CVE-2025-39794

ARM: tegra: Use I/O memcpy to write to IRAM

MEDIUM

5.5

CVSS Score

Published: September 12, 2025 at 03:59 PM UTC

Updated: October 19, 2026 at 09:10 PM UTC

3 products affected across 3 vendorsLinux KernelDebian LinuxSIMATIC CN 4100

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

3.4 ≤ v < 5.4.2975.11 ≤ v < 5.15.1905.16 ≤ v < 6.1.1495.5 ≤ v < 5.10.2416.13 ≤ v < 6.15.116.16 ≤ v < 6.16.26.2 ≤ v < 6.6.1036.7 ≤ v < 6.12.433.4b36ab9754efbd7429d214b3b03dc9843882571bd

Vendor states this is fixed in 2499b0ac908eefbb8a217aae609b7a5b5174f330 (fixed)

Vendor states this is fixed in 30ef45b89a5961cdecf907ecff1ef3374d1de510 (fixed)

Vendor states this is fixed in 387435f4833f97aabfd74434ee526e31e8a626ea (fixed)

Vendor states this is fixed in 398e67e0f5ae04b29bcc9cbf342e339fe9d3f6f1 (fixed)

Vendor states this is fixed in 46b3a7a3a36d5833f14914d1b95c69d28c6a76d6 (fixed)

Vendor states this is fixed in 75a3bdfeed2f129a2c7d9fd7779382b78e35b014 (fixed)

Vendor states this is fixed in 96d6605bf0561d6e568b1dd9265a0f73b5b94f51 (fixed)

Vendor states this is fixed in 9b0b3b5e5cae95e09bf0ae4a9bcb58d9b6d57f87 (fixed)

Vendor states this is fixed in b28c1a14accc79ead1e87bbdae53309da60be1e7 (fixed)

Vendor states this is fixed in 3.4 (unaffected)

Vendor states this is fixed in 5.10.241 (unaffected)

Vendor states this is fixed in 5.15.190 (unaffected)

Vendor states this is fixed in 5.4.297 (unaffected)

Vendor states this is fixed in 6.1.149 (unaffected)

Vendor states this is fixed in 6.12.43 (unaffected)

Vendor states this is fixed in 6.15.11 (unaffected)

Vendor states this is fixed in 6.16.2 (unaffected)

Vendor states this is fixed in 6.17 (unaffected)

Vendor states this is fixed in 6.6.103 (unaffected)

SIMATIC CN 4100 · Siemens

60%

v < V5.0

Affected range stops below V5.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references