CVE-2021-47236
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9f722c0978b04acba209f8ca1896ad05814bc3a3 < f12554b0ff639e74612cc01b3b4a049e098d2d65 | affected |
| Linux | Linux | 9f722c0978b04acba209f8ca1896ad05814bc3a3 < 14184ec5c958b589ba934da7363a2877879204df | affected |
| Linux | Linux | 9f722c0978b04acba209f8ca1896ad05814bc3a3 < 1bcacd6088d61c0ac6a990d87975600a81f3247e | affected |
| Linux | Linux | 9f722c0978b04acba209f8ca1896ad05814bc3a3 < f4e6a7f19c82f39b1803e91c54718f0d7143767d | affected |
| Linux | Linux | 9f722c0978b04acba209f8ca1896ad05814bc3a3 < 81de2ed06df8b5451e050fe6a318af3263dbff3f | affected |
| Linux | Linux | 9f722c0978b04acba209f8ca1896ad05814bc3a3 < 05b2b9f7d24b5663d9b47427fe1555bdafd3ea02 | affected |
| Linux | Linux | 9f722c0978b04acba209f8ca1896ad05814bc3a3 < b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88 | affected |
| Linux | Linux | 9f722c0978b04acba209f8ca1896ad05814bc3a3 < c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7 | affected |
| Linux | Linux | 2.6.30 | affected |
| Linux | Linux | 0 < 2.6.30 | unaffected |
| Linux | Linux | 4.4.274 <= 4.4.* | unaffected |
| Linux | Linux | 4.9.274 <= 4.9.* | unaffected |
| Linux | Linux | 4.14.238 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.196 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.128 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.46 <= 5.10.* | unaffected |
| Linux | Linux | 5.12.13 <= 5.12.* | unaffected |
| Linux | Linux | 5.13 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
CVE Program Container
Additional References
- https://git.kernel.org/stable/c/f12554b0ff639e74612cc01b3b4a049e098d2d65
- https://git.kernel.org/stable/c/14184ec5c958b589ba934da7363a2877879204df
- https://git.kernel.org/stable/c/1bcacd6088d61c0ac6a990d87975600a81f3247e
- https://git.kernel.org/stable/c/f4e6a7f19c82f39b1803e91c54718f0d7143767d
- https://git.kernel.org/stable/c/81de2ed06df8b5451e050fe6a318af3263dbff3f
- https://git.kernel.org/stable/c/05b2b9f7d24b5663d9b47427fe1555bdafd3ea02
- https://git.kernel.org/stable/c/b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88
- https://git.kernel.org/stable/c/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7
References
- https://git.kernel.org/stable/c/f12554b0ff639e74612cc01b3b4a049e098d2d65
- https://git.kernel.org/stable/c/14184ec5c958b589ba934da7363a2877879204df
- https://git.kernel.org/stable/c/1bcacd6088d61c0ac6a990d87975600a81f3247e
- https://git.kernel.org/stable/c/f4e6a7f19c82f39b1803e91c54718f0d7143767d
- https://git.kernel.org/stable/c/81de2ed06df8b5451e050fe6a318af3263dbff3f
- https://git.kernel.org/stable/c/05b2b9f7d24b5663d9b47427fe1555bdafd3ea02
- https://git.kernel.org/stable/c/b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88
- https://git.kernel.org/stable/c/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.