5.5

CVE-2021-47236

net: cdc_eem: fix tx fixup skb leak

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.30 < 4.4.274
Linux ≫ Linux Kernel Version >= 4.5 < 4.9.274
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.238
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.196
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.128
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.46
Linux ≫ Linux Kernel Version >= 5.11 < 5.12.13
Linux ≫ Linux Kernel Version 5.13 Update rc1
Linux ≫ Linux Kernel Version 5.13 Update rc2
Linux ≫ Linux Kernel Version 5.13 Update rc3
Linux ≫ Linux Kernel Version 5.13 Update rc4
Linux ≫ Linux Kernel Version 5.13 Update rc5
Linux ≫ Linux Kernel Version 5.13 Update rc6
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.134
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/05b2b9f7d24b5663d9b47427fe1555bdafd3ea02
Patch
https://git.kernel.org/stable/c/14184ec5c958b589ba934da7363a2877879204df
Patch
https://git.kernel.org/stable/c/1bcacd6088d61c0ac6a990d87975600a81f3247e
Patch
https://git.kernel.org/stable/c/81de2ed06df8b5451e050fe6a318af3263dbff3f
Patch
https://git.kernel.org/stable/c/b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88
Patch
https://git.kernel.org/stable/c/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7
Patch
https://git.kernel.org/stable/c/f12554b0ff639e74612cc01b3b4a049e098d2d65
Patch
https://git.kernel.org/stable/c/f4e6a7f19c82f39b1803e91c54718f0d7143767d
Patch