CVE-2024-27043VulnerabilityPublished 26 Nov 2024Updated 20 Oct 2026

Red Hat Security Advisory: kernel-rt:4.18.0 security update

Affects Red HatSource GCVE Database

Mentioned vulnerabilities

CVE-2024-38564

Not known to be exploited : upgrade to 4.18.0-553.30.1.rt7.371.el8_10 when convenient.

Data as of 25 Oct 2026, 19:02 UTC

Severity

Low

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.18.0-553.30.1.rt7.371.el8_10

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Nov 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Red Hat to 4.18.0-553.30.1.rt7.371.el8_10.

Affected software

Product	Affected	Fixed in
Red Hat Product Security Red Hat	Affected >=4.18.0 <4.18.0-553.30.1.rt7.371.el8_10	Fixed in 4.18.0-553.30.1.rt7.371.el8_10

AI-suggested

Red Hat has released an official security update for kernel-rt 4.18.0 addressing these vulnerabilities. Users should apply the update as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot the system to ensure the fixes take effect.

Description

Red Hat has released a security update for the kernel-rt 4.18.0 package used in Red Hat Enterprise Linux 8 Real Time variants. This update addresses two vulnerabilities: a use-after-free flaw in the media DVB device driver (CVE-2024-27043) and an enforcement issue in BPF program attach types (CVE-2024-38564). The update is rated with a low security impact by Red Hat. Systems must be rebooted after applying the update for changes to take effect.

Impact

The vulnerabilities could potentially lead to memory corruption (use-after-free) and improper BPF program attachments, which may affect system stability or security. However, Red Hat rates the overall security impact as low. There are no known exploits in the wild at this time.

Summary

The kernel-rt packages provide a Real Time Linux Kernel for systems requiring high determinism. Two security issues are fixed in this update: CVE-2024-27043, a use-after-free vulnerability in the media DVB device driver, and CVE-2024-38564, which adds enforcement for BPF_PROG_TYPE_CGROUP_SKB attach types in BPF_LINK_CREATE to prevent improper BPF program attachments. Red Hat has issued this update for Red Hat Enterprise Linux 8 Real Time and related variants to address these issues.

CWE-665Improper Initialization (opens in a new tab)
Class weaknessLikelihood of exploit: Medium
The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Requirements · Language Selection
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Architecture and Design
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Implementation
Explicitly initialize all your variables and other data stores, either during declaration or just before the first usage.
Attack patterns
Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions (opens in a new tab)
Leveraging Race Conditions (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-825Expired Pointer Dereference (opens in a new tab)
Base weakness
The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.
Architecture and Design
Choose a language that provides automatic memory management.
Implementation
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 20 Oct 2026, 22:51 UTC

WeaknessesCWE-665, CWE-825

Technical details

References

Community reviews

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