CVE-2024-36477
tpm_tis_spi: Account for SPI header when allocating TPM SPI xfer buffer
Reported by linux · Published June 21, 2024
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux_kernel | linux | 6.9.4, 6.6.33 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | a86a42ac2bd652fdc7836a9d880c306a2485c142, a86a42ac2bd652fdc7836a9d880c306a2485c142, a86a42ac2bd652fdc7836a9d880c306a2485c142 |
| Linux | Linux | 6.6, 0, 6.6.33 |
| linux | linux_kernel | 6.6, 6.6, 6.6 |
| Linux | Linux | *, 6.6, 0 |
Timeline
- Jun 21, 2024 CVE Published
- Jun 22, 2024 EPSS Score (30 in total, the first dated here)
- Oct 4, 2024 Coalition ESS Score (11 in total, the first dated here)
- Jan 10, 2026 Security Advisory (114 in total, the first dated here)
- May 28, 2026 Distribution Patch (94 in total, the first dated here)
- Aug 4, 2026 CVE Updated
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