CVE-2026-98465
In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM: Serialize IMSIC attributes with vCPU migration KVM device ioctls are not serialized against KVM_RUN. As a result, kvm_riscv_aia_imsic_rw_attr() can snapshot the physical CPU and HGEI of an IMSIC VS-file before a concurrent vCPU migration releases it. The HGEI can then be allocated to another vCPU before imsic_vsfile_rw() uses the stale tuple. A GET or SET attribute may consequently access the new owner's interrupt file. Serialize the entire IMSIC attribute operation with the target vCPU mutex. This prevents the VS-file from being migrated and recycled until the attribute access completes. Acquire the mutex killably so that the device ioctl remains interruptible while waiting for KVM_RUN to finish.
Affected versions
Linux kernel versions
6.5
and later are affected. Fixed in
6.12.112,
6.18.55,
7.2.9,
7.3
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-98465?
CVE-2026-98465 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.5 onward and has been patched in 6.12.112, 6.18.55, 7.2.9 and others. CVE-2026-98465 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-98465?
Yes. CVE-2026-98465 has been patched. Fixed versions include 6.12.112, 6.18.55, 7.2.9 and others. If you are running Linux kernel 6.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-98465 actively exploited?
No. CVE-2026-98465 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.