2ad4e1ada8ee Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2024-46672 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/4291f94f8c6b01505132c22ee27b59ed27c3584f https://git.kernel.org/stable/c/1f566eb912d192c83475a919331aea59619e1197 https://git.kernel.org/stable/c/2ad4e1ada8eebafa2d75a4b75eeeca882de6ada1
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