{"cve":"CVE-2023-52806","nvd":{"published":"2024-05-21T16:15:18.963","modified":"2026-06-17T06:43:37.530","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: hda: Fix possible null-ptr-deref when assigning a stream\n\nWhile AudioDSP drivers assign streams exclusively of HOST or LINK type,\nnothing blocks a user to attempt to assign a COUPLED stream. As\nsupplied substream instance may be a stub, what is the case when\ncode-loading, such scenario ends with null-ptr-deref.","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-476"],"references":["https://git.kernel.org/stable/c/2527775616f3638f4fd54649eba8c7b84d5e4250","https://git.kernel.org/stable/c/25354bae4fc310c3928e8a42fda2d486f67745d7","https://git.kernel.org/stable/c/43b91df291c8802268ab3cfd8fccfdf135800ed4","https://git.kernel.org/stable/c/4a320da7f7cbdab2098b103c47f45d5061f42edd","https://git.kernel.org/stable/c/631a96e9eb4228ff75fce7e72d133ca81194797e"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2023-52806","score":0.00257,"percentile":0.17356,"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."]}