CVE-2026-72282

KVM: Move kvm_io_bus_get_dev() locking responsibilities to callers

State: Published
Severity: 7.8 High
Published: Aug 15, 2026
Updated: Oct 16, 2026
Reserved: Aug 9, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	8a39d00670f0792c1186e442e1dd28fe0326f2ee to before f398b7d92cd999191249830b9171c9bd787a9a91Affected 8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 1b4a3c2f0509e7b0e65667f3c36676a849ee2755Affected 8a39d00670f0792c1186e442e1dd28fe0326f2ee to before cfe107b02a3c3f049e0dc15b6a36625f048eda2aAffected 8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 90d35d2b8e47afd68fe2a4dd0eeb60bc71641775Affected 8a39d00670f0792c1186e442e1dd28fe0326f2ee to before e01071ea006c9b952125ed8b0cc90ac7bd356cceAffected 8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 7099e7148f81c605bbc319b16ce0131540341560Affected 8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 0cbae0e296d27ce4c4cce83e34d40c2bfd8133aaAffected 8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 3a07249981629ace483ebbef81ef6b34c2d2afecAffected
LinuxLinux	4.8Affected before 4.8Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

8a39d00670f0792c1186e442e1dd28fe0326f2ee to before f398b7d92cd999191249830b9171c9bd787a9a91Affected
8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 1b4a3c2f0509e7b0e65667f3c36676a849ee2755Affected
8a39d00670f0792c1186e442e1dd28fe0326f2ee to before cfe107b02a3c3f049e0dc15b6a36625f048eda2aAffected
8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 90d35d2b8e47afd68fe2a4dd0eeb60bc71641775Affected
8a39d00670f0792c1186e442e1dd28fe0326f2ee to before e01071ea006c9b952125ed8b0cc90ac7bd356cceAffected
8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 7099e7148f81c605bbc319b16ce0131540341560Affected
8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 0cbae0e296d27ce4c4cce83e34d40c2bfd8133aaAffected
8a39d00670f0792c1186e442e1dd28fe0326f2ee to before 3a07249981629ace483ebbef81ef6b34c2d2afecAffected

LinuxLinux

4.8Affected
before 4.8Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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