Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 56fccf21d1961a06e2a0c96ce446ebf036651062 before 4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9; affected 56fccf21d1961a06e2a0c96ce446ebf036651062 before 4031b72ca747a1e6e9ae4fa729e765b43363d66a; affected 56fccf21d1961a06e2a0c96ce446ebf036651062 before b57326c96b7bc7638aa8c44e12afa2defe0c934c; affected 56fccf21d1961a06e2a0c96ce446ebf036651062 before b9fa16949d18e06bdf728a560f5c8af56d2bdcaf; affected 91c7b0407ca6a62c095d265f76926b67bf66c026; affected 5.7.7 before 5.8 |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 6.1.86 through 6.1.*; unaffected 6.6.27 through 6.6.*; unaffected 6.8.6 through 6.8.*; unaffected 6.9 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9
- https://git.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66a
- https://git.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934c
- https://git.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcaf
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.