7.5

CVE-2026-72149: dmaengine: tegra: Fix burst size calculation

Received
AliasesUBUNTU-CVE-2026-72149DEBIAN-CVE-2026-72149
Published 15-08-2026Last modified 16-10-2026

Vulnerability summary

CVE-2026-72149 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 51.1% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 05-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.65%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 10
SUSE-SU-2026:5091-1USN-8886-1USN-8887-1USN-8887-2USN-8887-3USN-8888-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.65%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.68% on 06-10-2026

06-10-202605-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu144 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ ee17028009d49fffed8cc963455d33b1fd3f1d08, < 735951baa311c66353405dcac39375dd66441db0 | ≥ ee17028009d49fffed8cc963455d33b1fd3f1d08, < 8f0f5de1091119679d87f60dfb1acbff4b2a0ed3 | ≥ ee17028009d49fffed8cc963455d33b1fd3f1d08, < a3b76b54e06d73166af4d1a284a0e0711889060c | ≥ ee17028009d49fffed8cc963455d33b1fd3f1d08, < 7926c1e4be86379945fb5f168888ac4d2aaf6c91 | ≥ ee17028009d49fffed8cc963455d33b1fd3f1d08, < 6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1 | ≥ ee17028009d49fffed8cc963455d33b1fd3f1d08, < 4651df83b6c796daead3447e8fd874322918ee4f | 5.19

3 vendors · 146 products

References

19 links
Show all 19 references