CVE-2026-64483

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It can be up to 0xffff. So the\ngate allows a count up to about 16379. isight_samples() then copies\ncount frames out of payload->samples into the PCM DMA buffer.\n\npayload->samples holds only 2 * MAX_FRAMES_PER_PACKET values. The\ndevice multiplexes two samples per frame. A count past\nMAX_FRAMES_PER_PACKET reads past the payload. A count past the buffer\nsize writes past runtime->dma_area. The smallest PCM buffer is larger\nthan MAX_FRAMES_PER_PACKET. Bounding the count to MAX_FRAMES_PER_PACKET\nkeeps both the read and the write in range.\n\nA malicious or faulty Apple iSight on the FireWire bus reaches this\nduring a normal capture.\n\nAdd the MAX_FRAMES_PER_PACKET bound to the gate."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/firewire/isight.c"], "versions": [{"version": "3a691b28a0ca3cf4d9010c6158318159e0275d2c", "lessThan": "24423e0a9251d348c3f1fb0bb0e61b879e1e976c", "status": "affected", "versionType": "git"}, {"version": "3a691b28a0ca3cf4d9010c6158318159e0275d2c", "lessThan": "ebbffacda6733dcbcef601b5b523460f8d8b671e", "status": "affected", "versionType": "git"}, {"version": "3a691b28a0ca3cf4d9010c6158318159e0275d2c", "lessThan": "57e4d9043afc1eaddee8f50d11def6e65415d273", "status": "affected", "versionType": "git"}, {"version": "3a691b28a0ca3cf4d9010c6158318159e0275d2c", "lessThan": 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It can be up to 0xffff. So the\ngate allows a count up to about 16379. isight_samples() then copies\ncount frames out of payload->samples into the PCM DMA buffer.\n\npayload->samples holds only 2 * MAX_FRAMES_PER_PACKET values. The\ndevice multiplexes two samples per frame. A count past\nMAX_FRAMES_PER_PACKET reads past the payload. A count past the buffer\nsize writes past runtime->dma_area. The smallest PCM buffer is larger\nthan MAX_FRAMES_PER_PACKET. Bounding the count to MAX_FRAMES_PER_PACKET\nkeeps both the read and the write in range.\n\nA malicious or faulty Apple iSight on the FireWire bus reaches this\nduring a normal capture.\n\nAdd the MAX_FRAMES_PER_PACKET bound to the gate."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.261", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.96", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.39", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.4", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "3.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:56:30.281Z"}}}, "cveMetadata": {"cveId": "CVE-2026-64483", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:44:55.003Z", "dateReserved": "2026-07-19T15:36:31.791Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-07-25T08:51:43.851Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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It can be up to 0xffff. So the\ngate allows a count up to about 16379. isight_samples() then copies\ncount frames out of payload->samples into the PCM DMA buffer.\n\npayload->samples holds only 2 * MAX_FRAMES_PER_PACKET values. The\ndevice multiplexes two samples per frame. A count past\nMAX_FRAMES_PER_PACKET reads past the payload. A count past the buffer\nsize writes past runtime->dma_area. The smallest PCM buffer is larger\nthan MAX_FRAMES_PER_PACKET. Bounding the count to MAX_FRAMES_PER_PACKET\nkeeps both the read and the write in range.\n\nA malicious or faulty Apple iSight on the FireWire bus reaches this\nduring a normal capture.\n\nAdd the MAX_FRAMES_PER_PACKET bound to the gate."}], "id": "CVE-2026-64483", "lastModified": "2026-11-06T17:18:56.667", "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64483", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:40:04.650665Z", "version": "2.0.3"}}]}, "published": "2026-07-25T10:17:33.957", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/24423e0a9251d348c3f1fb0bb0e61b879e1e976c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/29b9667982e4df2ed7744f86b1144f8bb58eb698"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/31a01b70bb90e3ef3147f308e2ea899e1d2485ca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/31da82b9676c6b112e7c72c7529e6812b919742a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3ed2fa1ed8cc65f910b8bbc0be3cc366b30f8478"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/57e4d9043afc1eaddee8f50d11def6e65415d273"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8e48a29813df8dd71503800b7acf69c12c035045"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ebbffacda6733dcbcef601b5b523460f8d8b671e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ALSA: firewire: isight: bound the sample count to the packet payload", "id": "2507125", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507125"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["A flaw was found in the Linux kernel's ALSA FireWire iSight driver. A malicious or faulty Apple iSight device connected via FireWire can send specially crafted audio packets. The driver incorrectly processes the sample count in these packets, leading to a buffer overflow where data can be written beyond the allocated memory region. This could result in memory corruption, potentially impacting system stability or leading to further exploitation."], "name": "CVE-2026-64483", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64483\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64483\nhttps://lore.kernel.org/linux-cve-announce/2026072548-CVE-2026-64483-005d@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a691b28a0ca3cf4d9010c6158318159e0275d2c,24423e0a9251d348c3f1fb0bb0e61b879e1e976c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a691b28a0ca3cf4d9010c6158318159e0275d2c,29b9667982e4df2ed7744f86b1144f8bb58eb698)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a691b28a0ca3cf4d9010c6158318159e0275d2c,31a01b70bb90e3ef3147f308e2ea899e1d2485ca)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a691b28a0ca3cf4d9010c6158318159e0275d2c,31da82b9676c6b112e7c72c7529e6812b919742a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a691b28a0ca3cf4d9010c6158318159e0275d2c,3ed2fa1ed8cc65f910b8bbc0be3cc366b30f8478)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a691b28a0ca3cf4d9010c6158318159e0275d2c,57e4d9043afc1eaddee8f50d11def6e65415d273)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a691b28a0ca3cf4d9010c6158318159e0275d2c,8e48a29813df8dd71503800b7acf69c12c035045)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a691b28a0ca3cf4d9010c6158318159e0275d2c,ebbffacda6733dcbcef601b5b523460f8d8b671e)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.261,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.212,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.178,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.145,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.96,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.39,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.4,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-25T23:00:16.342094+00:00", "updated": "2026-08-03T18:45:17.760144+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}