CVE-2022-29581: Use After Free
First published: Fri Apr 15 2022(Updated: )
A use-after-free flaw was found in u32_change in net/sched/cls_u32.c in the network subcomponent of the Linux kernel. This flaw could allow a local attacker to crash the system and cause a privilege escalation, and a kernel information leak problem. References and upstream patch: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3db09e762dc79584a69c10d74a6b98f89a9979f8">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3db09e762dc79584a69c10d74a6b98f89a9979f8</a> <a href="https://kernel.dance/#3db09e762dc79584a69c10d74a6b98f89a9979f8">https://kernel.dance/#3db09e762dc79584a69c10d74a6b98f89a9979f8</a>
Credit: cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-425.3.1.rt7.213.el8 | 0:4.18.0-425.3.1.rt7.213.el8 |
| redhat/kernel | <0:4.18.0-425.3.1.el8 | 0:4.18.0-425.3.1.el8 |
| redhat/kernel | <0:5.14.0-162.6.1.el9_1 | 0:5.14.0-162.6.1.el9_1 |
| redhat/kernel-rt | <0:5.14.0-162.6.1.rt21.168.el9_1 | 0:5.14.0-162.6.1.rt21.168.el9_1 |
| redhat/kernel | <5.18 | 5.18 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 | |
| Linux Kernel | >=4.14<4.14.278 | |
| Linux Kernel | >=4.15<4.19.241 | |
| Linux Kernel | >=4.20<5.4.191 | |
| Linux Kernel | >=5.5<5.10.113 | |
| Linux Kernel | >=5.11<5.15.36 | |
| Linux Kernel | >=5.16<5.17.5 | |
| Debian | =10.0 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =20.04 | |
| Ubuntu | =22.04 | |
| All of | ||
| netapp h300s firmware | ||
| netapp h300s | ||
| All of | ||
| NetApp H500S Firmware | ||
| netapp h500s | ||
| All of | ||
| netapp h700s firmware | ||
| netapp h700s | ||
| All of | ||
| netapp h300e firmware | ||
| netapp h300e | ||
| All of | ||
| netapp h500e firmware | ||
| netapp h500e | ||
| All of | ||
| netapp h700e firmware | ||
| netapp h700e | ||
| All of | ||
| netapp h410s firmware | ||
| netapp h410s | ||
| All of | ||
| netapp h410c firmware | ||
| netapp h410c | ||
| netapp h300s firmware | ||
| netapp h300s | ||
| NetApp H500S Firmware | ||
| netapp h500s | ||
| netapp h700s firmware | ||
| netapp h700s | ||
| netapp h300e firmware | ||
| netapp h300e | ||
| netapp h500e firmware | ||
| netapp h500e | ||
| netapp h700e firmware | ||
| netapp h700e | ||
| netapp h410s firmware | ||
| netapp h410s | ||
| netapp h410c firmware | ||
| netapp h410c |
Remedy
To mitigate this issue, prevent the module cls_u32 from being loaded by blacklisting the module to prevent it from loading automatically. ~~~ https://access.redhat.com/solutions/41278 ~~~
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-29581 https://nvd.nist.gov/vuln/detail/CVE-2022-29581 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3db09e762dc79584a69c10d74a6b98f89a9979f8 https://kernel.dance/#3db09e762dc79584a69c10d74a6b98f89a9979f8
- https://bugzilla.redhat.com/show_bug.cgi?id=2088021
- https://access.redhat.com/errata/RHSA-2022:7444
- https://access.redhat.com/errata/RHSA-2022:7683
- https://access.redhat.com/errata/RHSA-2022:8267
- https://access.redhat.com/errata/RHSA-2022:7933
- https://access.redhat.com/security/cve/cve-2022-29581
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3db09e762dc79584a69c10d74a6b98f89a9979f8
- https://kernel.dance/#3db09e762dc79584a69c10d74a6b98f89a9979f8
- http://www.openwall.com/lists/oss-security/2022/05/18/2
- http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
- https://security.netapp.com/advisory/ntap-20220629-0005/
- https://www.debian.org/security/2022/dsa-5173
- http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html
- https://launchpad.net/bugs/cve/CVE-2022-29581
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2088023
- https://access.redhat.com/errata/RHSA-2024:0930
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-29581
- https://nvd.nist.gov/vuln/detail/CVE-2022-29581
- https://security-tracker.debian.org/tracker/CVE-2022-29581
- https://ubuntu.com/security/CVE-2022-29581
- https://git.kernel.org/linus/3db09e762dc79584a69c10d74a6b98f89a9979f8
- https://www.openwall.com/lists/oss-security/2022/05/18/2
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2022-29581?
CVE-2022-29581 is considered high severity due to its potential for local privilege escalation and system crashes.
How do I fix CVE-2022-29581?
To remediate CVE-2022-29581, upgrade to a fixed version of the Linux kernel according to the available patches for your distribution.
Which systems are affected by CVE-2022-29581?
CVE-2022-29581 affects various Linux kernel versions across different distributions including Red Hat, Debian, and Ubuntu.
What happens if CVE-2022-29581 is exploited?
Exploitation of CVE-2022-29581 could lead to a local attacker gaining elevated privileges and causing a system crash.
Is there a patch available for CVE-2022-29581?
Yes, patches for CVE-2022-29581 are provided in kernel updates by affected Linux distributions.
- collector/redhat-cve
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/severity
- agent/weakness
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2022-29581
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/trending
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/source
- agent/author
- collector/usn-cve
- source/Ubuntu
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/description
- agent/tags
- agent/event
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup-request
- collector/nvd-index
- package-manager/redhat
- package-manager/debian
- vendor/linux
- canonical/linux kernel
- version/linux kernel/4.14
- version/linux kernel/4.15
- version/linux kernel/4.20
- version/linux kernel/5.5
- version/linux kernel/5.11
- version/linux kernel/5.16
- vendor/debian
- canonical/debian
- version/debian/10.0
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/14.04
- version/ubuntu/16.04
- version/ubuntu/18.04
- version/ubuntu/20.04
- version/ubuntu/22.04
- vendor/netapp
- canonical/netapp h300s firmware
- canonical/netapp h300s
- canonical/netapp h500s firmware
- canonical/netapp h500s
- canonical/netapp h700s firmware
- canonical/netapp h700s
- canonical/netapp h300e firmware
- canonical/netapp h300e
- canonical/netapp h500e firmware
- canonical/netapp h500e
- canonical/netapp h700e firmware
- canonical/netapp h700e
- canonical/netapp h410s firmware
- canonical/netapp h410s
- canonical/netapp h410c firmware
- canonical/netapp h410c