{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74263","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.877Z","datePublished":"2026-08-15T05:57:39.660Z","dateUpdated":"2026-08-17T05:16:05.593Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:16:05.593Z"},"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":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/t7xx/t7xx_port_wwan.c"],"versions":[{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","lessThan":"7edd4db82f9429591de10be4c904c817f12ba029","status":"affected","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","lessThan":"112490467586146d323cb7230b1d72137e36900c","status":"affected","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","lessThan":"f7aebaee2961bfcb86f282202d3dbd9b69db1a7c","status":"affected","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","lessThan":"4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095","status":"affected","versionType":"git"},{"version":"36bd28c1cb0dbf48645cfe43159907fb3253b33a","lessThan":"05f789fa90d95d5771230e78453cedff2486039d","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/t7xx/t7xx_port_wwan.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"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"}]}]}],"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"}}}}