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CVE-2026-74320

UnknownEPSS 0.18%

Last modified

CVE-2026-74320 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: fbdev: sm501fb: Fix buffer errors in OF binding code The code that gets the frame buffer mode from OF has 'use after free', 'buffer overrun' and memory leaks. info->edid_data isn't free if the probe functions fail or if pd->def_mode is set. If both the CRT and PANEL are enabled info->edid_data is used after being freed and is freed twice. The string returned by of_get_property(np, "mode", &len) is just written over either the static "640x480-16@60" or the module parameter string without any regard for the length (which is most likely longer). Use kstrump() for the OF mode and free everything before freeing 'info.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: sm501fb: Fix buffer errors in OF binding code The code that gets the frame buffer mode from OF has 'use after free', 'buffer overrun' and memory leaks. info->edid_data isn't free if the probe functions fail or if pd->def_mode is set. If both the CRT and PANEL are enabled info->edid_data is used after being freed and is freed twice. The string returned by of_get_property(np, "mode", &len) is just written over either the static "640x480-16@60" or the module parameter string without any regard for the length (which is most likely longer). Use kstrump() for the OF mode and free everything before freeing 'info.

Metrics

EPSS Probability
0.18%

7.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 4295f9bf74a885da390abc49a3b42a011c1bb890, < 0bc3d909a49e1fd8b8c3f2160d526e672c40621d; >= 4295f9bf74a885da390abc49a3b42a011c1bb890, < 47008d59c60ed896085da95f8d4dd40e1677dd3a; >= 4295f9bf74a885da390abc49a3b42a011c1bb890, < d374f76e1257ecc5d691a765c512ed2c29a44741; >= 4295f9bf74a885da390abc49a3b42a011c1bb890, < b2ff450f7f5cfc7143cab57c3ad70293ba8b822a; >= 4295f9bf74a885da390abc49a3b42a011c1bb890, < 9057e3f5db39f0ef0dac2f59f2bc59bf17e36c31; >= 4295f9bf74a885da390abc49a3b42a011c1bb890, < de590cdf7efec8a0b6da90ae2ab5fc5df26810b9; >= 4295f9bf74a885da390abc49a3b42a011c1bb890, < 48cf0f4c6581ec90104cec9c5bf794a8bf347e30; >= 4295f9bf74a885da390abc49a3b42a011c1bb890, < d8421e09382cfe0bd2a044c8b0a822f64855dd4e
LinuxLinux2.6.39

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74320?
In the Linux kernel, the following vulnerability has been resolved: fbdev: sm501fb: Fix buffer errors in OF binding code The code that gets the frame buffer mode from OF has 'use after free', 'buffer overrun' and memory leaks. info->edid_data isn't free if the probe functions fail or if pd->def_mode is set. If both the CRT and PANEL are enabled info->edid_data is used after being freed and is freed twice. The string returned by of_get_property(np, "mode", &len) is just written over either the static "640x480-16@60" or the module parameter string without any regard for the length (which is most likely longer). Use kstrump() for the OF mode and free everything before freeing 'info.
How severe is CVE-2026-74320?
Severity scoring for CVE-2026-74320 is pending analysis. The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74320?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST