CVE-2026-74675

HIGH 7.8

vt: stabilize tty reference in kbd_keycode with tty_port_tty_get

CVSS Score

7.8

EPSS Score

0.2%

EPSS Percentile

7th

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.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Aug 22, 2026
Last Updated	Aug 25, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Linux / Linux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b84fd400f80adf4d1c88fbce50ae1cf2f8119e65 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 38400673c9bfb39cfc87539e1a072087e98f4e4f 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cab5a342f0589334046741006d8a280514f94235 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 38a0aa593ebc275aea6f79534d07f44e43768ce6 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3f6b1d3fcfc26dc3fc85262f753439df93b055b4 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b664592e9ba8c47c9e23408db7ba52eb9f946c8a 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cc4a1a2ce0c58eafd477effb055863935260ddc1 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e25d47a526939ad44b75f778b8a7500562b84fc1

Linux / Linux

2.6.12

References

NVD ↗ CVE.org ↗ EPSS Data ↗