{"id":"CVE-2021-47236","details":"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.","modified":"2026-03-23T05:10:53.040890Z","published":"2024-05-21T15:15:12.857Z","related":["ALSA-2024:4352","SUSE-SU-2024:1979-1","SUSE-SU-2024:1983-1","SUSE-SU-2024:2010-1","SUSE-SU-2024:2183-1","SUSE-SU-2024:2184-1","SUSE-SU-2024:2185-1","SUSE-SU-2025:01995-1"],"references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/81de2ed06df8b5451e050fe6a318af3263dbff3f"},{"type":"FIX","url":"https://git.kernel.org/stable/c/b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88"},{"type":"FIX","url":"https://git.kernel.org/stable/c/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7"},{"type":"FIX","url":"https://git.kernel.org/stable/c/f12554b0ff639e74612cc01b3b4a049e098d2d65"},{"type":"FIX","url":"https://git.kernel.org/stable/c/f4e6a7f19c82f39b1803e91c54718f0d7143767d"},{"type":"FIX","url":"https://git.kernel.org/stable/c/05b2b9f7d24b5663d9b47427fe1555bdafd3ea02"},{"type":"FIX","url":"https://git.kernel.org/stable/c/14184ec5c958b589ba934da7363a2877879204df"},{"type":"FIX","url":"https://git.kernel.org/stable/c/1bcacd6088d61c0ac6a990d87975600a81f3247e"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47236.json","unresolved_ranges":[{"events":[{"introduced":"2.6.30"},{"fixed":"4.4.274"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.274"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.238"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.196"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.128"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.46"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.12.13"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc3"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc4"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc5"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc6"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}