{"id":"CVE-2026-99182","revision":"5cefa7e9039649e78926bed873c68843","records":[{"revision":"5cefa7e9039649e78926bed873c68843","observedAt":"2026-10-28T11:27:43.363+00:00","statement":{"source":"cve-program","id":"CVE-2026-99182","aliases":[],"title":"ASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture\n\nWhen ch_count is smaller than blob->alh_cfg.device_count (e.g. a mono\ncapture stream, such as a SmartMic, aggregated across multiple SDW\nlinks), step = ch_count / blob->alh_cfg.device_count truncates to 0.\nThe subsequent GENMASK(step - 1, 0) then underflows step - 1 (u32) to\nUINT_MAX, causing GENMASK()'s internal shift to use an out-of-bounds\nexponent:\n\n  UBSAN: shift-out-of-bounds in sound/soc/sof/ipc4-topology.c:2363:13\n  shift exponent 18446744069414584384 is too large for 64-bit type 'long unsigned int'\n\nTreat ch_count < device_count the same way as the existing \"channels\nequal to output reference channels\" case: apply the same ch_mask to\nevery aggregated device instead of trying to split channels that\ncan't be evenly divided.","state":0,"publishedAt":"2026-10-28T10:35:35.193+00:00","modifiedAt":"2026-10-28T10:35:35.193+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/soc/sof/ipc4-topology.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0390a102cc18cb7456d6c1f15ac51f1af90fcf9c\",\n                            \"lessThan\": \"cad63a7798d6a6cac1fc68732595f0a3278ff6f0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0390a102cc18cb7456d6c1f15ac51f1af90fcf9c\",\n                            \"lessThan\": \"5e1322787c5e424a570e87c8c2c25e37552cbe3b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0390a102cc18cb7456d6c1f15ac51f1af90fcf9c\",\n                            \"lessThan\": \"746de48c3a250f0c264105dcbfcdf0c5001e970b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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/soc/sof/ipc4-topology.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.59\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.13\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/cad63a7798d6a6cac1fc68732595f0a3278ff6f0","https://git.kernel.org/stable/c/5e1322787c5e424a570e87c8c2c25e37552cbe3b","https://git.kernel.org/stable/c/746de48c3a250f0c264105dcbfcdf0c5001e970b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99182","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99182","identifiers":["CVE-2026-99182"]},"retained":false,"historicalAffected":[]}],"coverage":[]}