{"cve":"CVE-2024-56532","nvd":{"published":"2024-12-27T14:15:32.640","modified":"2026-06-17T08:12:19.360","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: us122l: Use snd_card_free_when_closed() at disconnection\n\nThe USB disconnect callback is supposed to be short and not too-long\nwaiting.  OTOH, the current code uses snd_card_free() at\ndisconnection, but this waits for the close of all used fds, hence it\ncan take long.  It eventually blocks the upper layer USB ioctls, which\nmay trigger a soft lockup.\n\nAn easy workaround is to replace snd_card_free() with\nsnd_card_free_when_closed().  This variant returns immediately while\nthe release of resources is done asynchronously by the card device\nrelease at the last close.\n\nThe loop of us122l->mmap_count check is dropped as well.  The check is\nuseless for the asynchronous operation with *_when_closed().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-667"],"references":["https://git.kernel.org/stable/c/020cbc4d7414f0962004213e2b7bc5cc607e9ec7","https://git.kernel.org/stable/c/2938dd2648522336133c151dd67bb9bf01cbd390","https://git.kernel.org/stable/c/75f418b249d84021865eaa59515d3ed9b75ce4d6","https://git.kernel.org/stable/c/9a48bd2184b142c92a4e17eac074c61fcf975bc9","https://git.kernel.org/stable/c/9b27924dc8d7f8a8c35e521287d4ccb9a006e597"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:57:56.913276502+00:00"},"epss":{"cve":"CVE-2024-56532","score":0.00217,"percentile":0.12162,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}