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CVE-2026-74675

Unknown

Last modified

CVE-2026-74675 is a vulnerability of currently unknown severity. 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..

Description

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

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

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b84fd400f80adf4d1c88fbce50ae1cf2f8119e65; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 38400673c9bfb39cfc87539e1a072087e98f4e4f; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < cab5a342f0589334046741006d8a280514f94235; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 38a0aa593ebc275aea6f79534d07f44e43768ce6; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3f6b1d3fcfc26dc3fc85262f753439df93b055b4; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b664592e9ba8c47c9e23408db7ba52eb9f946c8a; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < cc4a1a2ce0c58eafd477effb055863935260ddc1; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e25d47a526939ad44b75f778b8a7500562b84fc1; < 5.10.265; < 5.15.216; < 6.1.183; < 6.6.152; < 6.12.104; < 6.18.45; < 7.1.9
LinuxLinuxAll versions

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74675?
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.
How severe is CVE-2026-74675?
Severity scoring for CVE-2026-74675 is pending analysis.
How do I fix CVE-2026-74675?
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.

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Source: NVD / NIST