Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dma-direct: Leak pages on dma_set_decrypted() failure On TDX it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. DMA could free decrypted/shared pages if dma_set_decrypted() fails. This should be a rare case. Just leak the pages in this case instead of freeing them.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.1.86 |
References
- https://git.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66aPatch
- https://git.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9Patch
- https://git.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934cPatch
- https://git.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcafPatch
- https://git.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66aPatch
- https://git.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9Patch
- https://git.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934cPatch
- https://git.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcafPatch
FAQ
What is CVE-2024-35939?
CVE-2024-35939 is a vulnerability with a CVSS score of 7.1 (HIGH). In the Linux kernel, the following vulnerability has been resolved: dma-direct: Leak pages on dma_set_decrypted() failure On TDX it is possible for the untrusted host to cause set_memory_encrypted()...
How severe is CVE-2024-35939?
CVE-2024-35939 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-35939?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.