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Vulnerabilities CVE-2022-48637

CVE-2022-48637

High
Open
TLP:CLEAR

bnxt: prevent skb UAF after handing over to PTP worker

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Description

In the Linux kernel, the following vulnerability has been resolved: bnxt: prevent skb UAF after handing over to PTP worker When reading the timestamp is required bnxt_tx_int() hands over the ownership of the completed skb to the PTP worker. The skb should not be used afterwards, as the worker may run before the rest of our code and free the skb, leading to a use-after-free. Since dev_kfree_skb_any() accepts NULL make the loss of ownership more obvious and set skb to NULL.

Details

CVSS Score
7.8
EPSS Score
0.23%

13.6th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Apr 28, 2024
Last Modified
Aug 5, 2026
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