Red Hat Security Advisory: kernel security update
Multiple use-after-free vulnerabilities have been identified in the Linux kernel packages used by Red Hat Enterprise Linux 8. These vulnerabilities affect components such as page_pool, bridge multicast, smc, mlxsw spectrum_mr, and the teql queueing discipline. One of these issues (CVE-2026-23074) can lead to privilege escalation. Red Hat has issued a security advisory (RHSA-2026:3083) addressing these vulnerabilities with an important kernel update. Systems must be rebooted after applying the update for the fixes to take effect.
AI Analysis
Technical Summary
This Red Hat security advisory addresses five use-after-free vulnerabilities in the Linux kernel: CVE-2025-38129 in page_pool_recycle_in_ring, CVE-2025-38248 in bridge multicast initialization, CVE-2025-40064 in smc's __pnet_find_base_ndev(), CVE-2025-68800 in mlxsw spectrum_mr multicast route stats update, and CVE-2026-23074 in the teql queueing discipline which can lead to privilege escalation. These vulnerabilities affect Red Hat Enterprise Linux 8 kernel packages and related products. The advisory provides updated kernel packages that fix these issues. A system reboot is required to apply the updates fully.
Potential Impact
The vulnerabilities are use-after-free bugs that can cause memory corruption, potentially leading to system instability or privilege escalation in the case of CVE-2026-23074. Exploitation could allow attackers to escalate privileges on affected systems. No known exploits in the wild have been reported at the time of this advisory. The security impact is rated as Important by Red Hat.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these use-after-free vulnerabilities. Users of Red Hat Enterprise Linux 8 and related products should apply the kernel update provided in advisory RHSA-2026:3083. After applying the update, a system reboot is required for the fixes to take effect. No additional mitigations are specified or required beyond applying the official update.
Red Hat Security Advisory: kernel security update
Description
Multiple use-after-free vulnerabilities have been identified in the Linux kernel packages used by Red Hat Enterprise Linux 8. These vulnerabilities affect components such as page_pool, bridge multicast, smc, mlxsw spectrum_mr, and the teql queueing discipline. One of these issues (CVE-2026-23074) can lead to privilege escalation. Red Hat has issued a security advisory (RHSA-2026:3083) addressing these vulnerabilities with an important kernel update. Systems must be rebooted after applying the update for the fixes to take effect.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory addresses five use-after-free vulnerabilities in the Linux kernel: CVE-2025-38129 in page_pool_recycle_in_ring, CVE-2025-38248 in bridge multicast initialization, CVE-2025-40064 in smc's __pnet_find_base_ndev(), CVE-2025-68800 in mlxsw spectrum_mr multicast route stats update, and CVE-2026-23074 in the teql queueing discipline which can lead to privilege escalation. These vulnerabilities affect Red Hat Enterprise Linux 8 kernel packages and related products. The advisory provides updated kernel packages that fix these issues. A system reboot is required to apply the updates fully.
Potential Impact
The vulnerabilities are use-after-free bugs that can cause memory corruption, potentially leading to system instability or privilege escalation in the case of CVE-2026-23074. Exploitation could allow attackers to escalate privileges on affected systems. No known exploits in the wild have been reported at the time of this advisory. The security impact is rated as Important by Red Hat.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these use-after-free vulnerabilities. Users of Red Hat Enterprise Linux 8 and related products should apply the kernel update provided in advisory RHSA-2026:3083. After applying the update, a system reboot is required for the fixes to take effect. No additional mitigations are specified or required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:3083
- Cve Count
- 5
- Additional Cves
- ["CVE-2025-38248","CVE-2025-40064","CVE-2025-68800","CVE-2026-23074"]
- Cvss Version
- null
Threat ID: 6a32cf499f87a2db092a6685
Added to database: 6/17/2026, 4:46:01 PM
Last enriched: 6/17/2026, 5:06:14 PM
Last updated: 6/17/2026, 7:25:28 PM
Views: 4
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