{"cve":"CVE-2026-31623","nvd":{"published":"2026-04-24T15:16:41.587","modified":"2026-06-17T10:34:06.693","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()\n\nA malicious USB device claiming to be a CDC Phonet modem can overflow\nthe skb_shared_info->frags[] array by sending an unbounded sequence of\nfull-page bulk transfers.\n\nDrop the skb and increment the length error when the frag limit is\nreached.  This matches the same fix that commit f0813bcd2d9d (\"net:\nwwan: t7xx: fix potential skb->frags overflow in RX path\") did for the\nt7xx driver.","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-120"],"references":["https://git.kernel.org/stable/c/0c5c65a17db729fc63ab656bdaaf0e675a9dbeac","https://git.kernel.org/stable/c/600dc40554dc5ad1e6f3af51f700228033f43ea7","https://git.kernel.org/stable/c/6053620fdbcd89fa7e755644efdaab78e0daaae7","https://git.kernel.org/stable/c/6807ff49bf796b3823b1e29f97b69316a40a9a94","https://git.kernel.org/stable/c/9989938d13cc5ba8447eeed5a61acfcf61bc6801"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-31623","score":0.00125,"percentile":0.02199,"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."]}