{"id":"CVE-2026-74263","state":"PUBLISHED","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.","publishedAt":"2026-08-15T05:57:39.660Z","updatedAt":"2026-08-17T05:16:05.593Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"7edd4db82f9429591de10be4c904c817f12ba029","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"112490467586146d323cb7230b1d72137e36900c","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"f7aebaee2961bfcb86f282202d3dbd9b69db1a7c","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"05f789fa90d95d5771230e78453cedff2486039d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/t7xx/t7xx_port_wwan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/t7xx/t7xx_port_wwan.c"]}],"references":["https://git.kernel.org/stable/c/7edd4db82f9429591de10be4c904c817f12ba029","https://git.kernel.org/stable/c/112490467586146d323cb7230b1d72137e36900c","https://git.kernel.org/stable/c/f7aebaee2961bfcb86f282202d3dbd9b69db1a7c","https://git.kernel.org/stable/c/4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095","https://git.kernel.org/stable/c/05f789fa90d95d5771230e78453cedff2486039d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74263.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74263","state":"PUBLISHED","datePublished":"2026-08-15T05:57:39.660Z","dateUpdated":"2026-08-17T05:16:05.593Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.877Z"},"containers":{"cna":{"title":"net: wwan: t7xx: check skb_clone in control TX","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"7edd4db82f9429591de10be4c904c817f12ba029","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"112490467586146d323cb7230b1d72137e36900c","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"f7aebaee2961bfcb86f282202d3dbd9b69db1a7c","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","status":"affected","lessThan":"05f789fa90d95d5771230e78453cedff2486039d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/t7xx/t7xx_port_wwan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/t7xx/t7xx_port_wwan.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:16:05.593Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}