CVE-2026-31603
staging: sm750fb: fix division by zero in ps_to_hz()
Description
In the Linux kernel, the following vulnerability has been resolved: staging: sm750fb: fix division by zero in ps_to_hz() ps_to_hz() is called from hw_sm750_crtc_set_mode() without validating that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO causes a division by zero. Fix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent with other framebuffer drivers.
INFO
Published Date :
April 24, 2026, 3:16 p.m.
Last Modified :
April 29, 2026, 7:07 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Reject zero pixclock in lynxfb_ops_check_var.
- Apply the fix consistently with other framebuffer drivers.
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-2026-31603.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31603 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-2026-31603
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-2026-31603 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-31603 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.
-
Initial Analysis by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-369 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.24 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 7.0 up to (excluding) 7.0.1 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.83 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.1 up to (excluding) 6.6.136 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1412ba36597a82e928f20047f41d6c6582dafe8a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2f640c6043aeab31a2f607d7605271860c3b11df Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6144895a4335a2491c282931f1f2fa610b86339f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/75a1621e4f91310673c9acbcbb25c2a7ff821cd3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/779412e0e391fd4a0d12e1d1adaa7bf043de62d7 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/daf6733bd7c4c5015b431739ac29b0e29021096b Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 27, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/779412e0e391fd4a0d12e1d1adaa7bf043de62d7 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 27, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/75a1621e4f91310673c9acbcbb25c2a7ff821cd3 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 24, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: staging: sm750fb: fix division by zero in ps_to_hz() ps_to_hz() is called from hw_sm750_crtc_set_mode() without validating that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO causes a division by zero. Fix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent with other framebuffer drivers. Added Reference https://git.kernel.org/stable/c/1412ba36597a82e928f20047f41d6c6582dafe8a Added Reference https://git.kernel.org/stable/c/2f640c6043aeab31a2f607d7605271860c3b11df Added Reference https://git.kernel.org/stable/c/6144895a4335a2491c282931f1f2fa610b86339f Added Reference https://git.kernel.org/stable/c/daf6733bd7c4c5015b431739ac29b0e29021096b