{"schema":"threatline.record/2","record":{"id":"CVE-2026-98238","aliases":[],"summary":"net: wwan: t7xx: validate the netif index in t7xx_ccmni_recv_skb()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: t7xx: validate the netif index in t7xx_ccmni_recv_skb()\n\nThe netif index carried in the DPMAIF PIT header is five bits wide,\nbut ccmni_inst[] only has room for NIC_DEV_MAX (21) entries.\nt7xx_ccmni_recv_skb() indexes the array without a bounds check, so\nindexes 21 to 31 read past it.  The out-of-bounds value lands in the\ncallback table that follows the array, which is never NULL, so the\nexisting !ccmni check does not catch it and the driver dereferences\nwhatever sits there as a struct t7xx_ccmni.\n\nDrop the skb when the index is out of range.\n\n\nVerified in a QEMU guest with a fault injector setting the netif\nindex to 25: the unpatched driver reads a value past ccmni_inst[],\nwhich lands in the callback table, and dereferences it far enough to\nqueue the skb.  With this check the packet is dropped.  Well-formed\ntraffic on index 0 is unaffected.\n\nChanges in v2: none.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98238","source_modified_at":"2026-10-19T09:16:09.924Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"05d19bf500f8281f574713479b04679fa226d0a3","lessThan":"7c2fe308bda5a7e6222d7f0c3c311991372baab4","status":"affected","versionType":"git"},{"version":"05d19bf500f8281f574713479b04679fa226d0a3","lessThan":"fba45070e25abdae08bcaebfadeef050dc39e208","status":"affected","versionType":"git"},{"version":"05d19bf500f8281f574713479b04679fa226d0a3","lessThan":"e1b0609b1a40da03e385be290853a604eb4c3fb9","status":"affected","versionType":"git"},{"version":"05d19bf500f8281f574713479b04679fa226d0a3","lessThan":"9dbf13de4edff6fbc1f7ad9c4040326b6ed599ad","status":"affected","versionType":"git"},{"version":"05d19bf500f8281f574713479b04679fa226d0a3","lessThan":"d28aa2de9654e8024922775520a2665e00c04ad5","status":"affected","versionType":"git"},{"version":"05d19bf500f8281f574713479b04679fa226d0a3","lessThan":"c7ead9704249d57d4693a04697e3bbd285138fa9","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98238","source_modified_at":"2026-10-19T09:16:09.924Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.19","status":"affected"},{"version":"0","lessThan":"5.19","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98238","source_modified_at":"2026-10-19T09:16:09.924Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"7c2fe308bda5a7e6222d7f0c3c311991372baab4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98238","source_modified_at":"2026-10-19T09:16:09.924Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"9dbf13de4edff6fbc1f7ad9c4040326b6ed599ad","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.0018,"percentile":0.07202,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:45:09.953Z","modified_at":"2026-10-19T09:16:09.924Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98238","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:16:09.924Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98238","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/7c2fe308bda5a7e6222d7f0c3c311991372baab4"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/fba45070e25abdae08bcaebfadeef050dc39e208"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e1b0609b1a40da03e385be290853a604eb4c3fb9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9dbf13de4edff6fbc1f7ad9c4040326b6ed599ad"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d28aa2de9654e8024922775520a2665e00c04ad5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c7ead9704249d57d4693a04697e3bbd285138fa9"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:16:09.924Z","content_hash":"d8ef184a4f239f9d9b6e67ed2a253523a3f00a946413a6a6890fc75ee976ac6e"}}