CVE-2024-46794

CVE-2024-46794: falha em Linux

x86/tdx: Fix data leak in mmio_read()

Publicada em · Atualizada em

3Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackepss 0.2%
probabilidade de exploração
0.2%top 91% das CVEs
exploração observada
nãonenhuma fonte reporta
In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix data leak in mmio_read() The mmio_read() function makes a TDVMCALL to retrieve MMIO data for an address from the VMM. Sean noticed that mmio_read() unintentionally exposes the value of an initialized variable (val) on the stack to the VMM. This variable is only needed as an output value. It did not need to be passed to the VMM in the first place. Do not send the original value of *val to the VMM. [ dhansen: clarify what 'val' is used for. ]
Produtos afetados
Linux · Linux
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Referências
https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fahttps://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html