{"id":"CVE-2026-80779","summary":"net/ionic: avoid OOB TX partner lookup for hwstamp RXQ","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ionic: avoid OOB TX partner lookup for hwstamp RXQ\n\nThe dedicated hardware timestamp RX queue is allocated with q-\u003eindex\nequal to lif-\u003eionic-\u003enrxqs_per_lif. The normal txqcqs array only\ncontains the regular queue pairs, so using that index to set rxq-\u003epartner\ncan read one entry past txqcqs[] and then write through the derived\npointer.\nOnly link RX/TX partners for normal queue-pair indexes. Leave the hwstamp\nRX queue unpaired, and make the XDP_TX path abort cleanly if an RX queue\nhas no TX partner.","modified":"2026-09-06T03:46:15.447999166Z","published":"2026-09-04T15:12:51.103Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80779.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/39fc615e355b65b8d43be30da57aa95ae6eaf688"},{"type":"WEB","url":"https://git.kernel.org/stable/c/881a805a8029ba48c0ce81c6674910f8d83f7afb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d92255b405fb6f5acca408239ccd742e0a42c9cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ea081b4435515ac7177eb598a3c0678d1b9e7911"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f3868046e8e2e761d4d943a232bd109ff22a7d5b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80779.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80779"},{"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":"8eeed8373e1cca836799bf8e4a05cffa8e444908"},{"fixed":"881a805a8029ba48c0ce81c6674910f8d83f7afb"},{"fixed":"39fc615e355b65b8d43be30da57aa95ae6eaf688"},{"fixed":"f3868046e8e2e761d4d943a232bd109ff22a7d5b"},{"fixed":"ea081b4435515ac7177eb598a3c0678d1b9e7911"},{"fixed":"d92255b405fb6f5acca408239ccd742e0a42c9cb"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80779.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.9.0"},{"fixed":"6.12.106"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.47"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.2.0"},{"fixed":"7.2.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80779.json"}}],"schema_version":"1.9.0"}