{"id":"CVE-2026-53242","revision":"2ad53264c09041a7ba5158203094b334","records":[{"revision":"2ad53264c09041a7ba5158203094b334","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53242","aliases":[],"title":"ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams\n\nsnd_pcm_drain() uses init_waitqueue_entry which does not clear\nentry.prev/next, and add_wait_queue with a conditional\nremove_wait_queue that is skipped when to_check is no longer\nin the group after concurrent UNLINK.  The orphaned wait entry\nremains on the unlinked substream sleep queue.  On the next\ndrain iteration, add_wait_queue adds the entry to a new queue\nwhile still linked on the old one, corrupting both lists.  A\nsubsequent wake_up dereferences NULL at the func pointer\n(mapped from the spinlock at offset 0 of the misinterpreted\nwait_queue_head_t), causing a kernel panic.\n\nReplace init_waitqueue_entry/add_wait_queue/conditional\nremove_wait_queue with init_wait_entry/prepare_to_wait/\nfinish_wait.  init_wait_entry clears prev/next via\nINIT_LIST_HEAD on each iteration and sets\nautoremove_wake_function which auto-removes the entry on\nwake-up.  finish_wait safely handles both the already-removed\nand still-queued cases.","state":0,"publishedAt":"2026-06-25T08:39:37.129+00:00","modifiedAt":"2026-10-19T19:57:31.043+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"sound/core/pcm_native.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"9baee36e8c5443411c4629afabafaff8a46a23fd\",\n                            \"lessThan\": \"cac5bf3500ee6422cf64e0df0b5daeecfed42917\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f2cb2e0d27fb925c73a78f0ce7d6dbf68d3747c1\",\n                            \"lessThan\": \"06eca2235a3fd281dddf25b0a97772b25b5bb573\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fc71f888994569f87d5bee20b1ac6c9c1e3a7a79\",\n                            \"lessThan\": \"d842f26a167e77a36f3ed333b9fa99d36ef99fe6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"629cf09464cf98670996ea5c191dc9743e6f3f00\",\n                            \"lessThan\": \"d68b621bb5a48051932f1017a6e1bc9b18f854d0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ae8f8d30d334bad5b1b3cdb1eb8a0b771f55e432\",\n                            \"lessThan\": \"b053fcd8912f06c30f932f5b8ec41c72de474695\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4a758e9a1f5ed722f83c4dd35f867fe811553bcb\",\n                            \"lessThan\": \"cd98837db15f323463b8df07282ac723bd5c3fed\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6\",\n                            \"lessThan\": \"7c71a9522555ff137a9ca36b15d759ca04d84788\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6\",\n                            \"lessThan\": \"88fe2e3658726cb21ff2dcf9770bf672f9b9d31b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2f64e05a0587a83ec42dbd6b7a7ded79b2ff694\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.10.253\",\n                            \"lessThan\": \"5.10.259\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.167\",\n                            \"lessThan\": \"6.1.176\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.130\",\n                            \"lessThan\": \"6.6.143\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.78\",\n                            \"lessThan\": \"6.12.94\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.19\",\n                            \"lessThan\": \"6.18.36\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.9\",\n                            \"lessThan\": \"6.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"sound/core/pcm_native.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.259\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.176\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.143\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.94\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.36\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.13\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/cac5bf3500ee6422cf64e0df0b5daeecfed42917","https://git.kernel.org/stable/c/06eca2235a3fd281dddf25b0a97772b25b5bb573","https://git.kernel.org/stable/c/d842f26a167e77a36f3ed333b9fa99d36ef99fe6","https://git.kernel.org/stable/c/d68b621bb5a48051932f1017a6e1bc9b18f854d0","https://git.kernel.org/stable/c/b053fcd8912f06c30f932f5b8ec41c72de474695","https://git.kernel.org/stable/c/cd98837db15f323463b8df07282ac723bd5c3fed","https://git.kernel.org/stable/c/7c71a9522555ff137a9ca36b15d759ca04d84788","https://git.kernel.org/stable/c/88fe2e3658726cb21ff2dcf9770bf672f9b9d31b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53242","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53242","identifiers":["CVE-2026-53242"]},"retained":false,"historicalAffected":[]}],"coverage":[]}