fbdev: Wrap user-invoked calls to fb_set_var() in helper
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.160, 6.12.114, 6.18.57, 7.1.11
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: fbdev: Wrap user-invoked calls to fb_set_var() in helper Handle fbcon during display updates in fb_set_var_from_user(). Check with fbcon if the mode change is possible, update hardware state and finally update fbcon. Update all callers. Only the FBIOPUT_VSCREENINFO ioctl currently does all steps. Other mode-changes callers in sysfs and driver code are missing fbcon-related steps. With the new helper, ps3fb and sh_mobile_lcdcfb no longer maintain fbcon state themselves.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 3130e7bf43ecfe3a15bcf90b9698e0764a2d8d08; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in d33589eff3d40439b3c83e8da0d07d20df797d50; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in ed7e9715849abd0816b8487b0d12ebd05d6e938b; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 07f7e46833f71472e30da54a50dacdf48521bdd3; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 6f611e5e5f3327cf2e2daabe6ee5acac58cc784e
- Linux Linux
2.6.12
- KernelLinux
From 2.6.12 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.114; From 6.13.0 · fixed in 6.18.57; From 6.19.0 · fixed in 7.1.11