CVE-2022-48637
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedApr 28, 2024
First seenApr 28, 2024
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel5.15.71, 5.19.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.14 ≤ v < 5.15.71, 5.16 ≤ v < 5.19.12, 6.0 | 5.15.71, 5.19.12 |
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