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Message-ID: <2024030142-CVE-2021-47079-3934@gregkh> Date: Fri, 1 Mar 2024 22:15:52 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2021-47079: platform/x86: ideapad-laptop: fix a NULL pointer dereference Description =========== In the Linux kernel, the following vulnerability has been resolved: platform/x86: ideapad-laptop: fix a NULL pointer dereference The third parameter of dytc_cql_command should not be NULL since it will be dereferenced immediately. The Linux kernel CVE team has assigned CVE-2021-47079 to this issue. Affected and fixed versions =========================== Issue introduced in 5.12 with commit ff36b0d953dc4 and fixed in 5.12.7 with commit beab753fe3b4 Issue introduced in 5.12 with commit ff36b0d953dc4 and fixed in 5.13 with commit ff67dbd554b2 Please see https://www.kernel.org or 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-2021-47079 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/platform/x86/ideapad-laptop.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/beab753fe3b4e087411a850a64c6cd748544d8a1 https://git.kernel.org/stable/c/ff67dbd554b2aaa22be933eced32610ff90209dd
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