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CVE-2021-46905

CVSS v3.1 5.5 (Medium)
55% Progress
EPSS 0.04 % (5th)
0.04% Progress
Affected Products 1
Advisories 9
NVD Status Analyzed
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software Tools, Exploits & PoC Graph Web & Social Timeline

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().

Weaknesses
CWE-476
NULL Pointer Dereference
CVE Status
PUBLISHED
NVD Status
Analyzed
CNA
kernel.org
Published Date
2024-02-26 16:27:45
(6 months ago)
Updated Date
2024-04-17 19:30:05
(5 months ago)

Affected Products

Linux

Configuration #1

    CPE23 From Up To
  Linux Kernel prior 4.19.189 version cpe:2.3:o:linux:linux_kernel < 4.19.189
  Linux Kernel from 4.20.0 version and prior 5.4.115 version cpe:2.3:o:linux:linux_kernel >= 4.20.0 < 5.4.115
  Linux Kernel from 5.5.0 version and prior 5.10.33 version cpe:2.3:o:linux:linux_kernel >= 5.5.0 < 5.10.33
  Linux Kernel from 5.11.0 version and prior 5.11.17 version cpe:2.3:o:linux:linux_kernel >= 5.11.0 < 5.11.17
  Linux Kernel 5.12 cpe:2.3:o:linux:linux_kernel:5.12:-
  Linux Kernel 5.12 Rc1 cpe:2.3:o:linux:linux_kernel:5.12:rc1
  Linux Kernel 5.12 Rc2 cpe:2.3:o:linux:linux_kernel:5.12:rc2
  Linux Kernel 5.12 Rc3 cpe:2.3:o:linux:linux_kernel:5.12:rc3
  Linux Kernel 5.12 Rc4 cpe:2.3:o:linux:linux_kernel:5.12:rc4
  Linux Kernel 5.12 Rc5 cpe:2.3:o:linux:linux_kernel:5.12:rc5
  Linux Kernel 5.12 Rc6 cpe:2.3:o:linux:linux_kernel:5.12:rc6
  Linux Kernel 5.12 Rc7 cpe:2.3:o:linux:linux_kernel:5.12:rc7