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CVE-2022-3176

CVSS v3.1 7.8 (High)
78% Progress
EPSS 0.04 % (15th)
0.04% Progress
Affected Products 2
Advisories 17
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

There exists a use-after-free in io_uring in the Linux kernel. Signalfd_poll() and binder_poll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the io_uring poll doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with io_uring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659

Weaknesses
CWE-416
Use After Free
CVE Status
PUBLISHED
CNA
Google Inc.
Published Date
2022-09-16 14:15:09
(2 years ago)
Updated Date
2023-04-11 18:15:23
(17 months ago)

Affected Products

Debian

Linux

Configuration #1

    CPE23 From Up To
  Linux Kernel from 5.1 version and prior 5.4.212 version cpe:2.3:o:linux:linux_kernel >= 5.1 < 5.4.212
  Linux Kernel from 5.5 version and prior 5.10.141 version cpe:2.3:o:linux:linux_kernel >= 5.5 < 5.10.141
  Linux Kernel from 5.11 version and prior 5.15.65 version cpe:2.3:o:linux:linux_kernel >= 5.11 < 5.15.65
  Linux Kernel from 5.16 version and prior 5.17 version cpe:2.3:o:linux:linux_kernel >= 5.16 < 5.17

Configuration #2

    CPE23 From Up To
  Debian Linux 10.0 cpe:2.3:o:debian:debian_linux:10.0
  Debian Linux 11.0 cpe:2.3:o:debian:debian_linux:11.0