3.3

CVE-2024-46794

x86/tdx: Fix data leak in mmio_read()

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. ]
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version <= 5.19
Linux ≫ Linux Kernel Version >= 6.1 < 6.1.110
Linux ≫ Linux Kernel Version >= 6.6 < 6.6.51
Linux ≫ Linux Kernel Version >= 6.10 < 6.10.10
Linux ≫ Linux Kernel Version6.11 Updaterc1
Linux ≫ Linux Kernel Version6.11 Updaterc2
Linux ≫ Linux Kernel Version6.11 Updaterc3
Linux ≫ Linux Kernel Version6.11 Updaterc4
Linux ≫ Linux Kernel Version6.11 Updaterc5
Linux ≫ Linux Kernel Version6.11 Updaterc6
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.098
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 3.3 1.8 1.4
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7
Patch
https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa
Patch
https://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661
Patch
https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7
Patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html