{"id":"AZL-111347","summary":"CVE-2026-99182 affecting package kernel 6.6.157.1-1","details":"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-\u003ealh_cfg.device_count (e.g. a mono\ncapture stream, such as a SmartMic, aggregated across multiple SDW\nlinks), step = ch_count / blob-\u003ealh_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 \u003c 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.","modified":"2026-10-30T05:35:37Z","published":"2026-10-28T11:17:39Z","upstream":["CVE-2026-99182"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99182"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.157.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-111347.json"}}],"schema_version":"1.9.2"}