CVE-2026-74452 Affecting linux-6.12 package, versions <6.12.107-1~deb12u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.14% (5th percentile)

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  • Snyk IDSNYK-ECHOLATEST-LINUX612-19964145
  • published20 Sept 2026
  • disclosed15 Aug 2026

Introduced: 15 Aug 2026

CVE-2026-74452  (opens in a new tab)

How to fix?

Upgrade Echo:latest linux-6.12 to version 6.12.107-1~deb12u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

drm/panthor: reject firmware sections with oversized data

In panthor_fw_load_section_entry(), the data size to copy is calculated without validating it against the allocated section_size:

section-&gt;data.size = hdr.data.end - hdr.data.start;

If a crafted firmware sets data.size larger than the allocated memory, this could cause a heap buffer overflow in panthor_fw_init_section_mem()

memcpy(section-&gt;mem-&gt;kmap, section-&gt;data.buf, section-&gt;data.size);

Additionally, if the section->data.size exceeds the BO size, could this memset underflow the size calculation, leading to a massive out-of-bounds zeroing of kernel memory?

memset(section-&gt;mem-&gt;kmap + section-&gt;data.size, 0,
       panthor_kernel_bo_size(section-&gt;mem) - section-&gt;data.size);

Reject section entries whose initial data is larger than the section size.

CVSS Base Scores

version 3.1