5.5

CVE-2021-46905

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

net: hso: fix NULL-deref on disconnect regression

Commit 8a12f8836145 ("net: 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().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 4.19.189
Linux ≫ Linux Kernel Version >= 4.20.0 < 5.4.115
Linux ≫ Linux Kernel Version >= 5.5.0 < 5.10.33
Linux ≫ Linux Kernel Version >= 5.11.0 < 5.11.17
Linux ≫ Linux Kernel Version5.12 Update-
Linux ≫ Linux Kernel Version5.12 Updaterc1
Linux ≫ Linux Kernel Version5.12 Updaterc2
Linux ≫ Linux Kernel Version5.12 Updaterc3
Linux ≫ Linux Kernel Version5.12 Updaterc4
Linux ≫ Linux Kernel Version5.12 Updaterc5
Linux ≫ Linux Kernel Version5.12 Updaterc6
Linux ≫ Linux Kernel Version5.12 Updaterc7
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.01% 0.01
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.