Strix
57.7K

CVE-2026-74424

UnknownEPSS 0.16%

Last modified

CVE-2026-74424 is a vulnerability of currently unknown severity. 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(). EPSS estimates a 0.16% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.16%

5.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e, < 8e9b8b008f4036df0318870c5d754134ff1b94cc; >= d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e, < cc4382dc5134826a3936a6b08de17f7dc7abe232; >= d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e, < 9b783b7e03dc78ec102edf618259a2b55911fc6a; >= d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e, < ac970358c5ca0775841bd2a56ce15dc464b99003; >= d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e, < 6617df8c246311c82cebf061a4cee55b9df60922; >= d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e, < b134ad2f7c06b3c1098dcc95008e2045ff4b49b2; >= d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e, < 5fae9a928482d4845bca169a3a098789203a1ca4
LinuxLinux2.6.23

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74424?
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.
How severe is CVE-2026-74424?
Severity scoring for CVE-2026-74424 is pending analysis. The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74424?
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.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-74424?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST