{"id":"CVE-2026-80594","summary":"Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - fix potential infinite loop in CDC union descriptor parsing\n\nThe driver parses CDC union descriptors in ims_pcu_get_cdc_union_desc()\nby iterating through the extra descriptor data. However, it does not\nverify that the bLength of each descriptor is at least 2. A malicious\ndevice could provide a descriptor with bLength = 0, leading to an\ninfinite loop in the driver.\n\nAdd a check to ensure bLength is at least 2 before proceeding with\nparsing.","modified":"2026-08-30T03:48:20.801771640Z","published":"2026-08-28T06:48:21.426Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80594.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/383934c249a9817d242d02d30bfbc8defbf0d533"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6314bd9e2a6b3362998dc85485dd4b0f133a3532"},{"type":"WEB","url":"https://git.kernel.org/stable/c/67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28"},{"type":"WEB","url":"https://git.kernel.org/stable/c/76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b847f2725ef47a26b3d01eca3d54fd811e5a544d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bbbe31486cf2d12177462e4a814244c2597c9849"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d4579af29e67ca8722db0a1194227f8015c8981d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80594.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80594"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"628329d52474323938a03826941e166bc7c8eff4"},{"fixed":"67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28"},{"fixed":"6314bd9e2a6b3362998dc85485dd4b0f133a3532"},{"fixed":"76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32"},{"fixed":"e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295"},{"fixed":"b847f2725ef47a26b3d01eca3d54fd811e5a544d"},{"fixed":"383934c249a9817d242d02d30bfbc8defbf0d533"},{"fixed":"bbbe31486cf2d12177462e4a814244c2597c9849"},{"fixed":"d4579af29e67ca8722db0a1194227f8015c8981d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80594.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80594.json"}}],"schema_version":"1.9.0"}