Red Hat Security Advisory: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898) * kernel: i40e: fix idx validation in config queues msg (CVE-2025-39971) * kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() (CVE-2025-40047) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
This Red Hat security advisory (RHSA-2025:21933) addresses multiple vulnerabilities in the Linux kernel packages, specifically in the e1000e and i40e network drivers and the io_uring subsystem. The vulnerabilities include a heap overflow in the e1000_set_eeprom function (CVE-2025-39898), improper index validation in the i40e config queues message handling (CVE-2025-39971), and a failure to prune wait queue entries in io_waitid_wait() (CVE-2025-40047). These issues are fixed in updated kernel packages for Red Hat Enterprise Linux 9.6 Extended Update Support and related product variants. The advisory rates the security impact as moderate and recommends applying the update and rebooting the system. No CVSS scores are provided in the advisory; users are referred to the CVE pages for detailed scoring.
Potential Impact
The vulnerabilities affect the Linux kernel's network drivers and io_uring subsystem, potentially leading to memory corruption (heap overflow), improper validation, and wait queue management issues. These could impact system stability or security depending on exploitability. The advisory rates the overall impact as moderate. There are no known exploits in the wild at the time of the advisory.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 9.6 Extended Update Support and related variants should apply the kernel update as detailed in the advisory (https://access.redhat.com/articles/11258) and reboot their systems to activate the fixes. No additional mitigation steps are indicated or required beyond applying the official update and rebooting.
Red Hat Security Advisory: kernel security update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898) * kernel: i40e: fix idx validation in config queues msg (CVE-2025-39971) * kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() (CVE-2025-40047) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory (RHSA-2025:21933) addresses multiple vulnerabilities in the Linux kernel packages, specifically in the e1000e and i40e network drivers and the io_uring subsystem. The vulnerabilities include a heap overflow in the e1000_set_eeprom function (CVE-2025-39898), improper index validation in the i40e config queues message handling (CVE-2025-39971), and a failure to prune wait queue entries in io_waitid_wait() (CVE-2025-40047). These issues are fixed in updated kernel packages for Red Hat Enterprise Linux 9.6 Extended Update Support and related product variants. The advisory rates the security impact as moderate and recommends applying the update and rebooting the system. No CVSS scores are provided in the advisory; users are referred to the CVE pages for detailed scoring.
Potential Impact
The vulnerabilities affect the Linux kernel's network drivers and io_uring subsystem, potentially leading to memory corruption (heap overflow), improper validation, and wait queue management issues. These could impact system stability or security depending on exploitability. The advisory rates the overall impact as moderate. There are no known exploits in the wild at the time of the advisory.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 9.6 Extended Update Support and related variants should apply the kernel update as detailed in the advisory (https://access.redhat.com/articles/11258) and reboot their systems to activate the fixes. No additional mitigation steps are indicated or required beyond applying the official update and rebooting.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:21933
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-39971","CVE-2025-39973","CVE-2025-40047"]
- Cvss Version
- null
Threat ID: 6a3da1db4853345fc18291a4
Added to database: 06/25/2026, 21:47:07 UTC
Last enriched: 06/25/2026, 22:20:44 UTC
Last updated: 07/03/2026, 04:52:10 UTC
Views: 22
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.