Red Hat Security Advisory: kernel security update
Red Hat issued a security advisory for multiple vulnerabilities in the Linux kernel packages included in Red Hat Enterprise Linux 9. The update addresses five distinct security issues affecting kernel components such as drm/xe, smb client, drm/vmwgfx, usb dwc3, and libceph. These vulnerabilities include compliance with safe access rules, verification of SMB client data parameters, command header size validation, race condition fixes, and use-after-free corrections. The advisory rates the update as important and requires a system reboot after applying the patches.
AI Analysis
Technical Summary
This Red Hat security advisory (RHSA-2026:0793) covers five kernel vulnerabilities identified by CVE IDs CVE-2025-38703, CVE-2025-39933, CVE-2025-40277, CVE-2025-68285, and CVE-2025-68287. The issues affect various kernel subsystems: drm/xe dma-fences compliance with safe access rules; SMB client recv_done function verifying data_offset, data_length, and remaining_data_length; drm/vmwgfx command header size validation against SVGA_CMD_MAX_DATASIZE; a race condition in usb dwc3 between concurrent dwc3_remove_requests() calls; and a potential use-after-free in libceph's have_mon_and_osd_map(). Red Hat has released updated kernel packages for Red Hat Enterprise Linux 9 and related variants. The advisory instructs users to apply the update and reboot systems to mitigate these vulnerabilities.
Potential Impact
The vulnerabilities affect the Linux kernel core components, potentially leading to unsafe memory access, race conditions, and use-after-free bugs. These issues could result in system instability, privilege escalation, or denial of service if exploited. The advisory classifies the overall impact as important (high severity). No known exploits in the wild have been reported at the time of publication.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users should apply the security update for Red Hat Enterprise Linux 9 as described in the advisory (https://access.redhat.com/articles/11258) and reboot their systems to ensure the fixes take effect. This is the official and recommended remediation.
Red Hat Security Advisory: kernel security update
Description
Red Hat issued a security advisory for multiple vulnerabilities in the Linux kernel packages included in Red Hat Enterprise Linux 9. The update addresses five distinct security issues affecting kernel components such as drm/xe, smb client, drm/vmwgfx, usb dwc3, and libceph. These vulnerabilities include compliance with safe access rules, verification of SMB client data parameters, command header size validation, race condition fixes, and use-after-free corrections. The advisory rates the update as important and requires a system reboot after applying the patches.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory (RHSA-2026:0793) covers five kernel vulnerabilities identified by CVE IDs CVE-2025-38703, CVE-2025-39933, CVE-2025-40277, CVE-2025-68285, and CVE-2025-68287. The issues affect various kernel subsystems: drm/xe dma-fences compliance with safe access rules; SMB client recv_done function verifying data_offset, data_length, and remaining_data_length; drm/vmwgfx command header size validation against SVGA_CMD_MAX_DATASIZE; a race condition in usb dwc3 between concurrent dwc3_remove_requests() calls; and a potential use-after-free in libceph's have_mon_and_osd_map(). Red Hat has released updated kernel packages for Red Hat Enterprise Linux 9 and related variants. The advisory instructs users to apply the update and reboot systems to mitigate these vulnerabilities.
Potential Impact
The vulnerabilities affect the Linux kernel core components, potentially leading to unsafe memory access, race conditions, and use-after-free bugs. These issues could result in system instability, privilege escalation, or denial of service if exploited. The advisory classifies the overall impact as important (high severity). No known exploits in the wild have been reported at the time of publication.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users should apply the security update for Red Hat Enterprise Linux 9 as described in the advisory (https://access.redhat.com/articles/11258) and reboot their systems to ensure the fixes take effect. This is the official and recommended remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:0793
- Cve Count
- 5
- Additional Cves
- ["CVE-2025-39933","CVE-2025-40277","CVE-2025-68285","CVE-2025-68287"]
- Cvss Version
- null
Threat ID: 6a3da1ca4853345fc18224b7
Added to database: 06/25/2026, 21:46:50 UTC
Last enriched: 06/25/2026, 22:02:19 UTC
Last updated: 07/03/2026, 08:51:21 UTC
Views: 13
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