CVE-2026-72282

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8a39d00670f0792c1186e442e1dd28fe0326f2ee < f398b7d92cd999191249830b9171c9bd787a9a91affected
LinuxLinux8a39d00670f0792c1186e442e1dd28fe0326f2ee < 1b4a3c2f0509e7b0e65667f3c36676a849ee2755affected
LinuxLinux8a39d00670f0792c1186e442e1dd28fe0326f2ee < cfe107b02a3c3f049e0dc15b6a36625f048eda2aaffected
LinuxLinux8a39d00670f0792c1186e442e1dd28fe0326f2ee < 90d35d2b8e47afd68fe2a4dd0eeb60bc71641775affected
LinuxLinux8a39d00670f0792c1186e442e1dd28fe0326f2ee < e01071ea006c9b952125ed8b0cc90ac7bd356cceaffected
LinuxLinux8a39d00670f0792c1186e442e1dd28fe0326f2ee < 7099e7148f81c605bbc319b16ce0131540341560affected
LinuxLinux8a39d00670f0792c1186e442e1dd28fe0326f2ee < 0cbae0e296d27ce4c4cce83e34d40c2bfd8133aaaffected
LinuxLinux8a39d00670f0792c1186e442e1dd28fe0326f2ee < 3a07249981629ace483ebbef81ef6b34c2d2afecaffected
LinuxLinux4.8affected
LinuxLinux0 < 4.8unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References