Red Hat Security Advisory: kpatch-patch security update
A security vulnerability (CVE-2024-0646) exists in the Linux kernel's ktls implementation where using the splice function with a ktls socket as the destination causes overwriting of readonly memory pages. This issue is addressed by a kpatch live patch module update for Red Hat Enterprise Linux 9. The update modifies running kernel code to fix the flaw. The vulnerability is rated as important by Red Hat Product Security.
AI Analysis
Technical Summary
CVE-2024-0646 is a kernel vulnerability affecting the ktls (Kernel Transport Layer Security) feature in Linux. When the splice function is used with a ktls socket as the destination, it overwrites readonly memory pages, which is a memory corruption issue classified under CWE-787. Red Hat has released a kpatch live patch update for Red Hat Enterprise Linux 9 and its Extended Update Support and Extended Life Cycle variants to address this vulnerability. The patch modifies the running kernel code dynamically to prevent the ktls overwrite issue. No CVSS score is provided, but the vendor rates the update as Important.
Potential Impact
The vulnerability allows overwriting of readonly memory pages in the kernel when using ktls sockets with the splice function. This could lead to kernel memory corruption, potentially causing system instability or enabling privilege escalation. The vendor rates the impact as Important (high severity). There are no known exploits in the wild at the time of the advisory.
Mitigation Recommendations
Red Hat has released official kpatch live patch updates for Red Hat Enterprise Linux 9 and its Extended Update Support and Extended Life Cycle variants. Applying these kpatch updates will remediate the vulnerability without requiring a system reboot. Users should follow Red Hat's guidance at https://access.redhat.com/articles/11258 to apply the updates promptly. Patch status is confirmed as available via these kpatch updates.
Red Hat Security Advisory: kpatch-patch security update
Description
A security vulnerability (CVE-2024-0646) exists in the Linux kernel's ktls implementation where using the splice function with a ktls socket as the destination causes overwriting of readonly memory pages. This issue is addressed by a kpatch live patch module update for Red Hat Enterprise Linux 9. The update modifies running kernel code to fix the flaw. The vulnerability is rated as important by Red Hat Product Security.
Affected software
pkg:rpm/redhat/kpatch-patchRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-0646 is a kernel vulnerability affecting the ktls (Kernel Transport Layer Security) feature in Linux. When the splice function is used with a ktls socket as the destination, it overwrites readonly memory pages, which is a memory corruption issue classified under CWE-787. Red Hat has released a kpatch live patch update for Red Hat Enterprise Linux 9 and its Extended Update Support and Extended Life Cycle variants to address this vulnerability. The patch modifies the running kernel code dynamically to prevent the ktls overwrite issue. No CVSS score is provided, but the vendor rates the update as Important.
Potential Impact
The vulnerability allows overwriting of readonly memory pages in the kernel when using ktls sockets with the splice function. This could lead to kernel memory corruption, potentially causing system instability or enabling privilege escalation. The vendor rates the impact as Important (high severity). There are no known exploits in the wild at the time of the advisory.
Mitigation Recommendations
Red Hat has released official kpatch live patch updates for Red Hat Enterprise Linux 9 and its Extended Update Support and Extended Life Cycle variants. Applying these kpatch updates will remediate the vulnerability without requiring a system reboot. Users should follow Red Hat's guidance at https://access.redhat.com/articles/11258 to apply the updates promptly. Patch status is confirmed as available via these kpatch updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2024:1251
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a419cc127e9c79719ac0ceb
Added to database: 06/28/2026, 22:14:25 UTC
Last enriched: 06/28/2026, 22:40:36 UTC
Last updated: 07/02/2026, 08:51:12 UTC
Views: 9
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