Red Hat Security Advisory: kernel-rt security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * 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
The advisory covers security fixes for the Linux kernel in Red Hat Enterprise Linux 8.4. It includes a fix for a use-after-free vulnerability in the CAN raw socket implementation (CVE-2026-31532), a local privilege escalation vulnerability stemming from a variant of the Dirty Frag vulnerability in the ESP/XFRM subsystem (CVE-2026-46300), and a vulnerability that allows unprivileged users to read files owned by root (CVE-2026-46333). These issues affect the core Linux kernel packages and are addressed by updated kernel packages provided by Red Hat. The update requires a reboot to apply the fixes.
Potential Impact
Successful exploitation of these vulnerabilities could lead to local privilege escalation, allowing attackers to gain higher privileges on affected systems, and unauthorized access to root-owned files by unprivileged users. The use-after-free bug could cause system instability or crashes. These vulnerabilities affect the security and integrity of the Linux kernel on Red Hat Enterprise Linux 8.4 systems.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 8.4 should apply the security update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot their systems to ensure the fixes take effect. No additional mitigations are indicated by the vendor advisory.
Red Hat Security Advisory: kernel-rt security update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * 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
The advisory covers security fixes for the Linux kernel in Red Hat Enterprise Linux 8.4. It includes a fix for a use-after-free vulnerability in the CAN raw socket implementation (CVE-2026-31532), a local privilege escalation vulnerability stemming from a variant of the Dirty Frag vulnerability in the ESP/XFRM subsystem (CVE-2026-46300), and a vulnerability that allows unprivileged users to read files owned by root (CVE-2026-46333). These issues affect the core Linux kernel packages and are addressed by updated kernel packages provided by Red Hat. The update requires a reboot to apply the fixes.
Potential Impact
Successful exploitation of these vulnerabilities could lead to local privilege escalation, allowing attackers to gain higher privileges on affected systems, and unauthorized access to root-owned files by unprivileged users. The use-after-free bug could cause system instability or crashes. These vulnerabilities affect the security and integrity of the Linux kernel on Red Hat Enterprise Linux 8.4 systems.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 8.4 should apply the security update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot their systems to ensure the fixes take effect. No additional mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19711
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-46300","CVE-2026-46333"]
- Cvss Version
- null
Threat ID: 6a160958e29bf47b5061f2b1
Added to database: 05/26/2026, 20:58:00 UTC
Last enriched: 07/10/2026, 12:50:37 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 202
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