CVE-2026-74424
CVE CVE-2026-74424EUVD EUVD-2026-59571Published 2026-08-15T05:59:27.000ZLast changed 2026-08-18T06:56:33.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: fbcon: fix NULL pointer dereference for a console without vc_data fbcon_new_modelist() runs when a framebuffer's modelist changes. For each console mapped to it with fb_display[i].mode set, it reads vc_cons[i].d and passes the vc_num to fbcon_set_disp(). This assumes a console with a mode set has a vc_data, but it can be NULL. fbcon_set_disp() sets fb_display[i].mode before it checks vc_data, and fbcon_deinit() leaves the mode set after the vc_data is freed. fbcon_new_modelist() then dereferences the NULL vc_data. Keep fb_display[i].mode set only while the console has a vc_data. Check vc_data before setting the mode in fbcon_set_disp(), and clear the mode in fbcon_deinit(). The existing mode check in fbcon_new_modelist() then skips such consoles.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e <5fae9a928482d4845bca169a3a098789203a1ca4; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e <6617df8c246311c82cebf061a4cee55b9df60922; patch: 7.1.5; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e <9b783b7e03dc78ec102edf618259a2b55911fc6a; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e <cc4382dc5134826a3936a6b08de17f7dc7abe232; patch: 5.15.212; patch: 6.6.145; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e <ac970358c5ca0775841bd2a56ce15dc464b99003; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e <b134ad2f7c06b3c1098dcc95008e2045ff4b49b2; patch: 6.12.97; 2.6.23; patch: 6.18.40; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e <8e9b8b008f4036df0318870c5d754134ff1b94cc; patch: 6.1.178; patch: 7.2; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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