{"api_version":"1","generated_at":"2026-08-22T18:40:13+00:00","cve":"CVE-2026-74678","urls":{"html":"https://cve.report/CVE-2026-74678","api":"https://cve.report/api/cve/CVE-2026-74678.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74678","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74678"},"summary":{"title":"net: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()\n\nWhen the interface has NETIF_F_SG enabled and skb_linearize() fails in\nax88179_tx_fixup(), the function returns NULL without freeing the skb.\n\nusbnet_start_xmit() treats a NULL return from tx_fixup() as a drop\n(info->flags does not set FLAG_MULTI_PACKET for this driver), jumping\nto the \"drop\" label where it does `if (skb) dev_kfree_skb_any(skb)`.\nBecause tx_fixup() returned NULL, the local skb variable in\nusbnet_start_xmit() is NULL, so the original skb is never freed — a\nmemory leak on every TX frame whose linearization fails (i.e. under\nmemory pressure).\n\nFree the skb before returning, matching the error handling already used\nfor the pskb_expand_head() failure path in the same function.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:41","updated_at":"2026-08-22 16:16:41"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b","name":"https://git.kernel.org/stable/c/83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4039cd807a5a46dc5f7618fffae926b8ad8455eb","name":"https://git.kernel.org/stable/c/4039cd807a5a46dc5f7618fffae926b8ad8455eb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1f428e30947395d9b9aacee03e25a4e6cfcad7a4","name":"https://git.kernel.org/stable/c/1f428e30947395d9b9aacee03e25a4e6cfcad7a4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1c63303659a2264bd55d9813df74cb4caeed5922","name":"https://git.kernel.org/stable/c/1c63303659a2264bd55d9813df74cb4caeed5922","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/58733b1dd46bb231d9d279c132a20ee46da1b664","name":"https://git.kernel.org/stable/c/58733b1dd46bb231d9d279c132a20ee46da1b664","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2be5091fa693b9119ad25a8bb8c149d236a23ade","name":"https://git.kernel.org/stable/c/2be5091fa693b9119ad25a8bb8c149d236a23ade","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74678","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74678","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 1c63303659a2264bd55d9813df74cb4caeed5922 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 2be5091fa693b9119ad25a8bb8c149d236a23ade git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 58733b1dd46bb231d9d279c132a20ee46da1b664 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 4039cd807a5a46dc5f7618fffae926b8ad8455eb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 1f428e30947395d9b9aacee03e25a4e6cfcad7a4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.17","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.17 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.183 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.152 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.104 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.45 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.9 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/usb/ax88179_178a.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b","status":"affected","version":"16b1c4e01c89ba07367461e0bc4cb84993c2d027","versionType":"git"},{"lessThan":"1c63303659a2264bd55d9813df74cb4caeed5922","status":"affected","version":"16b1c4e01c89ba07367461e0bc4cb84993c2d027","versionType":"git"},{"lessThan":"2be5091fa693b9119ad25a8bb8c149d236a23ade","status":"affected","version":"16b1c4e01c89ba07367461e0bc4cb84993c2d027","versionType":"git"},{"lessThan":"58733b1dd46bb231d9d279c132a20ee46da1b664","status":"affected","version":"16b1c4e01c89ba07367461e0bc4cb84993c2d027","versionType":"git"},{"lessThan":"4039cd807a5a46dc5f7618fffae926b8ad8455eb","status":"affected","version":"16b1c4e01c89ba07367461e0bc4cb84993c2d027","versionType":"git"},{"lessThan":"1f428e30947395d9b9aacee03e25a4e6cfcad7a4","status":"affected","version":"16b1c4e01c89ba07367461e0bc4cb84993c2d027","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/usb/ax88179_178a.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.17"},{"lessThan":"5.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.152","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.104","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.45","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.183","versionStartIncluding":"5.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.152","versionStartIncluding":"5.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.104","versionStartIncluding":"5.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"5.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"5.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"5.17","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()\n\nWhen the interface has NETIF_F_SG enabled and skb_linearize() fails in\nax88179_tx_fixup(), the function returns NULL without freeing the skb.\n\nusbnet_start_xmit() treats a NULL return from tx_fixup() as a drop\n(info->flags does not set FLAG_MULTI_PACKET for this driver), jumping\nto the \"drop\" label where it does `if (skb) dev_kfree_skb_any(skb)`.\nBecause tx_fixup() returned NULL, the local skb variable in\nusbnet_start_xmit() is NULL, so the original skb is never freed — a\nmemory leak on every TX frame whose linearization fails (i.e. under\nmemory pressure).\n\nFree the skb before returning, matching the error handling already used\nfor the pskb_expand_head() failure path in the same function."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:32:46.765Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b"},{"url":"https://git.kernel.org/stable/c/1c63303659a2264bd55d9813df74cb4caeed5922"},{"url":"https://git.kernel.org/stable/c/2be5091fa693b9119ad25a8bb8c149d236a23ade"},{"url":"https://git.kernel.org/stable/c/58733b1dd46bb231d9d279c132a20ee46da1b664"},{"url":"https://git.kernel.org/stable/c/4039cd807a5a46dc5f7618fffae926b8ad8455eb"},{"url":"https://git.kernel.org/stable/c/1f428e30947395d9b9aacee03e25a4e6cfcad7a4"}],"title":"net: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74678","datePublished":"2026-08-22T15:32:46.765Z","dateReserved":"2026-08-15T05:44:03.925Z","dateUpdated":"2026-08-22T15:32:46.765Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:41","lastModifiedDate":"2026-08-22 16:16:41","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74678","Ordinal":"1","Title":"net: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()","CVE":"CVE-2026-74678","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74678","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()\n\nWhen the interface has NETIF_F_SG enabled and skb_linearize() fails in\nax88179_tx_fixup(), the function returns NULL without freeing the skb.\n\nusbnet_start_xmit() treats a NULL return from tx_fixup() as a drop\n(info->flags does not set FLAG_MULTI_PACKET for this driver), jumping\nto the \"drop\" label where it does `if (skb) dev_kfree_skb_any(skb)`.\nBecause tx_fixup() returned NULL, the local skb variable in\nusbnet_start_xmit() is NULL, so the original skb is never freed — a\nmemory leak on every TX frame whose linearization fails (i.e. under\nmemory pressure).\n\nFree the skb before returning, matching the error handling already used\nfor the pskb_expand_head() failure path in the same function.","Type":"Description","Title":"net: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()"}]}}}