CVE-2024-36477

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxa86a42ac2bd652fdc7836a9d880c306a2485c142 < 1547183852dcdfcc25878db7dd3620509217b0cdaffected
LinuxLinuxa86a42ac2bd652fdc7836a9d880c306a2485c142 < de13c56f99477b56980c7e00b09c776d16b7563daffected
LinuxLinuxa86a42ac2bd652fdc7836a9d880c306a2485c142 < 195aba96b854dd664768f382cd1db375d8181f88affected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.6.33 <= 6.6.*unaffected
LinuxLinux6.9.4 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References