CVE-2023-23454: Medium severity Linux Linux kernel vulnerability
An out-of-bounds (OOB) read problem was found in cbqclassify in net/sched/schcbq.c in the Linux kernel. This flaw allows a local attacker to cause a denial of service because of type confusion (non-negative numbers can sometimes indicate a TCACTSHOT condition rather than valid classification results).
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caa4b35b4317d5147b3ab0fbdc9c075c7d2e9c12
Other sources
An out-of-bounds (OOB) read problem was found in cbqclassify in net/sched/schcbq.c in the Linux kernel. This issue may allow a local attacker to cause a denial of service due to type confusion. Non-negative numbers could indicate a TCACTSHOT condition rather than valid classification results.
cbqclassify in net/sched/schcbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes indicate a TCACTSHOT condition rather than valid classification results).
Affected Software
Remediation
Information
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is the severity of CVE-2023-23454?
CVE-2023-23454 is rated as high severity due to its potential for causing denial of service.
How do I fix CVE-2023-23454?
To mitigate CVE-2023-23454, you should update to the patched versions of the affected Linux kernel versions mentioned in the advisory.
What versions are affected by CVE-2023-23454?
CVE-2023-23454 affects various versions of the Linux kernel, specifically versions prior to 4.18.0-477.10.1 and below 6.2.
Who can exploit CVE-2023-23454?
CVE-2023-23454 can be exploited by a local attacker with the ability to execute code on the affected system.
What systems are impacted by CVE-2023-23454?
CVE-2023-23454 impacts systems running affected versions of the Linux kernel, including distributions like Red Hat and Debian.