{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23208","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:37:45.986Z","datePublished":"2026-02-14T16:27:30.441Z","dateUpdated":"2026-05-11T22:02:24.809Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:02:24.809Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Prevent excessive number of frames\n\nIn this case, the user constructed the parameters with maxpacksize 40\nfor rate 22050 / pps 1000, and packsize[0] 22 packsize[1] 23. The buffer\nsize for each data URB is maxpacksize * packets, which in this example\nis 40 * 6 = 240; When the user performs a write operation to send audio\ndata into the ALSA PCM playback stream, the calculated number of frames\nis packsize[0] * packets = 264, which exceeds the allocated URB buffer\nsize, triggering the out-of-bounds (OOB) issue reported by syzbot [1].\n\nAdded a check for the number of single data URB frames when calculating\nthe number of frames to prevent [1].\n\n[1]\nBUG: KASAN: slab-out-of-bounds in copy_to_urb+0x261/0x460 sound/usb/pcm.c:1487\nWrite of size 264 at addr ffff88804337e800 by task syz.0.17/5506\nCall Trace:\n copy_to_urb+0x261/0x460 sound/usb/pcm.c:1487\n prepare_playback_urb+0x953/0x13d0 sound/usb/pcm.c:1611\n prepare_outbound_urb+0x377/0xc50 sound/usb/endpoint.c:333"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/pcm.c"],"versions":[{"version":"02c56650f3c118d3752122996d96173d26bb13aa","lessThan":"480a1490c595a242f27493a4544b3efb21b29f6a","status":"affected","versionType":"git"},{"version":"5ef30e443e6d3654cccecec99cf481a69a0a6d3b","lessThan":"ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41","status":"affected","versionType":"git"},{"version":"99703c921864a318e3e8aae74fde071b1ff35bea","lessThan":"282aba56713bbc58155716b55ca7222b2d9cf3c8","status":"affected","versionType":"git"},{"version":"2d50acd7dbd0682a56968ad9551341d7fc5b6eaf","lessThan":"c4dc012b027c9eb101583011089dea14d744e314","status":"affected","versionType":"git"},{"version":"aba41867dd66939d336fdf604e4d73b805d8039f","lessThan":"e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360","status":"affected","versionType":"git"},{"version":"d288dc74f8cf95cb7ae0aaf245b7128627a49bf3","lessThan":"d67dde02049e632ba58d3c44a164a74b6a737154","status":"affected","versionType":"git"},{"version":"f0bd62b64016508938df9babe47f65c2c727d25c","lessThan":"62932d9ed639a9fa71b4ac1a56766a4b43abb7e4","status":"affected","versionType":"git"},{"version":"f0bd62b64016508938df9babe47f65c2c727d25c","lessThan":"ef5749ef8b307bf8717945701b1b79d036af0a15","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/usb/pcm.c"],"versions":[{"version":"5.8","status":"affected"},{"version":"0","lessThan":"5.8","status":"unaffected","versionType":"semver"},{"version":"4.4.230","lessThanOrEqual":"4.4.*","status":"unaffected","versionType":"semver"},{"version":"4.9.230","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.188","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.132","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.51","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.7.8","lessThanOrEqual":"5.7.*","status":"unaffected","versionType":"semver"},{"version":"6.18.10","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","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":"4.4.229","versionEndExcluding":"4.4.230"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.229","versionEndExcluding":"4.9.230"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.186","versionEndExcluding":"4.14.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.130","versionEndExcluding":"4.19.132"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.49","versionEndExcluding":"5.4.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7.6","versionEndExcluding":"5.7.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.18.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/480a1490c595a242f27493a4544b3efb21b29f6a"},{"url":"https://git.kernel.org/stable/c/ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41"},{"url":"https://git.kernel.org/stable/c/282aba56713bbc58155716b55ca7222b2d9cf3c8"},{"url":"https://git.kernel.org/stable/c/c4dc012b027c9eb101583011089dea14d744e314"},{"url":"https://git.kernel.org/stable/c/e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360"},{"url":"https://git.kernel.org/stable/c/d67dde02049e632ba58d3c44a164a74b6a737154"},{"url":"https://git.kernel.org/stable/c/62932d9ed639a9fa71b4ac1a56766a4b43abb7e4"},{"url":"https://git.kernel.org/stable/c/ef5749ef8b307bf8717945701b1b79d036af0a15"}],"title":"ALSA: usb-audio: Prevent excessive number of frames","x_generator":{"engine":"bippy-1.2.0"}}}}