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CVE-2026-72282

HIGHCVSS 7.8/10EPSS 0.22%

Last modified

CVE-2026-72282 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: KVM: Move kvm_io_bus_get_dev() locking responsibilities to callers kvm_io_bus_get_dev() returns a device that is only matched by the address, and nothing else. This can cause a lifetime issue if the matched device is not the expected type, as by the time the caller can introspect the object, it might be gone (the srcu lock having been dropped). Given that there is only a single user of this helper, the simplest option is to move the locking responsibility to the caller, which can keep the srcu lock held for as long as it wants. Note that this aligns with other kvm_io_bus*() helpers, which already require the srcu lock to be held by the callers.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: Move kvm_io_bus_get_dev() locking responsibilities to callers kvm_io_bus_get_dev() returns a device that is only matched by the address, and nothing else. This can cause a lifetime issue if the matched device is not the expected type, as by the time the caller can introspect the object, it might be gone (the srcu lock having been dropped). Given that there is only a single user of this helper, the simplest option is to move the locking responsibility to the caller, which can keep the srcu lock held for as long as it wants. Note that this aligns with other kvm_io_bus*() helpers, which already require the srcu lock to be held by the callers.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.22%

12.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 8a39d00670f0792c1186e442e1dd28fe0326f2ee, < f398b7d92cd999191249830b9171c9bd787a9a91; >= 8a39d00670f0792c1186e442e1dd28fe0326f2ee, < 1b4a3c2f0509e7b0e65667f3c36676a849ee2755; >= 8a39d00670f0792c1186e442e1dd28fe0326f2ee, < cfe107b02a3c3f049e0dc15b6a36625f048eda2a; >= 8a39d00670f0792c1186e442e1dd28fe0326f2ee, < 90d35d2b8e47afd68fe2a4dd0eeb60bc71641775; >= 8a39d00670f0792c1186e442e1dd28fe0326f2ee, < e01071ea006c9b952125ed8b0cc90ac7bd356cce; >= 8a39d00670f0792c1186e442e1dd28fe0326f2ee, < 7099e7148f81c605bbc319b16ce0131540341560; >= 8a39d00670f0792c1186e442e1dd28fe0326f2ee, < 0cbae0e296d27ce4c4cce83e34d40c2bfd8133aa; >= 8a39d00670f0792c1186e442e1dd28fe0326f2ee, < 3a07249981629ace483ebbef81ef6b34c2d2afec
LinuxLinux4.8

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72282?
In the Linux kernel, the following vulnerability has been resolved: KVM: Move kvm_io_bus_get_dev() locking responsibilities to callers kvm_io_bus_get_dev() returns a device that is only matched by the address, and nothing else. This can cause a lifetime issue if the matched device is not the expected type, as by the time the caller can introspect the object, it might be gone (the srcu lock having been dropped). Given that there is only a single user of this helper, the simplest option is to move the locking responsibility to the caller, which can keep the srcu lock held for as long as it wants. Note that this aligns with other kvm_io_bus*() helpers, which already require the srcu lock to be held by the callers.
How severe is CVE-2026-72282?
CVE-2026-72282 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72282?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST