# CVE-2025-39794: ARM: tegra: Use I/O memcpy to write to IRAM

CVE-2025-39794 is fixed in 32 products on 1 platform, first by DEBIAN-CVE-2025-39794, released September 12, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-39794
- Priority: High
- CVSS: 7.0 (Moderate)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 12, 2025
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-39794

## Description

In the Linux kernel, the following vulnerability has been resolved:  ARM: tegra: Use I/O memcpy to write to IRAM  Kasan crashes the kernel trying to check boundaries when using the normal memcpy.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | dtb-aarch64 opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-64kb opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-64kb sles 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-64kb sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-azure opensuse-leap 15.6 | 6.4.0-150600.8.55.1 | [SUSE-SU-2025:4128-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4128-1.md) | Nov 18, 2025 |
| Linux | kernel-azure sles 15.6 | 6.4.0-150600.8.55.1 | [SUSE-SU-2025:4128-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4128-1.md) | Nov 18, 2025 |
| Linux | kernel-azure sles 15.7 | 6.4.0-150700.20.18.1 | [SUSE-SU-2025:4132-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4132-1.md) | Nov 18, 2025 |
| Linux | kernel-debug opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-default opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-default sles 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-default sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-default-base opensuse-leap 15.6 | 6.4.0-150600.23.78.1.150600.12.34.2 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-default-base sles 15.6 | 6.4.0-150600.23.78.1.150600.12.34.2 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-default-base sles 15.7 | 6.4.0-150700.53.22.1.150700.17.15.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-docs opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-docs sles 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-docs sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-kvmsmall opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-livepatch-SLE15-SP6-RT_Update_17 sles 15.6 | 1-150600.1.3.1 | [SUSE-SU-2025:4301-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4301-1.md) | Nov 28, 2025 |
| Linux | kernel-livepatch-SLE15-SP6_Update_17 sles 15.6 | 1-150600.13.5.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-livepatch-SLE15-SP7-RT_Update_6 sles 15.7 | 1-150700.1.3.1 | [SUSE-SU-2025:4141-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4141-1.md) | Nov 19, 2025 |
| Linux | kernel-livepatch-SLE15-SP7_Update_6 sles 15.7 | 1-150700.15.3.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-obs-build opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-obs-build sles 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-obs-build sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-obs-qa opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-rt opensuse-leap 15.6 | 6.4.0-150600.10.58.1 | [SUSE-SU-2025:4301-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4301-1.md) | Nov 28, 2025 |
| Linux | kernel-rt_debug opensuse-leap 15.6 | 6.4.0-150600.10.58.1 | [SUSE-SU-2025:4301-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4301-1.md) | Nov 28, 2025 |
| Linux | kernel-source opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-source sles 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-source sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-source-azure opensuse-leap 15.6 | 6.4.0-150600.8.55.1 | [SUSE-SU-2025:4128-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4128-1.md) | Nov 18, 2025 |
| Linux | kernel-source-azure sles 15.6 | 6.4.0-150600.8.55.1 | [SUSE-SU-2025:4128-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4128-1.md) | Nov 18, 2025 |
| Linux | kernel-source-azure sles 15.7 | 6.4.0-150700.20.18.1 | [SUSE-SU-2025:4132-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4132-1.md) | Nov 18, 2025 |
| Linux | kernel-source-rt opensuse-leap 15.6 | 6.4.0-150600.10.58.1 | [SUSE-SU-2025:4301-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4301-1.md) | Nov 28, 2025 |
| Linux | kernel-syms opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-syms sles 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-syms sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-syms-azure opensuse-leap 15.6 | 6.4.0-150600.8.55.1 | [SUSE-SU-2025:4128-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4128-1.md) | Nov 18, 2025 |
| Linux | kernel-syms-azure sles 15.6 | 6.4.0-150600.8.55.1 | [SUSE-SU-2025:4128-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4128-1.md) | Nov 18, 2025 |
| Linux | kernel-syms-azure sles 15.7 | 6.4.0-150700.20.18.1 | [SUSE-SU-2025:4132-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4132-1.md) | Nov 18, 2025 |
| Linux | kernel-syms-rt opensuse-leap 15.6 | 6.4.0-150600.10.58.1 | [SUSE-SU-2025:4301-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4301-1.md) | Nov 28, 2025 |
| Linux | kernel-uek ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 |
| Linux | kernel-uek-container ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 |
| Linux | kernel-uek-container-debug ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 |
| Linux | kernel-uek-debug ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 |
| Linux | kernel-uek-devel ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 |
| Linux | kernel-uek-doc ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 |
| Linux | kernel-uek-tools ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 |
| Linux | kernel-zfcpdump opensuse-leap 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-zfcpdump sles 15.6 | 6.4.0-150600.23.78.1 | [SUSE-SU-2025:4140-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4140-1.md) | Nov 19, 2025 |
| Linux | kernel-zfcpdump sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.153-1 | [DEBIAN-CVE-2025-39794](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39794.md) | Sep 12, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.12.43-1 | [DEBIAN-CVE-2025-39794](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39794.md) | Sep 12, 2025 |
| Linux | linux Debian 14 | 6.16.3-1 | [DEBIAN-CVE-2025-39794](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39794.md) | Sep 12, 2025 |

---

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