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Message-ID: <2025061842-CVE-2022-50207-fa1c@gregkh> Date: Wed, 18 Jun 2025 13:04:32 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2022-50207: ARM: bcm: Fix refcount leak in bcm_kona_smc_init From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: ARM: bcm: Fix refcount leak in bcm_kona_smc_init of_find_matching_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. The Linux kernel CVE team has assigned CVE-2022-50207 to this issue. Affected and fixed versions =========================== Issue introduced in 3.10 with commit b8eb35fd594aa5b635e329d5c8efab8aaceb8619 and fixed in 4.14.291 with commit 62d719d31ec667276d7375b64542b080cf187797 Issue introduced in 3.10 with commit b8eb35fd594aa5b635e329d5c8efab8aaceb8619 and fixed in 4.19.256 with commit 75866df2b1d673df5b7781e565ada753a7895f04 Issue introduced in 3.10 with commit b8eb35fd594aa5b635e329d5c8efab8aaceb8619 and fixed in 5.4.211 with commit 5afe042c889437de83f38a9d73d145742fb4f65f Issue introduced in 3.10 with commit b8eb35fd594aa5b635e329d5c8efab8aaceb8619 and fixed in 5.10.137 with commit 91e7f04f53e680bc72f0a9a5c682ab652100b9c8 Issue introduced in 3.10 with commit b8eb35fd594aa5b635e329d5c8efab8aaceb8619 and fixed in 5.15.61 with commit bc7f487395f208fd9af69e9a807815e10435aba7 Issue introduced in 3.10 with commit b8eb35fd594aa5b635e329d5c8efab8aaceb8619 and fixed in 5.18.18 with commit c6964cb9ac7a43bf78e7d60126e2722992de2ea1 Issue introduced in 3.10 with commit b8eb35fd594aa5b635e329d5c8efab8aaceb8619 and fixed in 5.19.2 with commit 02b658bfb26452f2c13e4577a13ab802f89a6642 Issue introduced in 3.10 with commit b8eb35fd594aa5b635e329d5c8efab8aaceb8619 and fixed in 6.0 with commit cb23389a2458c2e4bfd6c86a513cbbe1c4d35e76 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-2022-50207 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: arch/arm/mach-bcm/bcm_kona_smc.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/62d719d31ec667276d7375b64542b080cf187797 https://git.kernel.org/stable/c/75866df2b1d673df5b7781e565ada753a7895f04 https://git.kernel.org/stable/c/5afe042c889437de83f38a9d73d145742fb4f65f https://git.kernel.org/stable/c/91e7f04f53e680bc72f0a9a5c682ab652100b9c8 https://git.kernel.org/stable/c/bc7f487395f208fd9af69e9a807815e10435aba7 https://git.kernel.org/stable/c/c6964cb9ac7a43bf78e7d60126e2722992de2ea1 https://git.kernel.org/stable/c/02b658bfb26452f2c13e4577a13ab802f89a6642 https://git.kernel.org/stable/c/cb23389a2458c2e4bfd6c86a513cbbe1c4d35e76
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