{"api_version":"1","generated_at":"2026-08-16T06:00:10+00:00","cve":"CVE-2026-74263","urls":{"html":"https://cve.report/CVE-2026-74263","api":"https://cve.report/api/cve/CVE-2026-74263.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74263","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74263"},"summary":{"title":"net: wwan: t7xx: check skb_clone in control TX","description":"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->len, 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:25","updated_at":"2026-08-15 06:22:25"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/112490467586146d323cb7230b1d72137e36900c","name":"https://git.kernel.org/stable/c/112490467586146d323cb7230b1d72137e36900c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/05f789fa90d95d5771230e78453cedff2486039d","name":"https://git.kernel.org/stable/c/05f789fa90d95d5771230e78453cedff2486039d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f7aebaee2961bfcb86f282202d3dbd9b69db1a7c","name":"https://git.kernel.org/stable/c/f7aebaee2961bfcb86f282202d3dbd9b69db1a7c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7edd4db82f9429591de10be4c904c817f12ba029","name":"https://git.kernel.org/stable/c/7edd4db82f9429591de10be4c904c817f12ba029","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095","name":"https://git.kernel.org/stable/c/4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74263","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74263","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36bd28c1cb0dbf48645cfe43159907fb3253b33a 7edd4db82f9429591de10be4c904c817f12ba029 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36bd28c1cb0dbf48645cfe43159907fb3253b33a 112490467586146d323cb7230b1d72137e36900c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36bd28c1cb0dbf48645cfe43159907fb3253b33a f7aebaee2961bfcb86f282202d3dbd9b69db1a7c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36bd28c1cb0dbf48645cfe43159907fb3253b33a 4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36bd28c1cb0dbf48645cfe43159907fb3253b33a 05f789fa90d95d5771230e78453cedff2486039d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"74263","cve":"CVE-2026-74263","epss":"0.001680000","percentile":"0.064410000","score_date":"2026-08-15","updated_at":"2026-08-16 00:00:30"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wwan/t7xx/t7xx_port_wwan.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7edd4db82f9429591de10be4c904c817f12ba029","status":"affected","version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","versionType":"git"},{"lessThan":"112490467586146d323cb7230b1d72137e36900c","status":"affected","version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","versionType":"git"},{"lessThan":"f7aebaee2961bfcb86f282202d3dbd9b69db1a7c","status":"affected","version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","versionType":"git"},{"lessThan":"4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095","status":"affected","version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","versionType":"git"},{"lessThan":"05f789fa90d95d5771230e78453cedff2486039d","status":"affected","version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wwan/t7xx/t7xx_port_wwan.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"6.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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->len, 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."}],"providerMetadata":{"dateUpdated":"2026-08-15T05:57:39.660Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/7edd4db82f9429591de10be4c904c817f12ba029"},{"url":"https://git.kernel.org/stable/c/112490467586146d323cb7230b1d72137e36900c"},{"url":"https://git.kernel.org/stable/c/f7aebaee2961bfcb86f282202d3dbd9b69db1a7c"},{"url":"https://git.kernel.org/stable/c/4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095"},{"url":"https://git.kernel.org/stable/c/05f789fa90d95d5771230e78453cedff2486039d"}],"title":"net: wwan: t7xx: check skb_clone in control TX","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74263","datePublished":"2026-08-15T05:57:39.660Z","dateReserved":"2026-08-15T05:44:03.877Z","dateUpdated":"2026-08-15T05:57:39.660Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:25","lastModifiedDate":"2026-08-15 06:22:25","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74263","Ordinal":"1","Title":"net: wwan: t7xx: check skb_clone in control TX","CVE":"CVE-2026-74263","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74263","Ordinal":"1","NoteData":"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->len, 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.","Type":"Description","Title":"net: wwan: t7xx: check skb_clone in control TX"}]}}}