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prionPRIOn knowledge basePRION:CVE-2021-46905
HistoryFeb 26, 2024 - 4:27 p.m.

Null pointer dereference

2024-02-2616:27:00
PRIOn knowledge base
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13
linux kernel
net module
hso
null pointer dereference
vulnerability
nvd
fix
disconnect
regression

7.2 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

5.1%

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

net: hso: fix NULL-deref on disconnect regression

Commit 8a12f8836145 (β€œnet: hso: fix null-ptr-deref during tty device
unregistration”) fixed the racy minor allocation reported by syzbot, but
introduced an unconditional NULL-pointer dereference on every disconnect
instead.

Specifically, the serial device table must no longer be accessed after
the minor has been released by hso_serial_tty_unregister().

7.2 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

5.1%