CVE-2026-74452
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->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->mem->kmap, section->data.buf, section->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->mem->kmap + section->data.size, 0,
panthor_kernel_bo_size(section->mem) - section->data.size);
Reject section entries whose initial data is larger than the section size.
CSIRTS triage
- What
- Multiple vulnerabilities in the Linux kernel that may result in privilege escalation, denial of service, or information disclosure.
- Who is affected
- Debian systems running vulnerable Linux kernel versions.
- Urgency
- Multiple kernel vulnerabilities enabling privilege escalation and information leaks require urgent patching to protect system and data security.
- Action
- Apply the Debian security update DSA-6466-1 to the Linux kernel immediately.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
Advisory coverage (2)
- unknownDSA-6466-1 linux - security updatedebian · 2026-08-25
- highCVE-2026-74452: In the Linux kernel, the following vulnerability has been resolved: drm/panthor: reject firmwa…nvd · 2026-08-15
External references
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