CVE-2023-23455
First published: Thu Jan 12 2023(Updated: )
A denial of service flaw was found in atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel. In this flaw a local attacker may cause a denial of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results). Reference: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a2965c7be0522eaa18808684b7b82b248515511b">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a2965c7be0522eaa18808684b7b82b248515511b</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.2 | 6.2 |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager | <=ISVG 10.0.2 | |
| Linux kernel | >=2.6.12<=6.1.4 | |
| Debian | =11.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 |
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Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a2965c7be0522eaa18808684b7b82b248515511b
- https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://www.debian.org/security/2023/dsa-5324
- https://www.openwall.com/lists/oss-security/2023/01/10/1
- https://www.openwall.com/lists/oss-security/2023/01/10/4
- https://launchpad.net/bugs/cve/CVE-2023-23455
- https://access.redhat.com/errata/RHSA-2023:6901
- https://access.redhat.com/errata/RHSA-2023:7077
- https://access.redhat.com/errata/RHSA-2024:0575
- https://access.redhat.com/errata/RHSA-2024:0724
- https://bugzilla.redhat.com/show_bug.cgi?id=2168332
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23455
- https://nvd.nist.gov/vuln/detail/CVE-2023-23455
- https://security-tracker.debian.org/tracker/CVE-2023-23455
- https://ubuntu.com/security/CVE-2023-23455
- https://git.kernel.org/linus/a2965c7be0522eaa18808684b7b82b248515511b
- https://www.ibm.com/support/pages/node/7172423 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-23455?
CVE-2023-23455 is classified as a denial of service vulnerability in the Linux kernel.
How do I fix CVE-2023-23455?
To fix CVE-2023-23455, update the Linux kernel to version 6.2 or above.
What software is affected by CVE-2023-23455?
CVE-2023-23455 affects various versions of the Linux kernel, IBM Security Verify Governance, and Identity Manager software components.
Can CVE-2023-23455 be exploited locally?
Yes, CVE-2023-23455 can be exploited by a local attacker, potentially leading to a denial of service.
What specific Linux kernel versions contain CVE-2023-23455?
CVE-2023-23455 impacts Linux kernel versions from 2.6.12 up to 6.1.4.
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