{"cve":"CVE-2026-72149","nvd":{"published":"2026-08-15T06:21:32.610","modified":"2026-10-16T19:17:11.910","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: tegra: Fix burst size calculation\n\nCurrently, the Tegra GPC DMA hardware requires the transfer length to\nbe a multiple of the max burst size configured for the channel. When a\nclient requests a transfer where the length is not evenly divisible by\nthe configured max burst size, the DMA hangs with partial burst at\nthe end.\n\nFix this by reducing the burst size to the largest power-of-2 value\nthat evenly divides the transfer length. For example, a 40-byte\ntransfer with a 16-byte max burst will now use an 8-byte burst\n(40 / 8 = 5 complete bursts) instead of causing a hang.\n\nThis issue was observed with the PL011 UART driver where TX DMA\ntransfers of arbitrary lengths were stuck.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://git.kernel.org/stable/c/4651df83b6c796daead3447e8fd874322918ee4f","https://git.kernel.org/stable/c/6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1","https://git.kernel.org/stable/c/735951baa311c66353405dcac39375dd66441db0","https://git.kernel.org/stable/c/7926c1e4be86379945fb5f168888ac4d2aaf6c91","https://git.kernel.org/stable/c/8f0f5de1091119679d87f60dfb1acbff4b2a0ed3"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-72149","score":0.00647,"percentile":0.50704,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}