Ubuntu.comUB:CVE-2021-47236CVE-2021-47236
In the Linux kernel, the following vulnerability has been resolved: net:
cdc_eem: fix tx fixup skb leak when usbnet transmit a skb, eem fixup it in
eem_tx_fixup(), if skb_copy_expand() failed, it return NULL,
usbnet_start_xmit() will have no chance to free original skb. fix it by
free orginal skb in eem_tx_fixup() first, then check skb clone status, if
failed, return NULL to usbnet.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
References
git.kernel.org/linus/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7 (5.13-rc7)
git.kernel.org/stable/c/05b2b9f7d24b5663d9b47427fe1555bdafd3ea02
git.kernel.org/stable/c/14184ec5c958b589ba934da7363a2877879204df
git.kernel.org/stable/c/1bcacd6088d61c0ac6a990d87975600a81f3247e
git.kernel.org/stable/c/81de2ed06df8b5451e050fe6a318af3263dbff3f
git.kernel.org/stable/c/b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88
git.kernel.org/stable/c/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7
git.kernel.org/stable/c/f12554b0ff639e74612cc01b3b4a049e098d2d65
git.kernel.org/stable/c/f4e6a7f19c82f39b1803e91c54718f0d7143767d
launchpad.net/bugs/cve/CVE-2021-47236
nvd.nist.gov/vuln/detail/CVE-2021-47236
security-tracker.debian.org/tracker/CVE-2021-47236
www.cve.org/CVERecord?id=CVE-2021-47236
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