// For flags

CVE-2024-36477

tpm_tis_spi: Account for SPI header when allocating TPM SPI xfer buffer

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

In the Linux kernel, the following vulnerability has been resolved:

tpm_tis_spi: Account for SPI header when allocating TPM SPI xfer buffer

The TPM SPI transfer mechanism uses MAX_SPI_FRAMESIZE for computing the
maximum transfer length and the size of the transfer buffer. As such, it
does not account for the 4 bytes of header that prepends the SPI data
frame. This can result in out-of-bounds accesses and was confirmed with
KASAN.

Introduce SPI_HDRSIZE to account for the header and use to allocate the
transfer buffer.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tpm_tis_spi: Cuenta para el encabezado SPI al asignar el búfer de transferencia TPM SPI El mecanismo de transferencia TPM SPI utiliza MAX_SPI_FRAMESIZE para calcular la longitud máxima de transferencia y el tamaño del búfer de transferencia. Como tal, no tiene en cuenta los 4 bytes del encabezado que antepone el marco de datos SPI. Esto puede resultar en accesos fuera de los límites y fue confirmado con KASAN. Introduzca SPI_HDRSIZE para tener en cuenta el encabezado y utilícelo para asignar el búfer de transferencia.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-06-21 CVE Reserved
  • 2024-06-21 CVE Published
  • 2024-06-25 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
CAPEC
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"
 >= 6.6 < 6.6.33
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.6.33"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 6.6 < 6.9.4
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.9.4"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 6.6 < 6.10
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.10"
en
Affected