CVE-2026-68270
drm/sysfb: Avoid possible truncation with calculating visible size
Description
In the Linux kernel, the following vulnerability has been resolved: drm/sysfb: Avoid possible truncation with calculating visible size Calculating the visible size of the system framebuffer can result in truncation of the result. The calculation uses 32-bit arithmetics, which can overflow if the values for height and stride are large. Fix the issue by multiplying with mul_u32_u32().
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to include the fix.
- Ensure 64-bit arithmetic is used for calculations.
- Test the system framebuffer functionality.
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-2026-68270.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68270 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-2026-68270
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-2026-68270 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68270 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 Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': '154795885e8f0033c918c815aece543168bee670', 'versionType': 'git'}, {'status': 'affected', 'version': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': '9d58a811739a365cd693192f4b5344d736967a88', 'versionType': 'git'}, {'status': 'affected', 'version': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': 'b771974988ec7ce077a7246fa0fa588c246fe581', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': '154795885e8f0033c918c815aece543168bee670', 'versionType': 'git'}, {'status': 'affected', 'version': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': '9d58a811739a365cd693192f4b5344d736967a88', 'versionType': 'git'}, {'status': 'affected', 'version': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': 'b771974988ec7ce077a7246fa0fa588c246fe581', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 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': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': '154795885e8f0033c918c815aece543168bee670', 'versionType': 'git'}, {'status': 'affected', 'version': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': '9d58a811739a365cd693192f4b5344d736967a88', 'versionType': 'git'}, {'status': 'affected', 'version': '32ae90c66fb62e4f6ae859422f733dfb249f10cf', 'lessThan': 'b771974988ec7ce077a7246fa0fa588c246fe581', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: drm/sysfb: Avoid possible truncation with calculating visible size Calculating the visible size of the system framebuffer can result in truncation of the result. The calculation uses 32-bit arithmetics, which can overflow if the values for height and stride are large. Fix the issue by multiplying with mul_u32_u32(). Added Reference https://git.kernel.org/stable/c/154795885e8f0033c918c815aece543168bee670 Added Reference https://git.kernel.org/stable/c/9d58a811739a365cd693192f4b5344d736967a88 Added Reference https://git.kernel.org/stable/c/b771974988ec7ce077a7246fa0fa588c246fe581