{"id":"CVE-2026-72017","state":"PUBLISHED","title":"net: macb: drop in-flight Tx SKBs on close","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: drop in-flight Tx SKBs on close\n\nThe MACB driver has since forever leaked the outgoing SKBs that\nhave not yet been marked as completed. They live in queue->tx_skb\nwhich gets freed without remorse nor checking.\n\nmacb_free_consistent() gets called in a few codepaths, but only close will\ntrigger the added expressions. In macb_open() and macb_alloc_consistent()\nfailure cases, queues' tx_skb just got allocated and are empty.","publishedAt":"2026-08-15T05:51:44.698Z","updatedAt":"2026-08-23T12:46:26.593Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"6124bd785073659c99385094657b77382ebce11b","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"26b131b2d5b55a81ef6182769d28105a870c0eb2","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"109241d9880488aafd8e104832b4d4859ad57244","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"27f575836cfebbf872dec020428742b10650a955","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/cadence/macb_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.20","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.148","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","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/ethernet/cadence/macb_main.c"]}],"references":["https://git.kernel.org/stable/c/0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655","https://git.kernel.org/stable/c/6124bd785073659c99385094657b77382ebce11b","https://git.kernel.org/stable/c/2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4","https://git.kernel.org/stable/c/26b131b2d5b55a81ef6182769d28105a870c0eb2","https://git.kernel.org/stable/c/109241d9880488aafd8e104832b4d4859ad57244","https://git.kernel.org/stable/c/27f575836cfebbf872dec020428742b10650a955"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72017.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72017","state":"PUBLISHED","datePublished":"2026-08-15T05:51:44.698Z","dateUpdated":"2026-08-23T12:46:26.593Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.900Z"},"containers":{"cna":{"title":"net: macb: drop in-flight Tx SKBs on close","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: drop in-flight Tx SKBs on close\n\nThe MACB driver has since forever leaked the outgoing SKBs that\nhave not yet been marked as completed. They live in queue->tx_skb\nwhich gets freed without remorse nor checking.\n\nmacb_free_consistent() gets called in a few codepaths, but only close will\ntrigger the added expressions. In macb_open() and macb_alloc_consistent()\nfailure cases, queues' tx_skb just got allocated and are empty."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"6124bd785073659c99385094657b77382ebce11b","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"26b131b2d5b55a81ef6182769d28105a870c0eb2","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"109241d9880488aafd8e104832b4d4859ad57244","versionType":"git"},{"version":"89e5785fc8a6b9eafd37f2318a9a76d479c796be","status":"affected","lessThan":"27f575836cfebbf872dec020428742b10650a955","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/cadence/macb_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.20","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.148","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","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/ethernet/cadence/macb_main.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655"},{"url":"https://git.kernel.org/stable/c/6124bd785073659c99385094657b77382ebce11b"},{"url":"https://git.kernel.org/stable/c/2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4"},{"url":"https://git.kernel.org/stable/c/26b131b2d5b55a81ef6182769d28105a870c0eb2"},{"url":"https://git.kernel.org/stable/c/109241d9880488aafd8e104832b4d4859ad57244"},{"url":"https://git.kernel.org/stable/c/27f575836cfebbf872dec020428742b10650a955"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-23T12:46:26.593Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.20","versionEndExcluding":"6.1.184"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.20","versionEndExcluding":"6.6.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.20","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.20","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.20","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.20","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}