CVE-2022-4269
First published: Fri Sep 23 2022(Updated: )
A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirecting egress packets to ingress using TC action "mirred") a local unprivileged user could trigger a CPU soft lockup (ABBA deadlock) when the transport protocol in use (TCP or SCTP) does a retransmission, resulting in a denial of service condition.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-425.19.2.rt7.230.el8_7 | 0:4.18.0-425.19.2.rt7.230.el8_7 |
| redhat/kernel | <0:4.18.0-425.19.2.el8_7 | 0:4.18.0-425.19.2.el8_7 |
| redhat/kernel-rt | <0:4.18.0-305.82.1.rt7.154.el8_4 | 0:4.18.0-305.82.1.rt7.154.el8_4 |
| redhat/kernel | <0:4.18.0-305.82.1.el8_4 | 0:4.18.0-305.82.1.el8_4 |
| redhat/kernel | <0:4.18.0-372.46.1.el8_6 | 0:4.18.0-372.46.1.el8_6 |
| 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 | <0:5.14.0-70.49.1.el9_0 | 0:5.14.0-70.49.1.el9_0 |
| redhat/kernel-rt | <0:5.14.0-70.49.1.rt21.120.el9_0 | 0:5.14.0-70.49.1.rt21.120.el9_0 |
| redhat/kernel | <6.3 | 6.3 |
| Linux Kernel | =4.1-rc1 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-4269 https://nvd.nist.gov/vuln/detail/CVE-2022-4269
- https://bugzilla.redhat.com/show_bug.cgi?id=2150272
- https://access.redhat.com/errata/RHSA-2023:1584
- https://access.redhat.com/errata/RHSA-2023:1566
- https://access.redhat.com/errata/RHSA-2023:1220
- https://access.redhat.com/errata/RHSA-2023:1221
- https://access.redhat.com/errata/RHSA-2023:1130
- https://access.redhat.com/errata/RHSA-2023:1470
- https://access.redhat.com/errata/RHSA-2023:1469
- https://access.redhat.com/errata/RHSA-2023:1202
- https://access.redhat.com/errata/RHSA-2023:1203
- https://access.redhat.com/security/cve/cve-2022-4269
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti%40redhat.com/
- https://security.netapp.com/advisory/ntap-20230929-0001/
- https://www.debian.org/security/2023/dsa-5480
- https://launchpad.net/bugs/cve/CVE-2022-4269
- https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti@redhat.com/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2150275
- https://access.redhat.com/articles/371803
- https://github.com/torvalds/linux/commit/ca22da2fbd69
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4269
- https://nvd.nist.gov/vuln/detail/CVE-2022-4269
- https://security-tracker.debian.org/tracker/CVE-2022-4269
- https://ubuntu.com/security/CVE-2022-4269
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2022-4269?
CVE-2022-4269 is classified as a high-severity vulnerability due to its potential to cause a CPU soft lockup.
How do I fix CVE-2022-4269?
To fix CVE-2022-4269, users should upgrade to the appropriate patched version of the kernel as specified in the vulnerability details.
Which versions of the Linux kernel are affected by CVE-2022-4269?
CVE-2022-4269 affects multiple versions of the Linux kernel including certain kernel-rt and kernel packages up to version 5.14.0-162.22.2.
Is CVE-2022-4269 exploitable remotely?
CVE-2022-4269 is not considered exploitable remotely, as it requires local access to trigger the vulnerability.
What types of systems are impacted by CVE-2022-4269?
CVE-2022-4269 impacts systems running specific versions of the Linux kernel, particularly those configured to use the Traffic Control subsystem.
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