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CVE-2021-47236

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CVE-2021-47236

Published: May 21, 2024

Modified: May 11, 2026

PUBLISHED

Description

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.

VendorProductVersions

Linux

Linux

affected
9f722c0978b04acba209f8ca1896ad05814bc3a3 - < f12554b0ff639e74612cc01b3b4a049e098d2d65
affected
9f722c0978b04acba209f8ca1896ad05814bc3a3 - < 14184ec5c958b589ba934da7363a2877879204df
affected
9f722c0978b04acba209f8ca1896ad05814bc3a3 - < 1bcacd6088d61c0ac6a990d87975600a81f3247e
affected
9f722c0978b04acba209f8ca1896ad05814bc3a3 - < f4e6a7f19c82f39b1803e91c54718f0d7143767d
affected
9f722c0978b04acba209f8ca1896ad05814bc3a3 - < 81de2ed06df8b5451e050fe6a318af3263dbff3f

+3 more versions

Linux

Linux

affected
2.6.30
unaffected
0 - < 2.6.30
unaffected
4.4.274 - <= 4.4.*
unaffected
4.9.274 - <= 4.9.*
unaffected
4.14.238 - <= 4.14.*

+5 more versions

References

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