vt: stabilize tty reference in kbd_keycode with tty_port_tty_get (Linux Linux)

CVE-2026-74675
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 3 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Received

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.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b84fd400f80adf4d1c88fbce50ae1cf2f8119e65 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 38400673c9bfb39cfc87539e1a072087e98f4e4f ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cab5a342f0589334046741006d8a280514f94235 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 38a0aa593ebc275aea6f79534d07f44e43768ce6 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3f6b1d3fcfc26dc3fc85262f753439df93b055b4 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b664592e9ba8c47c9e23408db7ba52eb9f946c8a
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.152 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD