vt: stabilize tty reference in kbd_keycode with tty_port_tty_get
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.8epss 0.2%
probabilidad de explotación
0.2%top 94% de las CVE
explotación observada
noninguna fuente lo reporta
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Productos afectados
Linux · LinuxReferencias
https://git.kernel.org/stable/c/38400673c9bfb39cfc87539e1a072087e98f4e4fhttps://git.kernel.org/stable/c/38a0aa593ebc275aea6f79534d07f44e43768ce6https://git.kernel.org/stable/c/3f6b1d3fcfc26dc3fc85262f753439df93b055b4https://git.kernel.org/stable/c/b664592e9ba8c47c9e23408db7ba52eb9f946c8ahttps://git.kernel.org/stable/c/b84fd400f80adf4d1c88fbce50ae1cf2f8119e65https://git.kernel.org/stable/c/cab5a342f0589334046741006d8a280514f94235https://git.kernel.org/stable/c/cc4a1a2ce0c58eafd477effb055863935260ddc1https://git.kernel.org/stable/c/e25d47a526939ad44b75f778b8a7500562b84fc1