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Message-ID: <2024110747-CVE-2024-50160-d61e@gregkh> Date: Thu, 7 Nov 2024 10:35:00 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-50160: ALSA: hda/cs8409: Fix possible NULL dereference Description =========== In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/cs8409: Fix possible NULL dereference If snd_hda_gen_add_kctl fails to allocate memory and returns NULL, then NULL pointer dereference will occur in the next line. Since dolphin_fixups function is a hda_fixup function which is not supposed to return any errors, add simple check before dereference, ignore the fail. Found by Linux Verification Center (linuxtesting.org) with SVACE. The Linux kernel CVE team has assigned CVE-2024-50160 to this issue. Affected and fixed versions =========================== Issue introduced in 5.15 with commit 20e507724113 and fixed in 5.15.170 with commit 4e19aca8db69 Issue introduced in 5.15 with commit 20e507724113 and fixed in 6.1.115 with commit 21dc97d5086f Issue introduced in 5.15 with commit 20e507724113 and fixed in 6.6.59 with commit 8971fd61210d Issue introduced in 5.15 with commit 20e507724113 and fixed in 6.11.6 with commit a5dd71a8b849 Issue introduced in 5.15 with commit 20e507724113 and fixed in 6.12-rc4 with commit c9bd4a82b4ed 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-2024-50160 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: sound/pci/hda/patch_cs8409.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/4e19aca8db696b6ba4dd8c73657405e15c695f14 https://git.kernel.org/stable/c/21dc97d5086fdabbe278786bb0a03cbf2e26c793 https://git.kernel.org/stable/c/8971fd61210d75fd2af225621cd2fcc87eb1847c https://git.kernel.org/stable/c/a5dd71a8b849626f42d08a5e73d382f2016fc7bc https://git.kernel.org/stable/c/c9bd4a82b4ed32c6d1c90500a52063e6e341517f
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