{"id":"CVE-2026-72303","state":"PUBLISHED","title":"ASoC: SOF: ipc4-control: Validate notification payload size","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-control: Validate notification payload size\n\nValidate MODULE_NOTIFICATION payload length before reading\nbytes/channel data in control update handling.","publishedAt":"2026-08-15T05:55:21.667Z","updatedAt":"2026-10-16T18:55:16.397Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2a28b5240f2b328495c6565d277f438dbc583d61","status":"affected","lessThan":"c29f5b4498894aebb2f87b1a29bb320e2f9348f9","versionType":"git"},{"version":"2a28b5240f2b328495c6565d277f438dbc583d61","status":"affected","lessThan":"5bdfeccb7fbf6e000fc783cd8412732e67c1ad0c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/sof/ipc4-control.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.0","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/sof/ipc4-control.c"]}],"references":["https://git.kernel.org/stable/c/c29f5b4498894aebb2f87b1a29bb320e2f9348f9","https://git.kernel.org/stable/c/5bdfeccb7fbf6e000fc783cd8412732e67c1ad0c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72303.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72303","state":"PUBLISHED","datePublished":"2026-08-15T05:55:21.667Z","dateUpdated":"2026-10-16T18:55:16.397Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.918Z"},"containers":{"cna":{"title":"ASoC: SOF: ipc4-control: Validate notification payload size","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-control: Validate notification payload size\n\nValidate MODULE_NOTIFICATION payload length before reading\nbytes/channel data in control update handling."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2a28b5240f2b328495c6565d277f438dbc583d61","status":"affected","lessThan":"c29f5b4498894aebb2f87b1a29bb320e2f9348f9","versionType":"git"},{"version":"2a28b5240f2b328495c6565d277f438dbc583d61","status":"affected","lessThan":"5bdfeccb7fbf6e000fc783cd8412732e67c1ad0c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/sof/ipc4-control.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.0","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/sof/ipc4-control.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c29f5b4498894aebb2f87b1a29bb320e2f9348f9"},{"url":"https://git.kernel.org/stable/c/5bdfeccb7fbf6e000fc783cd8412732e67c1ad0c"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The flaw is reached when the on-chip SOF DSP delivers IPC4 MODULE_NOTIFICATION messages to the host via mailbox/IRQ; exploitation requires local access to a SOF-equipped system using the ALSA control interface, not remote network delivery.\nAC:L - A local attacker can repeatedly issue ALSA control ioctls that cause the DSP to emit control-change notifications; no race or victim state beyond attacker-driven audio IPC is needed to supply inconsistent num_elems versus event_data_size.\nPR:L - Only an unprivileged local user able to open ALSA control devices on SOF hardware (typical on Intel laptop/desktop audio stacks) is required; root or init-namespace capabilities are not needed to drive the vulnerable notification path.\nUI:N - No action by a separate victim is required; the attacker triggers DSP notifications through their own ALSA control operations and the kernel processes malformed firmware payloads automatically.\nS:U - Impact stays within the host kernel audio subsystem on the same machine; heap disclosure or control-cache corruption does not cross VM, container, or IOMMU boundaries into another security authority.\nC:H - Missing payload-length validation lets num_elems drive memcpy and chanv parsing beyond the kmalloc IPC notification buffer, causing out-of-bounds kernel heap reads that can disclose adjacent memory contents.\nI:H - Untrusted num_elems values cause kernel memory corruption by copying out-of-bounds firmware/heap bytes into control caches via memcpy and chanv updates, providing bounded but attacker-influenced kernel writes usable in further exploitation.\nA:H - Large num_elems values trigger extensive out-of-bounds accesses during IRQ-threaded IPC notification handling, which can provoke KASAN faults, unhandled page faults, kernel oops, or panic under realistic SOF workloads."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:42:35.730Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-72303","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-16T18:46:16.232770Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-16T18:55:16.397Z"}}]}}}