{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31701", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.132Z", "datePublished": "2026-05-01T13:56:00.869Z", "dateUpdated": "2026-05-11T22:14:04.126Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:14:04.126Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: caiaq: take a reference on the USB device in create_card()\n\nThe caiaq driver stores a pointer to the parent USB device in\ncdev->chip.dev but never takes a reference on it. The card's\nprivate_free callback, snd_usb_caiaq_card_free(), can run\nasynchronously via snd_card_free_when_closed() after the USB\ndevice has already been disconnected and freed, so any access to\ncdev->chip.dev in that path dereferences a freed usb_device.\n\nOn top of the refcounting issue, the current card_free implementation\ncalls usb_reset_device(cdev->chip.dev). A reset in a free callback\nis inappropriate: the device is going away, the call takes the\ndevice lock in a teardown context, and the reset races with the\ndisconnect path that the callback is already cleaning up after.\n\nTake a reference on the USB device in create_card() with\nusb_get_dev(), drop it with usb_put_dev() in the free callback,\nand remove the usb_reset_device() call."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/usb/caiaq/device.c"], "versions": [{"version": "4507a8b9b30344c5ddd8219945f446d47e966a6d", "lessThan": "f6634af5de728a46792f674a66d7843570cb68f7", "status": "affected", "versionType": "git"}, {"version": "a3f9314752dbb6f6aa1f0f2b4c58243bda800738", "lessThan": "1d9be95aee6c6246a21752e60c9519902649f482", "status": "affected", "versionType": "git"}, {"version": "b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c", "lessThan": "6473ed16df1fe88051140611b3eb9a49be7f429e", "status": "affected", "versionType": "git"}, {"version": "b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c", "lessThan": "59b622a043cffc58b7638cd85ae6c30a0904f8e6", "status": "affected", "versionType": "git"}, {"version": "b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c", "lessThan": "80bb50e2d459213cccff3111d5ef98ed4238c0d5", "status": "affected", "versionType": "git"}, {"version": "3993edf44d3df7b6e8c753eac6ac8783473fcbab", "status": "affected", "versionType": "git"}, {"version": "ebad462eec93b0f701dfe4de98990e7355283801", "status": "affected", "versionType": "git"}, {"version": "4dd821dcbfcecf7af6a08370b0b217cde2818acf", "status": "affected", "versionType": "git"}, {"version": "cadf1d8e9ddcd74584ec961aeac14ac549b261d8", "status": "affected", "versionType": "git"}, {"version": "237f3faf0177bdde728fa3106d730d806436aa4d", "status": "affected", "versionType": "git"}, {"version": "dd0de8cb708951cebf727aa045e8242ba651bb52", "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/caiaq/device.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.84", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.25", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.2", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1-rc1", "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": "6.6.64", "versionEndExcluding": "6.6.136"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.2", "versionEndExcluding": "6.12.84"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.25"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.0.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.1-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.325"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.287"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.231"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.174"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.120"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11.11"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f6634af5de728a46792f674a66d7843570cb68f7"}, {"url": "https://git.kernel.org/stable/c/1d9be95aee6c6246a21752e60c9519902649f482"}, {"url": "https://git.kernel.org/stable/c/6473ed16df1fe88051140611b3eb9a49be7f429e"}, {"url": "https://git.kernel.org/stable/c/59b622a043cffc58b7638cd85ae6c30a0904f8e6"}, {"url": "https://git.kernel.org/stable/c/80bb50e2d459213cccff3111d5ef98ed4238c0d5"}], "title": "ALSA: caiaq: take a reference on the USB device in create_card()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: ALSA: caiaq: take a reference on the USB device in create_card()", "id": "2464380", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464380"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's Advanced Linux Sound Architecture (ALSA) caiaq driver. This vulnerability arises from improper handling of Universal Serial Bus (USB) device references. When a USB device is disconnected, the driver may attempt to access memory that has already been freed, a condition known as use-after-free. This can lead to system instability, crashes, or potentially allow a local attacker to execute arbitrary code."], "name": "CVE-2026-31701", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31701\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31701\nhttps://lore.kernel.org/linux-cve-announce/2026050119-CVE-2026-31701-fb7c@gregkh/T"], "threat_severity": "Moderate"}

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