CVE-2026-72149 | BDVDB-2026-359603 Detail
LinuxLinux
Description#
In the Linux kernel, the following vulnerability has been resolved: dmaengine: tegra: Fix burst size calculation Currently, the Tegra GPC DMA hardware requires the transfer length to be a multiple of the max burst size configured for the channel. When a client requests a transfer where the length is not evenly divisible by the configured max burst size, the DMA hangs with partial burst at the end. Fix this by reducing the burst size to the largest power-of-2 value that evenly divides the transfer length. For example, a 40-byte transfer with a 16-byte max burst will now use an 8-byte burst (40 / 8 = 5 complete bursts) instead of causing a hang. This issue was observed with the PL011 UART driver where TX DMA transfers of arbitrary lengths were stuck.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/735951baa311c66353405dcac39375dd66441db0
- https://git.kernel.org/stable/c/8f0f5de1091119679d87f60dfb1acbff4b2a0ed3
- https://git.kernel.org/stable/c/a3b76b54e06d73166af4d1a284a0e0711889060c
- https://git.kernel.org/stable/c/7926c1e4be86379945fb5f168888ac4d2aaf6c91
- https://git.kernel.org/stable/c/6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1
- https://git.kernel.org/stable/c/4651df83b6c796daead3447e8fd874322918ee4f
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.