{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"de5f9edc705497b1b2c6b173b22f283486d2fd91","status":"affected","version":"15c5ab607045e278ebf4d2ca4aea2250617d50ca","versionType":"git"},{"lessThan":"70d6d4cfa4ad09688aed2ec8a0cfa72c31f60334","status":"affected","version":"15c5ab607045e278ebf4d2ca4aea2250617d50ca","versionType":"git"},{"lessThan":"884f575cc6acb136eb4a161d925147f85b59c27e","status":"affected","version":"15c5ab607045e278ebf4d2ca4aea2250617d50ca","versionType":"git"},{"lessThan":"05df59b9a61f7ca66548df079d306c41da23845d","status":"affected","version":"15c5ab607045e278ebf4d2ca4aea2250617d50ca","versionType":"git"},{"lessThan":"3cad86197c7bf8b45bb1d8adc1099d0913e80469","status":"affected","version":"15c5ab607045e278ebf4d2ca4aea2250617d50ca","versionType":"git"},{"lessThan":"a5fd3122283bf75c04f6414bf610100beb0565b0","status":"affected","version":"15c5ab607045e278ebf4d2ca4aea2250617d50ca","versionType":"git"},{"lessThan":"0680413f2f10aab43878dd3db711a6a9e45bab7c","status":"affected","version":"15c5ab607045e278ebf4d2ca4aea2250617d50ca","versionType":"git"},{"lessThan":"f7f3f9fd81e7adbaa12c2e62ee07f0e094a543fd","status":"affected","version":"15c5ab607045e278ebf4d2ca4aea2250617d50ca","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"2.6.37"},{"lessThan":"2.6.37","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeConfigurations":[{"negate":false,"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"2.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"cveId":"CVE-2026-64487","cwes":["CWE-125"],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: caiaq: fix out-of-bounds read in the Traktor Kontrol S4 input parser\n\nsnd_usb_caiaq_tks4_dispatch() decodes the Traktor Kontrol S4 input\nstream in fixed 16-byte (TKS4_MSGBLOCK_SIZE) message blocks. On every\niteration it advances buf and subtracts the block size while looping on\n\"while (len)\".\n\nlen is urb->actual_length. That value is supplied by the device and is\nnot guaranteed to be a multiple of 16. When a final short block leaves\nlen between 1 and 15, the loop runs once more, reads up to buf[15], and\nthen does \"len -= TKS4_MSGBLOCK_SIZE\". As len is unsigned this underflows\nto a huge value. The loop then keeps iterating and walking buf far past\nthe end of the 512-byte ep4_in_buf, reading out of bounds until a bogus\nblock id happens to be hit.\n\nIterate only while a full message block is available. This stops the\nunsigned underflow and silently drops any trailing partial block, which\ncarries no complete control value anyway.\n\nThe sibling endpoint-4 parsers are not affected. The Traktor Kontrol X1\nand Maschine arms in snd_usb_caiaq_ep4_reply_dispatch() floor\nurb->actual_length before dispatching.","epss":{"date":"2026-11-10","percentile":0.08109,"score":0.00184},"exploits":[],"kev":null,"metrics":[{"score":7.1,"severity":"high","source":"NVD: nvd@nist.gov","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}],"modifiedAt":1794506984097,"publishedAt":1784969506711,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/de5f9edc705497b1b2c6b173b22f283486d2fd91"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/70d6d4cfa4ad09688aed2ec8a0cfa72c31f60334"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/884f575cc6acb136eb4a161d925147f85b59c27e"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/05df59b9a61f7ca66548df079d306c41da23845d"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/3cad86197c7bf8b45bb1d8adc1099d0913e80469"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/a5fd3122283bf75c04f6414bf610100beb0565b0"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/0680413f2f10aab43878dd3db711a6a9e45bab7c"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f7f3f9fd81e7adbaa12c2e62ee07f0e094a543fd"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/05df59b9a61f7ca66548df079d306c41da23845d"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/0680413f2f10aab43878dd3db711a6a9e45bab7c"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/3cad86197c7bf8b45bb1d8adc1099d0913e80469"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/70d6d4cfa4ad09688aed2ec8a0cfa72c31f60334"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/884f575cc6acb136eb4a161d925147f85b59c27e"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/a5fd3122283bf75c04f6414bf610100beb0565b0"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/de5f9edc705497b1b2c6b173b22f283486d2fd91"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/f7f3f9fd81e7adbaa12c2e62ee07f0e094a543fd"}],"remediation":[{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/05df59b9a61f7ca66548df079d306c41da23845d"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/0680413f2f10aab43878dd3db711a6a9e45bab7c"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/3cad86197c7bf8b45bb1d8adc1099d0913e80469"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/70d6d4cfa4ad09688aed2ec8a0cfa72c31f60334"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/884f575cc6acb136eb4a161d925147f85b59c27e"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/a5fd3122283bf75c04f6414bf610100beb0565b0"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/de5f9edc705497b1b2c6b173b22f283486d2fd91"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/f7f3f9fd81e7adbaa12c2e62ee07f0e094a543fd"}],"revision":"6808d0d98bfcff4273354646daf54191f4f0f1f0a27b2315fc57251010ce3514","sources":[{"modifiedAt":1793983495344,"name":"CNA: Linux","retrievedAt":1793985856858,"url":"https://www.cve.org/CVERecord?id=CVE-2026-64487"},{"modifiedAt":1794506984097,"name":"NVD","retrievedAt":1794507352562,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64487"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794462703418,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-64487"}],"ssvc":{"assessedAt":1793983221910,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"ALSA: caiaq: fix out-of-bounds read in the Traktor Kontrol S4 input parser","updatedAt":1794507352562}