{"id":"CVE-2026-64483","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-64483","generatedAt":"2026-10-28T02:13:01.733Z","title":"In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire: isight: bound the sample count to the packet payload isight_packet() takes the frame count from the device iso packet and checks it only against the device claimed iso…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: firewire: isight: bound the sample count to the packet payload\n\nisight_packet() takes the frame count from the device iso packet and\nchecks it only against the device claimed iso length.\n\n\tcount = be32_to_cpu(payload->sample_count);\n\tif (likely(count <= (length - 16) / 4))\n\t\tisight_samples(isight, payload->samples, count);\n\nlength is the iso header data_length. 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.","published":"2026-07-25T10:17:34.000Z","lastModified":"2026-08-17T05:17:54.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00184,"percentile":0.07953,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"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","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64483","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}