CVE-2026-74424
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
fbcon: fix NULL pointer dereference for a console without vc_data
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e | affected | git | 8e9b8b008f4036df0318870c5d754134ff1b94cc | Unavailable | None listed |
| d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e | affected | git | cc4382dc5134826a3936a6b08de17f7dc7abe232 | Unavailable | None listed |
| d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e | affected | git | 9b783b7e03dc78ec102edf618259a2b55911fc6a | Unavailable | None listed |
| d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e | affected | git | ac970358c5ca0775841bd2a56ce15dc464b99003 | Unavailable | None listed |
| d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e | affected | git | 6617df8c246311c82cebf061a4cee55b9df60922 | Unavailable | None listed |
| d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e | affected | git | b134ad2f7c06b3c1098dcc95008e2045ff4b49b2 | Unavailable | None listed |
| d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e | affected | git | 5fae9a928482d4845bca169a3a098789203a1ca4 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.23 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.23 | Unavailable | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |