CVE-2026-43123

Summary

In the Linux kernel, the following vulnerability has been resolved:

fbcon: check return value of con2fb_acquire_newinfo()

If fbcon_open() fails when called from con2fb_acquire_newinfo() then info->fbcon_par pointer remains NULL which is later dereferenced.

Add check for return value of the function con2fb_acquire_newinfo() to avoid it.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e < d3e535533767c85788529e626478718b7e95a59faffected
LinuxLinuxd1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e < 3b5a754ec86bc6064af9aca76eb191c2405e6b0caffected
LinuxLinuxd1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e < a785c4e2a999c2d51dfcf40d317cfb30cc735d2caffected
LinuxLinuxd1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e < 0b038c0be6827dd2dbb1ce4f8d92d97c80cbe9ccaffected
LinuxLinuxd1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e < 11a93180a70bb3095a9bd80d113d9277e30d9959affected
LinuxLinuxd1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e < f57b61624c86ef8f87f6e6b7dd0755de03d90e89affected
LinuxLinuxd1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e < 011a0502801c8536f64141a2b61362c14f456544affected
LinuxLinux2.6.23affected
LinuxLinux0 < 2.6.23unaffected
LinuxLinux5.15.203 <= 5.15.*unaffected
LinuxLinux6.1.165 <= 6.1.*unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References