CVE-2026-74675

Summary

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

vt: stabilize tty reference in kbd_keycode with tty_port_tty_get

kbd_keycode() reads vc->port.tty without acquiring a tty reference, racing against con_shutdown() which clears port.tty under a different lock. Use tty_port_tty_get()/tty_kref_put() to hold a proper reference for the duration the tty pointer is needed.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b84fd400f80adf4d1c88fbce50ae1cf2f8119e65affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 38400673c9bfb39cfc87539e1a072087e98f4e4faffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cab5a342f0589334046741006d8a280514f94235affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 38a0aa593ebc275aea6f79534d07f44e43768ce6affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3f6b1d3fcfc26dc3fc85262f753439df93b055b4affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b664592e9ba8c47c9e23408db7ba52eb9f946c8aaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cc4a1a2ce0c58eafd477effb055863935260ddc1affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e25d47a526939ad44b75f778b8a7500562b84fc1affected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux5.10.265 <= 5.10.*unaffected
LinuxLinux5.15.216 <= 5.15.*unaffected
LinuxLinux6.1.183 <= 6.1.*unaffected
LinuxLinux6.6.152 <= 6.6.*unaffected
LinuxLinux6.12.104 <= 6.12.*unaffected
LinuxLinux6.18.45 <= 6.18.*unaffected
LinuxLinux7.1.9 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References