CVE-2026-74452
drm/panthor: reject firmware sections with oversized data
Description
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.
INFO
Published Date :
Aug. 15, 2026, 1:17 p.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel.
- Reject firmware sections with oversized data.
- Validate data size against allocated section size.
- Prevent heap buffer overflows and memory zeroing issues.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74452.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74452 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74452
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74452 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74452 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '0e57165ca025a67d8dfd17efd2765fdd4925fdab', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '2a761b9be5863e1d26a584f0c2d1e114a684ed9a', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '7f4674d986c15c74327cb6ac6e2e2afecf061e04', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': 'a3caaa06809248b996254be5b47e10804a3494e2', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/panthor/panthor_fw.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/panthor/panthor_fw.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '0e57165ca025a67d8dfd17efd2765fdd4925fdab', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '2a761b9be5863e1d26a584f0c2d1e114a684ed9a', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '7f4674d986c15c74327cb6ac6e2e2afecf061e04', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': 'a3caaa06809248b996254be5b47e10804a3494e2', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/panthor/panthor_fw.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/panthor/panthor_fw.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '0e57165ca025a67d8dfd17efd2765fdd4925fdab', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '2a761b9be5863e1d26a584f0c2d1e114a684ed9a', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': '7f4674d986c15c74327cb6ac6e2e2afecf061e04', 'versionType': 'git'}, {'status': 'affected', 'version': '2718d91816eeed03c09c8abe872e45f59078768c', 'lessThan': 'a3caaa06809248b996254be5b47e10804a3494e2', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/panthor/panthor_fw.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/panthor/panthor_fw.c'], 'defaultStatus': 'affected'}] Added Description 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. Added Reference https://git.kernel.org/stable/c/0e57165ca025a67d8dfd17efd2765fdd4925fdab Added Reference https://git.kernel.org/stable/c/2a761b9be5863e1d26a584f0c2d1e114a684ed9a Added Reference https://git.kernel.org/stable/c/7f4674d986c15c74327cb6ac6e2e2afecf061e04 Added Reference https://git.kernel.org/stable/c/a3caaa06809248b996254be5b47e10804a3494e2