vulnerability
Red Hat: CVE-2021-47236: kernel: net: cdc_eem: fix tx fixup skb leak (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | 2024-05-21 | 2024-07-03 | 2024-07-09 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
2024-05-21
Added
2024-07-03
Modified
2024-07-09
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.
Solution(s)
redhat-upgrade-kernelredhat-upgrade-kernel-rt
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