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: proc: fix UAF in proc_get_inode() (CVE-2025-21999) * kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238) * kernel: Linux kernel: Denial of service and memory corruption in RDMA umad (CVE-2026-23243) * kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401) * kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532) * kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-46300) * kernel: Read root-owned files as an unprivileged user (CVE-2026-46333) 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
Red Hat has released a security update for the Linux kernel packages in Red Hat Enterprise Linux 9.4 Extended Update Support and related products. The update addresses multiple vulnerabilities including use-after-free bugs (CVE-2025-21999, CVE-2026-23270, CVE-2026-31419), denial of service and memory corruption (CVE-2026-23243), improper resource freeing (CVE-2025-68741), and other kernel subsystem issues. These fixes mitigate risks such as denial of service and potential privilege escalation. The advisory references multiple CVEs and instructs users to apply the update and reboot the system for the fixes to take effect.
Potential Impact
The vulnerabilities fixed in this update include use-after-free conditions that may lead to denial of service or privilege escalation, denial of service and memory corruption in RDMA, and improper resource handling that could cause system instability. The overall impact is rated as Important by Red Hat, indicating a high security risk if left unpatched.
Mitigation Recommendations
Red Hat has released an official security update for affected kernel packages in Red Hat Enterprise Linux 9.4 Extended Update Support and related products. Users should apply the update as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot their systems to ensure the fixes take effect. No additional mitigation steps are 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: proc: fix UAF in proc_get_inode() (CVE-2025-21999) * kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238) * kernel: Linux kernel: Denial of service and memory corruption in RDMA umad (CVE-2026-23243) * kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401) * kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532) * kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-46300) * kernel: Read root-owned files as an unprivileged user (CVE-2026-46333) 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
Red Hat has released a security update for the Linux kernel packages in Red Hat Enterprise Linux 9.4 Extended Update Support and related products. The update addresses multiple vulnerabilities including use-after-free bugs (CVE-2025-21999, CVE-2026-23270, CVE-2026-31419), denial of service and memory corruption (CVE-2026-23243), improper resource freeing (CVE-2025-68741), and other kernel subsystem issues. These fixes mitigate risks such as denial of service and potential privilege escalation. The advisory references multiple CVEs and instructs users to apply the update and reboot the system for the fixes to take effect.
Potential Impact
The vulnerabilities fixed in this update include use-after-free conditions that may lead to denial of service or privilege escalation, denial of service and memory corruption in RDMA, and improper resource handling that could cause system instability. The overall impact is rated as Important by Red Hat, indicating a high security risk if left unpatched.
Mitigation Recommendations
Red Hat has released an official security update for affected kernel packages in Red Hat Enterprise Linux 9.4 Extended Update Support and related products. Users should apply the update as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot their systems to ensure the fixes take effect. No additional mitigation steps are 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-2025:9348
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-23150","CVE-2025-37738","CVE-2025-38234"]
- Cvss Version
- null
Threat ID: 6a160985e29bf47b50651e28
Added to database: 05/26/2026, 20:58:45 UTC
Last enriched: 07/07/2026, 00:44:22 UTC
Last updated: 07/25/2026, 20:51:59 UTC
Views: 104
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