Red Hat Security Advisory: kernel security, bug fix, and enhancement update
This Red Hat security advisory addresses multiple vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 10. The issues include out-of-bounds writes in the ALSA usb-audio driver, use-after-free in ALSA aloop during format changes, double free in RDMA vmw_pvrdma, and error path fall-through in RDMA mlx5 driver. These vulnerabilities have been fixed in an updated kernel package that requires a system reboot to take effect. The update also includes various bug fixes and enhancements unrelated to security. The advisory rates the security impact as Important and does not provide CVSS scores. The affected products include various architectures of Red Hat Enterprise Linux 10 and related CodeReady Linux Builder variants.
AI Analysis
Technical Summary
The advisory covers four security fixes in the Linux kernel for Red Hat Enterprise Linux 10: CVE-2026-43279 adds a sanity check to prevent out-of-bounds writes in the ALSA usb-audio silencing code; CVE-2026-46090 fixes a use-after-free in the ALSA aloop driver during format-change stop; CVE-2026-46189 addresses a double free error in the RDMA vmw_pvrdma driver's error path; and CVE-2026-46176 corrects an error path fall-through in the RDMA mlx5 driver initialization. These vulnerabilities could lead to memory corruption or instability. The advisory provides updated kernel packages to remediate these issues and requires rebooting the system for the fixes to apply. Additional non-security bug fixes and enhancements are also included in this update.
Potential Impact
The vulnerabilities involve memory corruption issues such as out-of-bounds writes, use-after-free, and double free conditions in kernel drivers related to ALSA audio and RDMA subsystems. These issues could potentially lead to system crashes or privilege escalation if exploited. The advisory classifies the security impact as Important, indicating a high severity level but does not confirm known exploits in the wild.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users should apply the provided kernel update for Red Hat Enterprise Linux 10 and reboot their systems to ensure the fixes take effect. Refer to the official Red Hat advisory RHSA-2026:33685 and the update instructions at https://access.redhat.com/articles/11258 for detailed remediation steps.
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Description
This Red Hat security advisory addresses multiple vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 10. The issues include out-of-bounds writes in the ALSA usb-audio driver, use-after-free in ALSA aloop during format changes, double free in RDMA vmw_pvrdma, and error path fall-through in RDMA mlx5 driver. These vulnerabilities have been fixed in an updated kernel package that requires a system reboot to take effect. The update also includes various bug fixes and enhancements unrelated to security. The advisory rates the security impact as Important and does not provide CVSS scores. The affected products include various architectures of Red Hat Enterprise Linux 10 and related CodeReady Linux Builder variants.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The advisory covers four security fixes in the Linux kernel for Red Hat Enterprise Linux 10: CVE-2026-43279 adds a sanity check to prevent out-of-bounds writes in the ALSA usb-audio silencing code; CVE-2026-46090 fixes a use-after-free in the ALSA aloop driver during format-change stop; CVE-2026-46189 addresses a double free error in the RDMA vmw_pvrdma driver's error path; and CVE-2026-46176 corrects an error path fall-through in the RDMA mlx5 driver initialization. These vulnerabilities could lead to memory corruption or instability. The advisory provides updated kernel packages to remediate these issues and requires rebooting the system for the fixes to apply. Additional non-security bug fixes and enhancements are also included in this update.
Potential Impact
The vulnerabilities involve memory corruption issues such as out-of-bounds writes, use-after-free, and double free conditions in kernel drivers related to ALSA audio and RDMA subsystems. These issues could potentially lead to system crashes or privilege escalation if exploited. The advisory classifies the security impact as Important, indicating a high severity level but does not confirm known exploits in the wild.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users should apply the provided kernel update for Red Hat Enterprise Linux 10 and reboot their systems to ensure the fixes take effect. Refer to the official Red Hat advisory RHSA-2026:33685 and the update instructions at https://access.redhat.com/articles/11258 for detailed remediation steps.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:33685
- Cve Count
- 4
- Additional Cves
- ["CVE-2026-46090","CVE-2026-46176","CVE-2026-46189"]
- Cvss Version
- null
Threat ID: 6a46ed1527e9c79719447090
Added to database: 07/02/2026, 22:58:29 UTC
Last enriched: 07/02/2026, 23:35:13 UTC
Last updated: 07/02/2026, 23:51:17 UTC
Views: 2
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