CVE-2026-74320

fbdev: sm501fb: Fix buffer errors in OF binding code

N/A

Published: August 15, 2026 at 05:58 AM UTC

Updated: August 17, 2026 at 06:19 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.39 ≤ v < 5.10.2612.6.39 ≤ v < 5.15.2122.6.39 ≤ v < 6.1.1782.6.39 ≤ v < 6.12.972.6.39 ≤ v < 6.18.402.6.39 ≤ v < 6.6.1452.6.39 ≤ v < 7.1.52.6.39 ≤ v < 7.22.6.394295f9bf74a885da390abc49a3b42a011c1bb890

Vendor states this is fixed in 0bc3d909a49e1fd8b8c3f2160d526e672c40621d (fixed)

Vendor states this is fixed in 47008d59c60ed896085da95f8d4dd40e1677dd3a (fixed)

Vendor states this is fixed in 48cf0f4c6581ec90104cec9c5bf794a8bf347e30 (fixed)

Vendor states this is fixed in 9057e3f5db39f0ef0dac2f59f2bc59bf17e36c31 (fixed)

Vendor states this is fixed in b2ff450f7f5cfc7143cab57c3ad70293ba8b822a (fixed)

Vendor states this is fixed in d374f76e1257ecc5d691a765c512ed2c29a44741 (fixed)

Vendor states this is fixed in d8421e09382cfe0bd2a044c8b0a822f64855dd4e (fixed)

Vendor states this is fixed in de590cdf7efec8a0b6da90ae2ab5fc5df26810b9 (fixed)

Vendor states this is fixed in 2.6.39 (unaffected)

Vendor states this is fixed in 5.10.261 (unaffected)

Vendor states this is fixed in 5.15.212 (unaffected)

Vendor states this is fixed in 6.1.178 (unaffected)