Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xsk: Fix corrupted packets for XDP_SHARED_UMEM Fix an issue in XDP_SHARED_UMEM mode together with aligned mode where packets are corrupted for the second and any further sockets bound to the same umem. In other words, this does not affect the first socket bound to the umem. The culprit for this bug is that the initialization of the DMA addresses for the pre-populated xsk buffer pool entries was not performed for any socket but the first one bound to the umem. Only the linear array of DMA addresses was populated. Fix this by populating the DMA addresses in the xsk buffer pool for every socket bound to the same umem.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.16, < 5.19.8 |
References
- https://git.kernel.org/stable/c/2c75891d56ab6fe5ba0d415bfad91d514a4027cdPatch
- https://git.kernel.org/stable/c/58ca14ed98c87cfe0d1408cc65a9745d9e9b7a56Patch
FAQ
What is CVE-2022-49972?
CVE-2022-49972 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: xsk: Fix corrupted packets for XDP_SHARED_UMEM Fix an issue in XDP_SHARED_UMEM mode together with aligned mode where packets are c...
How severe is CVE-2022-49972?
CVE-2022-49972 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49972?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.