Linux azure: In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create()… (CVE-2025-37849)
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create() fails to share the vCPU page with the hypervisor, we propagate the error back to the ioctl but leave the vGIC vCPU data initialised. Note only does this leak the corresponding memory when the vCPU is destroyed but it can also lead to use-after-free if the redistributor device handling tries to walk into the vCPU. Add the missing cleanup to kvm_arch_vcpu_create(), ensuring that the vGIC vCPU structures are destroyed on error.
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.
Linux azure: In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create()… (CVE-2025-37849)
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create() fails to share the vCPU page with the hypervisor, we propagate the error back to the ioctl but leave the vGIC vCPU data initialised. Note only does this leak the corresponding memory when the vCPU is destroyed but it can also lead to use-after-free if the redistributor device handling tries to walk into the vCPU. Add the missing cleanup to kvm_arch_vcpu_create(), ensuring that the vGIC vCPU structures are destroyed on error.
CVSS v3.1
Score 8.8high
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
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"]
Threat ID: 6a3da1c04853345fc181d80e
Added to database: 06/25/2026, 21:46:40 UTC
Last enriched: 06/25/2026, 21:52:34 UTC
Last updated: 09/10/2026, 19:24:56 UTC
Views: 96
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.