CVE-2026-72149 (GCVE-0-2026-72149)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:53 – Updated: 2026-10-16 18:44
VLAI
Title
dmaengine: tegra: Fix burst size calculation
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 18:42 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6993 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ee17028009d49fffed8cc963455d33b1fd3f1d08 , < 735951baa311c66353405dcac39375dd66441db0 (git)
Affected: ee17028009d49fffed8cc963455d33b1fd3f1d08 , < 8f0f5de1091119679d87f60dfb1acbff4b2a0ed3 (git)
Affected: ee17028009d49fffed8cc963455d33b1fd3f1d08 , < a3b76b54e06d73166af4d1a284a0e0711889060c (git)
Affected: ee17028009d49fffed8cc963455d33b1fd3f1d08 , < 7926c1e4be86379945fb5f168888ac4d2aaf6c91 (git)
Affected: ee17028009d49fffed8cc963455d33b1fd3f1d08 , < 6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1 (git)
Affected: ee17028009d49fffed8cc963455d33b1fd3f1d08 , < 4651df83b6c796daead3447e8fd874322918ee4f (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "title": "kernel: dmaengine: tegra: Fix burst size calculation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72149.json",
      "version": "3"
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}



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