CVE-2024-46794

Description

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. ]

Reserved 2024-09-11 | Published 2024-09-18 | Updated 2024-11-05 | Assigner Linux

Product status

Default status
unaffected

31d58c4e557d before 26c6af49d26f
affected

31d58c4e557d before ef00818c50cf
affected

31d58c4e557d before b55ce742afcb
affected

31d58c4e557d before b6fb565a2d15
affected

Default status
affected

5.19
affected

Any version before 5.19
unaffected

6.1.110
unaffected

6.6.51
unaffected

6.10.10
unaffected

6.11
unaffected

References

git.kernel.org/...c/26c6af49d26ffc377e392e30d4086db19eed0ef7

git.kernel.org/...c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7

git.kernel.org/...c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa

git.kernel.org/...c/b6fb565a2d15277896583d471b21bc14a0c99661

cve.org (CVE-2024-46794)

nvd.nist.gov (CVE-2024-46794)

Download JSON