{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64483","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.791Z","datePublished":"2026-07-25T08:51:43.851Z","dateUpdated":"2026-08-17T04:56:30.281Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T04:56:30.281Z"},"descriptions":[{"lang":"en","value":"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."}],"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":"3ed2fa1ed8cc65f910b8bbc0be3cc366b30f8478","status":"affected","versionType":"git"},{"version":"3a691b28a0ca3cf4d9010c6158318159e0275d2c","lessThan":"31da82b9676c6b112e7c72c7529e6812b919742a","status":"affected","versionType":"git"},{"version":"3a691b28a0ca3cf4d9010c6158318159e0275d2c","lessThan":"8e48a29813df8dd71503800b7acf69c12c035045","status":"affected","versionType":"git"},{"version":"3a691b28a0ca3cf4d9010c6158318159e0275d2c","lessThan":"31a01b70bb90e3ef3147f308e2ea899e1d2485ca","status":"affected","versionType":"git"},{"version":"3a691b28a0ca3cf4d9010c6158318159e0275d2c","lessThan":"29b9667982e4df2ed7744f86b1144f8bb58eb698","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/firewire/isight.c"],"versions":[{"version":"3.0","status":"affected"},{"version":"0","lessThan":"3.0","status":"unaffected","versionType":"semver"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","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":"6.12.96","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.39","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.4","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":"3.0","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.12.96"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.18.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"7.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/24423e0a9251d348c3f1fb0bb0e61b879e1e976c"},{"url":"https://git.kernel.org/stable/c/ebbffacda6733dcbcef601b5b523460f8d8b671e"},{"url":"https://git.kernel.org/stable/c/57e4d9043afc1eaddee8f50d11def6e65415d273"},{"url":"https://git.kernel.org/stable/c/3ed2fa1ed8cc65f910b8bbc0be3cc366b30f8478"},{"url":"https://git.kernel.org/stable/c/31da82b9676c6b112e7c72c7529e6812b919742a"},{"url":"https://git.kernel.org/stable/c/8e48a29813df8dd71503800b7acf69c12c035045"},{"url":"https://git.kernel.org/stable/c/31a01b70bb90e3ef3147f308e2ea899e1d2485ca"},{"url":"https://git.kernel.org/stable/c/29b9667982e4df2ed7744f86b1144f8bb58eb698"}],"title":"ALSA: firewire: isight: bound the sample count to the packet payload","x_generator":{"engine":"bippy-1.2.0"}}}}