CVE-2026-72149: Linux kernel · dmaengine: tegra: Fix burst size calculation
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.5 High · fixed in 7.0.0-1014.14~24.04.1 : patch Linux kernel soon.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 7.0.0-1014.14~24.04.1, 7.0.0-1017.17~24.04.1, 7.0.0-1016.16~24.04.1 +12
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied to affected linux-hwe-edge kernel versions to fix the burst size calculation in the Tegra GPC DMA driver. Applying the official kernel updates that include this fix will resolve the issue. No additional mitigation is required beyond updating to a fixed kernel version.
Description
A vulnerability in the Linux kernel's Tegra GPC DMA driver caused the DMA engine to hang when transfer lengths were not multiples of the configured max burst size. This was fixed by adjusting the burst size to the largest power-of-2 divisor of the transfer length, preventing hangs during DMA transfers such as those seen with the PL011 UART driver. The issue affects specific linux-hwe-edge kernel versions and has a CVSS score of 7.5, indicating a medium severity denial-of-service impact. A patch is available to resolve this issue.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72149 (opens in a new tab)
- git.kernel.org/stable/c/4651df83b6c796daead3447e8fd874322918ee4f (opens in a new tab)
- git.kernel.org/stable/c/6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1 (opens in a new tab)
- git.kernel.org/stable/c/735951baa311c66353405dcac39375dd66441db0 (opens in a new tab)
- git.kernel.org/stable/c/7926c1e4be86379945fb5f168888ac4d2aaf6c91 (opens in a new tab)
- git.kernel.org/stable/c/8f0f5de1091119679d87f60dfb1acbff4b2a0ed3 (opens in a new tab)
- git.kernel.org/stable/c/a3b76b54e06d73166af4d1a284a0e0711889060c (opens in a new tab)
- ubuntu.com/security/CVE-2026-72149 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72149 (opens in a new tab)
- git.kernel.org/linus/4651df83b6c796daead3447e8fd874322918ee4f (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8889-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8886-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-3 (opens in a new tab)