{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72302", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.918Z", "datePublished": "2026-08-15T05:55:21.049Z", "dateUpdated": "2026-08-17T05:42:34.654Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:42:34.654Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc3-control: Use overflow checks in control_update size calc\n\nIn sof_ipc3_control_update(), the expected_size calculation uses\nfirmware-provided cdata->num_elems in arithmetic that could overflow\non 32-bit platforms, wrapping to a small value. This would allow the\ncdata->rhdr.hdr.size comparison to pass with mismatched sizes,\npotentially leading to out-of-bounds access in snd_sof_update_control.\n\nUse check_mul_overflow() and check_add_overflow() to detect and reject\noverflowed size calculations." } ], "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 IPC3 GET_VALUE/GET_DATA component notifications via mailbox IRQ into sof_ipc3_control_update(); this requires local access to SOF-equipped audio hardware, not remote network delivery.\nAC:L - On affected 32-bit builds, firmware-supplied num_elems deterministically wraps expected_size so the hdr.size check passes; a local attacker can repeatedly drive DSP control notifications through ALSA without uncontrollable races or victim-specific state.\nPR:L - Only an unprivileged local user able to open ALSA control devices on SOF IPC3 hardware (typical audio-group access on laptops, Chromebooks, and 32-bit embedded tablets) is needed to exercise DSP control paths that deliver the malformed IPC payloads.\nUI:N - No separate victim interaction is required; the attacker triggers SOF control-update handling through their own ALSA audio/control activity and the kernel processes the malformed IPC notification automatically.\nS:U - Heap corruption and control-cache overread/overwrite remain within the host kernel audio driver on the same machine and do not cross VM, container, or IOMMU boundaries into another security authority.\nC:H - Bypassed size validation lets snd_sof_update_control() read chanv/binary data past the kmalloc IPC buffer via loops or memcpy, yielding out-of-bounds kernel heap reads that can disclose adjacent memory contents.\nI:H - Crafted num_elems drives out-of-bounds copying from the IPC message into control caches, corrupting kernel heap objects and enabling attacker-influenced writes exploitable for further privilege escalation.\nA:H - Out-of-bounds accesses during IRQ-threaded IPC3 control-update handling can cause KASAN faults, unhandled page faults, kernel oops, or panic under realistic SOF audio workloads on 32-bit systems." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/soc/sof/ipc3-control.c" ], "versions": [ { "version": "10f461d79c2d1afb22344986cc1b4631169cf25e", "lessThan": "6856b3c23b0995eefad5a6142b4365ef70e1fe4a", "status": "affected", "versionType": "git" }, { "version": "10f461d79c2d1afb22344986cc1b4631169cf25e", "lessThan": "89a2309a9eec80d4c19e3aed62c4f923594d1911", "status": "affected", "versionType": "git" }, { "version": "10f461d79c2d1afb22344986cc1b4631169cf25e", "lessThan": "ffd79e77f2fbacd7a5d40ad1d4c7f3f089a8f2f3", "status": "affected", "versionType": "git" }, { "version": "10f461d79c2d1afb22344986cc1b4631169cf25e", "lessThan": "711d912b18763af62a63aa8f2419a774eb63bba4", "status": "affected", "versionType": "git" }, { "version": "10f461d79c2d1afb22344986cc1b4631169cf25e", "lessThan": "312c7d2ebe696da3f885eee77d52297664e57c53", "status": "affected", "versionType": "git" }, { "version": "10f461d79c2d1afb22344986cc1b4631169cf25e", "lessThan": "8791977d7289f6e9d2b014f60a5455f053a7bc04", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/soc/sof/ipc3-control.c" ], "versions": [ { "version": "5.18", "status": "affected" }, { "version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/6856b3c23b0995eefad5a6142b4365ef70e1fe4a" }, { "url": "https://git.kernel.org/stable/c/89a2309a9eec80d4c19e3aed62c4f923594d1911" }, { "url": "https://git.kernel.org/stable/c/ffd79e77f2fbacd7a5d40ad1d4c7f3f089a8f2f3" }, { "url": "https://git.kernel.org/stable/c/711d912b18763af62a63aa8f2419a774eb63bba4" }, { "url": "https://git.kernel.org/stable/c/312c7d2ebe696da3f885eee77d52297664e57c53" }, { "url": "https://git.kernel.org/stable/c/8791977d7289f6e9d2b014f60a5455f053a7bc04" } ], "title": "ASoC: SOF: ipc3-control: Use overflow checks in control_update size calc", "x_generator": { "engine": "bippy-1.2.0" } } } }