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Red Hat: CVE-2022-4744: kernel: tun: avoid double free in tun_free_netdev (Multiple Advisories)

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Red Hat: CVE-2022-4744: kernel: tun: avoid double free in tun_free_netdev (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
03/27/2023
Created
03/28/2023
Added
03/28/2023
Modified
01/28/2025

Description

A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2022-4744
  • RHSA-2023:1466
  • RHSA-2023:1467
  • RHSA-2023:1468
  • RHSA-2023:1469
  • RHSA-2023:1470
  • RHSA-2023:1471
  • RHSA-2023:6901
  • RHSA-2023:7077
  • RHSA-2024:1404
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