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: KVM: arm64: Tear down vGIC on failed vCPU creation (CVE-2025-37849) * kernel: Linux kernel: Use-after-free in device mapper due to race condition in zone reporting (CVE-2025-38141) * kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init (CVE-2025-38248) * kernel: drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies (CVE-2025-40096) * kernel: NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid (CVE-2025-68349) * kernel: ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() (CVE-2025-71085) 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 six kernel vulnerabilities: CVE-2025-37849 (KVM arm64 vGIC teardown on failed vCPU creation), CVE-2025-38141 (use-after-free in device mapper due to race condition), CVE-2025-38248 (use-after-free in bridge multicast initialization), CVE-2025-40096 (potential double free in DRM scheduler job reservation dependencies), CVE-2025-68349 (NFSv4/pNFS stateid invalidation issue), and CVE-2025-71085 (BUG() in IPv6 skb buffer expansion). These issues could lead to memory corruption or kernel crashes. The advisory provides updated kernel packages for Red Hat Enterprise Linux 10.0 Extended Update Support and related builder products. The update must be installed and the system rebooted to mitigate these vulnerabilities.
Potential Impact
The vulnerabilities include use-after-free and double free conditions that could cause memory corruption, potentially leading to system instability or denial of service. The IPv6 BUG() could cause kernel crashes. The overall security impact is rated moderate by Red Hat. There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
A security update for the kernel packages is available from Red Hat for Red Hat Enterprise Linux 10.0 Extended Update Support and related products. Users should apply the update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot the system for the changes to take effect. This update addresses all listed vulnerabilities.
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: KVM: arm64: Tear down vGIC on failed vCPU creation (CVE-2025-37849) * kernel: Linux kernel: Use-after-free in device mapper due to race condition in zone reporting (CVE-2025-38141) * kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init (CVE-2025-38248) * kernel: drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies (CVE-2025-40096) * kernel: NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid (CVE-2025-68349) * kernel: ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() (CVE-2025-71085) 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
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The advisory covers six kernel vulnerabilities: CVE-2025-37849 (KVM arm64 vGIC teardown on failed vCPU creation), CVE-2025-38141 (use-after-free in device mapper due to race condition), CVE-2025-38248 (use-after-free in bridge multicast initialization), CVE-2025-40096 (potential double free in DRM scheduler job reservation dependencies), CVE-2025-68349 (NFSv4/pNFS stateid invalidation issue), and CVE-2025-71085 (BUG() in IPv6 skb buffer expansion). These issues could lead to memory corruption or kernel crashes. The advisory provides updated kernel packages for Red Hat Enterprise Linux 10.0 Extended Update Support and related builder products. The update must be installed and the system rebooted to mitigate these vulnerabilities.
Potential Impact
The vulnerabilities include use-after-free and double free conditions that could cause memory corruption, potentially leading to system instability or denial of service. The IPv6 BUG() could cause kernel crashes. The overall security impact is rated moderate by Red Hat. There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
A security update for the kernel packages is available from Red Hat for Red Hat Enterprise Linux 10.0 Extended Update Support and related products. Users should apply the update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot the system for the changes to take effect. This update addresses all listed vulnerabilities.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6193
- Cve Count
- 6
- Additional Cves
- ["CVE-2025-38141","CVE-2025-38248","CVE-2025-40096","CVE-2025-68349","CVE-2025-71085"]
- Cvss Version
- null
Threat ID: 6a3da1c04853345fc181d80e
Added to database: 06/25/2026, 21:46:40 UTC
Last enriched: 06/25/2026, 21:52:34 UTC
Last updated: 07/02/2026, 20:51:16 UTC
Views: 24
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