{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31650", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.128Z", "datePublished": "2026-04-24T14:45:03.210Z", "dateUpdated": "2026-04-24T14:45:03.210Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-24T14:45:03.210Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: vub300: fix use-after-free on disconnect\n\nThe vub300 driver maintains an explicit reference count for the\ncontroller and its driver data and the last reference can in theory be\ndropped after the driver has been unbound.\n\nThis specifically means that the controller allocation must not be\ndevice managed as that can lead to use-after-free.\n\nNote that the lifetime is currently also incorrectly tied the parent USB\ndevice rather than interface, which can lead to memory leaks if the\ndriver is unbound without its device being physically disconnected (e.g.\non probe deferral).\n\nFix both issues by reverting to non-managed allocation of the controller."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mmc/host/vub300.c"], "versions": [{"version": "dcfdd698dc521c6046e9b80c16281575efb25d23", "lessThan": "ea7468f61be033f4e18b95f2912010ed1d175d75", "status": "affected", "versionType": "git"}, {"version": "dcfdd698dc521c6046e9b80c16281575efb25d23", "lessThan": "ef0448c569b37ceabdd038e9faa311e5179127b0", "status": "affected", "versionType": "git"}, {"version": "dcfdd698dc521c6046e9b80c16281575efb25d23", "lessThan": "8f4d20a710225ec7a565f6a0459862d3b1f32330", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mmc/host/vub300.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.23", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.13", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.17", "versionEndExcluding": "6.18.23"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.19.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ea7468f61be033f4e18b95f2912010ed1d175d75"}, {"url": "https://git.kernel.org/stable/c/ef0448c569b37ceabdd038e9faa311e5179127b0"}, {"url": "https://git.kernel.org/stable/c/8f4d20a710225ec7a565f6a0459862d3b1f32330"}], "title": "mmc: vub300: fix use-after-free on disconnect", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: vub300: fix use-after-free on disconnect\n\nThe vub300 driver maintains an explicit reference count for the\ncontroller and its driver data and the last reference can in theory be\ndropped after the driver has been unbound.\n\nThis specifically means that the controller allocation must not be\ndevice managed as that can lead to use-after-free.\n\nNote that the lifetime is currently also incorrectly tied the parent USB\ndevice rather than interface, which can lead to memory leaks if the\ndriver is unbound without its device being physically disconnected (e.g.\non probe deferral).\n\nFix both issues by reverting to non-managed allocation of the controller."}], "id": "CVE-2026-31650", "lastModified": "2026-04-24T17:51:40.810", "metrics": {}, "published": "2026-04-24T15:16:44.473", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8f4d20a710225ec7a565f6a0459862d3b1f32330"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ea7468f61be033f4e18b95f2912010ed1d175d75"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ef0448c569b37ceabdd038e9faa311e5179127b0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: mmc: vub300: fix use-after-free on disconnect", "id": "2461437", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461437"}, "csaw": false, "cwe": "CWE-911", "details": ["A flaw was found in the `vub300` driver within the Linux kernel. This vulnerability is a memory management issue where the system attempts to use memory that has already been freed, known as a 'use-after-free' error. This can happen when the driver is disconnected, potentially leading to system crashes or a denial of service. Additionally, the driver's incorrect handling of memory resources can cause memory leaks, which might degrade system performance over time."], "name": "CVE-2026-31650", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31650\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31650\nhttps://lore.kernel.org/linux-cve-announce/2026042400-CVE-2026-31650-fb3f@gregkh/T"]}

{}