CVE-2022-4744: Double Free
First published: Mon Dec 26 2022(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:5.14.0-162.22.2.el9_1 | 0:5.14.0-162.22.2.el9_1 |
| redhat/kernel-rt | <0:5.14.0-162.22.2.rt21.186.el9_1 | 0:5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel | <0:5.14.0-70.50.2.el9_0 | 0:5.14.0-70.50.2.el9_0 |
| redhat/kernel-rt | <0:5.14.0-70.50.2.rt21.122.el9_0 | 0:5.14.0-70.50.2.rt21.122.el9_0 |
| Linux Linux kernel | >=5.5<5.10.136 | |
| Linux Linux kernel | >=5.11<5.15.12 | |
| redhat/kernel | <5.16 | 5.16 |
| IBM QRadar SIEM | <=7.5 - 7.5.0 UP8 IF01 |
Remedy
To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-4744 https://nvd.nist.gov/vuln/detail/CVE-2022-4744 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e
- https://bugzilla.redhat.com/show_bug.cgi?id=2156322
- https://access.redhat.com/errata/RHSA-2023:1470
- https://access.redhat.com/errata/RHSA-2023:1469
- https://access.redhat.com/errata/RHSA-2023:1471
- https://access.redhat.com/errata/RHSA-2023:1468
- https://access.redhat.com/errata/RHSA-2023:1467
- https://access.redhat.com/errata/RHSA-2023:1466
- https://access.redhat.com/security/cve/cve-2022-4744
- http://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.html
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://security.netapp.com/advisory/ntap-20230526-0009/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2180939
- https://access.redhat.com/errata/RHSA-2023:6901
- https://access.redhat.com/errata/RHSA-2023:7077
- https://access.redhat.com/errata/RHSA-2024:1404
- https://exchange.xforce.ibmcloud.com/vulnerabilities/252377
- https://www.ibm.com/support/pages/node/7150684 (Advisory)
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/author
- agent/remedy
- agent/weakness
- agent/event
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2022-4744
- agent/software-canonical-lookup
- collector/ibm-support
- source/IBM
- agent/references
- agent/severity
- agent/last-modified-date
- agent/softwarecombine
- agent/description
- agent/tags
- collector/mitre-cve
- source/MITRE
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/5.5
- version/linux linux kernel/5.11
- vendor/ibm
- canonical/ibm qradar siem
- version/ibm qradar siem/7.5 - 7.5.0 up8 if01