CVE-2026-46048

{"id": "CVE-2026-46048", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "493b3a682ededc804555755f5d2193201339612d", "lessThan": "c874db8a1d2f9f08161470d00cfe8db2f5cca2cc", "versionType": "git"}, {"status": "affected", "version": "dbcf7588e8dea017ddb3f18ec2766f7d2e5f2a0e", "lessThan": "6fa8dff64fb6c401ced40a05797b327659317498", "versionType": "git"}, {"status": "affected", "version": "ac7345f68cda6989016d85d63f7b244c064aa8f6", "lessThan": "a8d907acc3e5a078c2e5637ff60c30c6d2ddc23a", "versionType": "git"}, {"status": "affected", "version": "f6634af5de728a46792f674a66d7843570cb68f7", "lessThan": "50c6a1f05973f56d23280c9d7645a7a5734e0907", "versionType": "git"}, {"status": "affected", "version": "1d9be95aee6c6246a21752e60c9519902649f482", "lessThan": "da3b8fd6a202d94fef11a443abc9171c52426a1c", "versionType": "git"}, {"status": "affected", "version": "6473ed16df1fe88051140611b3eb9a49be7f429e", "lessThan": "6153878c5255bb69b7d0868105ca078ef13cbcf8", "versionType": "git"}, {"status": "affected", "version": "59b622a043cffc58b7638cd85ae6c30a0904f8e6", "lessThan": "21ca595aafa40d3ac70eab1f4cb62cc00ca21657", "versionType": "git"}, {"status": "affected", "version": "80bb50e2d459213cccff3111d5ef98ed4238c0d5", "lessThan": "7a5f1cd22d47f8ca4b760b6334378ae42c1bd24b", "versionType": "git"}], "programFiles": ["sound/usb/caiaq/device.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.6.136", "lessThan": "6.6.140", "versionType": "semver"}, {"status": "affected", "version": "6.12.84", "lessThan": "6.12.86", "versionType": "semver"}, {"status": "affected", "version": "6.18.25", "lessThan": "6.18.27", "versionType": "semver"}, {"status": "affected", "version": "7.0.2", "lessThan": "7.0.4", "versionType": "semver"}], "programFiles": ["sound/usb/caiaq/device.c"], "defaultStatus": "unaffected"}]}], "published": "2026-05-27T14:17:24.310", "references": [{"url": "https://git.kernel.org/stable/c/21ca595aafa40d3ac70eab1f4cb62cc00ca21657", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/50c6a1f05973f56d23280c9d7645a7a5734e0907", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6153878c5255bb69b7d0868105ca078ef13cbcf8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6fa8dff64fb6c401ced40a05797b327659317498", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7a5f1cd22d47f8ca4b760b6334378ae42c1bd24b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a8d907acc3e5a078c2e5637ff60c30c6d2ddc23a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c874db8a1d2f9f08161470d00cfe8db2f5cca2cc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/da3b8fd6a202d94fef11a443abc9171c52426a1c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: caiaq: fix usb_dev refcount leak on probe failure\n\ncreate_card() takes a reference on the USB device with usb_get_dev()\nand stores the matching usb_put_dev() in card_free(), which is\ninstalled as the snd_card's ->private_free destructor.\n\nHowever, ->private_free is only assigned near the end of init_card(),\nafter several failure points (usb_set_interface(), EP type checks,\nusb_submit_urb(), the EP1_CMD_GET_DEVICE_INFO exchange, and its\ntimeout). When any of those fail, init_card() returns an error to\nsnd_probe(), which calls snd_card_free(card). Because ->private_free\nis still NULL, card_free() never runs, the usb_get_dev() reference\nis not dropped, and the struct usb_device leaks along with its\ndescriptor allocations and device_private.\n\nsyzbot reproduces this with a malformed UAC3 device whose only valid\naltsetting is 0; init_card()'s usb_set_interface(usb_dev, 0, 1) call\nfails with -EIO and triggers the leak.\n\nMove the ->private_free assignment into create_card(), immediately\nafter usb_get_dev(), so that every error path reaching snd_card_free()\nbalances the reference. card_free()'s callees (snd_usb_caiaq_input_free,\nfree_urbs, kfree) already tolerate the partially-initialized state\nbecause the chip private area is zero-initialized by snd_card_new()."}], "lastModified": "2026-06-17T10:52:57.833", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0FA1B944-78D8-45D7-A8B0-0B41685B6E78", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.6.136"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "68464024-93DF-45F6-A661-D6D7CB575D06", "versionEndExcluding": "6.12.86", "versionStartIncluding": "6.12.84"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C56DF34F-56C3-4E5D-9497-241EAA95B3EC", "versionEndExcluding": "6.18.27", "versionStartIncluding": "6.18.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "78E1B212-E5FF-4F46-B84D-FD98FCE5162B", "versionEndExcluding": "7.0.4", "versionStartIncluding": "7.0.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}