{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47236","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-04-10T18:59:19.531Z","datePublished":"2024-05-21T14:19:37.724Z","dateUpdated":"2025-05-04T07:06:52.921Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:06:52.921Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: cdc_eem: fix tx fixup skb leak\n\nwhen usbnet transmit a skb, eem fixup it in eem_tx_fixup(),\nif skb_copy_expand() failed, it return NULL,\nusbnet_start_xmit() will have no chance to free original skb.\n\nfix it by free orginal skb in eem_tx_fixup() first,\nthen check skb clone status, if failed, return NULL to usbnet."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/cdc_eem.c"],"versions":[{"version":"9f722c0978b04acba209f8ca1896ad05814bc3a3","lessThan":"f12554b0ff639e74612cc01b3b4a049e098d2d65","status":"affected","versionType":"git"},{"version":"9f722c0978b04acba209f8ca1896ad05814bc3a3","lessThan":"14184ec5c958b589ba934da7363a2877879204df","status":"affected","versionType":"git"},{"version":"9f722c0978b04acba209f8ca1896ad05814bc3a3","lessThan":"1bcacd6088d61c0ac6a990d87975600a81f3247e","status":"affected","versionType":"git"},{"version":"9f722c0978b04acba209f8ca1896ad05814bc3a3","lessThan":"f4e6a7f19c82f39b1803e91c54718f0d7143767d","status":"affected","versionType":"git"},{"version":"9f722c0978b04acba209f8ca1896ad05814bc3a3","lessThan":"81de2ed06df8b5451e050fe6a318af3263dbff3f","status":"affected","versionType":"git"},{"version":"9f722c0978b04acba209f8ca1896ad05814bc3a3","lessThan":"05b2b9f7d24b5663d9b47427fe1555bdafd3ea02","status":"affected","versionType":"git"},{"version":"9f722c0978b04acba209f8ca1896ad05814bc3a3","lessThan":"b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88","status":"affected","versionType":"git"},{"version":"9f722c0978b04acba209f8ca1896ad05814bc3a3","lessThan":"c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7","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/usb/cdc_eem.c"],"versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","status":"unaffected","versionType":"semver"},{"version":"4.4.274","lessThanOrEqual":"4.4.*","status":"unaffected","versionType":"semver"},{"version":"4.9.274","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.238","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.196","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.128","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.46","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.12.13","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","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":"2.6.30","versionEndExcluding":"4.4.274"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.9.274"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.14.238"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.19.196"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.4.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.10.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.12.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/f12554b0ff639e74612cc01b3b4a049e098d2d65"},{"url":"https://git.kernel.org/stable/c/14184ec5c958b589ba934da7363a2877879204df"},{"url":"https://git.kernel.org/stable/c/1bcacd6088d61c0ac6a990d87975600a81f3247e"},{"url":"https://git.kernel.org/stable/c/f4e6a7f19c82f39b1803e91c54718f0d7143767d"},{"url":"https://git.kernel.org/stable/c/81de2ed06df8b5451e050fe6a318af3263dbff3f"},{"url":"https://git.kernel.org/stable/c/05b2b9f7d24b5663d9b47427fe1555bdafd3ea02"},{"url":"https://git.kernel.org/stable/c/b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88"},{"url":"https://git.kernel.org/stable/c/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7"}],"title":"net: 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