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That is, the check itself is valid and snd_BUG_ON()\nshould be dropped from there. Otherwise it's confusing as if it were\na real bug, as recently syzbot stumbled on it."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: usb-audio: Se omite snd_BUG_ON() de snd_usbmidi_output_open(). snd_usbmidi_output_open() tiene una comprobaci\u00f3n del puerto nulo con snd_BUG_ON(). Se us\u00f3 snd_BUG_ON() porque esto no deber\u00eda haber ocurrido, pero en realidad, el puerto nulo puede detectarse cuando el dispositivo proporciona una configuraci\u00f3n de endpoint no v\u00e1lida en el descriptor, por lo que el controlador omite la asignaci\u00f3n. Es decir, la comprobaci\u00f3n en s\u00ed es v\u00e1lida y snd_BUG_ON() deber\u00eda omitirse. De lo contrario, es confuso, como si se tratara de un error real, como lo detect\u00f3 syzbot recientemente."}], "id": "CVE-2022-49772", "lastModified": "2025-12-23T14:16:28.407", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-05-01T15:16:00.347", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5df"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()", "id": "2363422", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363422"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.1", "cvss3_scoring_vector": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()\nsnd_usbmidi_output_open() has a check of the NULL port with\nsnd_BUG_ON(). snd_BUG_ON() was used as this shouldn't have happened,\nbut in reality, the NULL port may be seen when the device gives an\ninvalid endpoint setup at the descriptor, hence the driver skips the\nallocation. That is, the check itself is valid and snd_BUG_ON()\nshould be dropped from there. Otherwise it's confusing as if it were\na real bug, as recently syzbot stumbled on it."], "name": "CVE-2022-49772", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49772\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49772\nhttps://lore.kernel.org/linux-cve-announce/2025050116-CVE-2022-49772-912e@gregkh/T"], "statement": "The snd_usbmidi_output_open() function previously included a snd_BUG_ON() assertion for a NULL port pointer. However, such a condition can occur legitimately when a device exposes an invalid USB descriptor (e.g., endpoint setup is missing or incorrect). This patch replaces the BUG_ON with a graceful return of -ENXIO, avoiding misleading kernel warnings or panics. The change prevents unnecessary kernel warning output in cases of non-malicious, invalid USB MIDI device configurations. This improves robustness and avoids confusing debug messages when such devices are connected.", "threat_severity": "Low"}

{"created": "2025-06-24T09:51:39.486679+00:00", "updated": "2025-06-24T09:51:39.486730+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}