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Message-ID: <2024110931-CVE-2024-50235-14eb@gregkh> Date: Sat, 9 Nov 2024 11:15:43 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-50235: wifi: cfg80211: clear wdev->cqm_config pointer on free Description =========== In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: clear wdev->cqm_config pointer on free When we free wdev->cqm_config when unregistering, we also need to clear out the pointer since the same wdev/netdev may get re-registered in another network namespace, then destroyed later, running this code again, which results in a double-free. The Linux kernel CVE team has assigned CVE-2024-50235 to this issue. Affected and fixed versions =========================== Issue introduced in 6.1.57 with commit c797498e860e and fixed in 6.1.116 with commit ba392e1355ba Issue introduced in 6.6 with commit 37c20b2effe9 and fixed in 6.6.60 with commit 6c44abb2d4c3 Issue introduced in 6.6 with commit 37c20b2effe9 and fixed in 6.11.7 with commit 64e4c45d23cd Issue introduced in 6.6 with commit 37c20b2effe9 and fixed in 6.12-rc6 with commit d5fee261dfd9 Issue introduced in 6.5.7 with commit 32fb9b7d98c3 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-2024-50235 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: net/wireless/core.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/ba392e1355ba74b1d4fa11b85f71ab6ed7ecc058 https://git.kernel.org/stable/c/6c44abb2d4c3262737d5d67832daebc8cf48b8c9 https://git.kernel.org/stable/c/64e4c45d23cd7f6167f69cc2d2877bc7f54292e5 https://git.kernel.org/stable/c/d5fee261dfd9e17b08b1df8471ac5d5736070917
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