{"schema":"threatline.record/2","record":{"id":"CVE-2026-99182","aliases":[],"summary":"ASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture","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->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.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99182","source_modified_at":"2026-10-28T10:35:35.193Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"Linux","vendor":"Linux","versions":[{"version":"0390a102cc18cb7456d6c1f15ac51f1af90fcf9c","lessThan":"cad63a7798d6a6cac1fc68732595f0a3278ff6f0","status":"affected","versionType":"git"},{"version":"0390a102cc18cb7456d6c1f15ac51f1af90fcf9c","lessThan":"5e1322787c5e424a570e87c8c2c25e37552cbe3b","status":"affected","versionType":"git"},{"version":"0390a102cc18cb7456d6c1f15ac51f1af90fcf9c","lessThan":"746de48c3a250f0c264105dcbfcdf0c5001e970b","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99182","source_modified_at":"2026-10-28T10:35:35.193Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.3","status":"affected"},{"version":"0","lessThan":"6.3","status":"unaffected","versionType":"semver"},{"version":"6.18.59","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.13","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99182","source_modified_at":"2026-10-28T10:35:35.193Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"Linux","ecosystem":null},"version":"5e1322787c5e424a570e87c8c2c25e37552cbe3b","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99182","source_modified_at":"2026-10-28T10:35:35.193Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"Linux","ecosystem":null},"version":"746de48c3a250f0c264105dcbfcdf0c5001e970b","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T10:35:35.193Z","modified_at":"2026-10-28T10:35:35.193Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99182","fetched_at":"2026-10-28T15:55:58.673066Z","source_modified_at":"2026-10-28T10:35:35.193Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/cad63a7798d6a6cac1fc68732595f0a3278ff6f0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/5e1322787c5e424a570e87c8c2c25e37552cbe3b"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/746de48c3a250f0c264105dcbfcdf0c5001e970b"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-28T10:35:35.193Z","content_hash":"46a8d9a26fb6d4a44ed3d5eac9460aac005120b5d24e52dc6b997a2aa9020105"}}