Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.14, < 5.15.71 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/08483e4c0c83b221b8891434a04cec405dee94a6Patch
- https://git.kernel.org/stable/c/32afa1f23e42cc635ccf4c39f24514d03d1e8338Patch
- https://git.kernel.org/stable/c/c31f26c8f69f776759cbbdfb38e40ea91aa0dd65Patch
- https://git.kernel.org/stable/c/08483e4c0c83b221b8891434a04cec405dee94a6Patch
- https://git.kernel.org/stable/c/32afa1f23e42cc635ccf4c39f24514d03d1e8338Patch
- https://git.kernel.org/stable/c/c31f26c8f69f776759cbbdfb38e40ea91aa0dd65Patch
FAQ
What is CVE-2022-48637?
CVE-2022-48637 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ownersh...
How severe is CVE-2022-48637?
CVE-2022-48637 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-48637?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.