{"id":"CVE-2026-74263","summary":"net: wwan: t7xx: check skb_clone in control TX","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: t7xx: check skb_clone in control TX\n\nt7xx_port_ctrl_tx() clones each skb fragment before passing it to the\nport transmit path. The clone is used immediately to set cloned-\u003elen, so\nan skb_clone() failure results in a NULL pointer dereference.\n\nCheck the clone before using it. If previous fragments were already\nqueued, preserve the driver's existing partial-write behavior by\nreturning the number of bytes submitted so far.","modified":"2026-08-18T03:31:00.447447581Z","published":"2026-08-15T05:57:39.660Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74263.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/05f789fa90d95d5771230e78453cedff2486039d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/112490467586146d323cb7230b1d72137e36900c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7edd4db82f9429591de10be4c904c817f12ba029"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f7aebaee2961bfcb86f282202d3dbd9b69db1a7c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74263.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74263"},{"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":"36bd28c1cb0dbf48645cfe43159907fb3253b33a"},{"fixed":"7edd4db82f9429591de10be4c904c817f12ba029"},{"fixed":"112490467586146d323cb7230b1d72137e36900c"},{"fixed":"f7aebaee2961bfcb86f282202d3dbd9b69db1a7c"},{"fixed":"4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095"},{"fixed":"05f789fa90d95d5771230e78453cedff2486039d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74263.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.0"},{"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-2026-74263.json"}}],"schema_version":"1.9.0"}