CVE-2024-46794
x86/tdx: Fix data leak in mmio_read()
Severity Score
"-"
*CVSS v-
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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. ]
*Credits:
N/A
CVSS Scores
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Scope
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* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2024-09-11 CVE Reserved
- 2024-09-18 CVE Published
- 2024-09-18 CVE Updated
- ---------- EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/31d58c4e557d46fa7f8557714250fb6f89c941ae | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.1.110 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.1.110" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.6.51 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.6.51" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.10.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.10.10" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.11" | en |
Affected
| ||||||