# CVE-2026-72306: vduse: Fix race in vduse_dev_msg_sync and vduse_dev_read_iter

Status: published. Published: 2026-08-15. Updated: 2026-11-06.

In the Linux kernel, the following vulnerability has been resolved:

vduse: Fix race in vduse_dev_msg_sync and vduse_dev_read_iter

There is one race case in vduse_dev_msg_sync and vduse_dev_read_iter:

vduse_dev_read_iter():
    lock(msg_lock);
    dequeue_msg(send_list);
    unlock(msg_lock);
vduse_dev_msg_sync():
    wait_timeout() finish
    lock(msg_lock);
    check msg->complete is false
        list_del(msg);   <- double list_del() crash!

To fix this case, we shall ensure vduse_msg is on send_list or recv_list
outside the msg_lock critical section.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ c8a6153b6c59d95c0e091f053f6f180952ade91e; < c83ad3dfa6d9953d5ce6839416bf5a1bfc50285a (affected, git); ≥ c8a6153b6c59d95c0e091f053f6f180952ade91e; < 09723f26ed801c083e914cec4cc0e1af4b933dc7 (affected, git); ≥ c8a6153b6c59d95c0e091f053f6f180952ade91e; < d7e7c813834c6c05c26033456ab7169e2f9c99eb (affected, git); ≥ c8a6153b6c59d95c0e091f053f6f180952ade91e; < 3755965adbb617f4283ac6ccd351ed0676843cba (affected, git); ≥ c8a6153b6c59d95c0e091f053f6f180952ade91e; < d8715b5a8fdb23fef576700e71d0c253dbeddad4 (affected, git); ≥ c8a6153b6c59d95c0e091f053f6f180952ade91e; < 8062ff9d366c4bc4ae775e14eac9a769f20c60dd (affected, git); ≥ c8a6153b6c59d95c0e091f053f6f180952ade91e; < ae9c13b6fd79087cc5a216ee1649b6f012c2a238 (affected, git). Source: CNA: Linux
- Linux / Linux: 5.15 (affected); ≥ 0; < 5.15 (unaffected, semver); ≥ 5.15.212; ≤ 5.15.* (unaffected, semver); ≥ 6.1.178; ≤ 6.1.* (unaffected, semver); ≥ 6.6.145; ≤ 6.6.* (unaffected, semver); ≥ 6.12.97; ≤ 6.12.* (unaffected, semver); ≥ 6.18.40; ≤ 6.18.* (unaffected, semver); ≥ 7.1.5; ≤ 7.1.* (unaffected, semver); ≥ 7.2; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.21% as of 2026-11-06; percentile 11.96%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/c83ad3dfa6d9953d5ce6839416bf5a1bfc50285a (CNA: Linux)

- https://git.kernel.org/stable/c/09723f26ed801c083e914cec4cc0e1af4b933dc7 (CNA: Linux)

- https://git.kernel.org/stable/c/d7e7c813834c6c05c26033456ab7169e2f9c99eb (CNA: Linux)

- https://git.kernel.org/stable/c/3755965adbb617f4283ac6ccd351ed0676843cba (CNA: Linux)

- https://git.kernel.org/stable/c/d8715b5a8fdb23fef576700e71d0c253dbeddad4 (CNA: Linux)

- https://git.kernel.org/stable/c/8062ff9d366c4bc4ae775e14eac9a769f20c60dd (CNA: Linux)

- https://git.kernel.org/stable/c/ae9c13b6fd79087cc5a216ee1649b6f012c2a238 (CNA: Linux)

- https://git.kernel.org/stable/c/09723f26ed801c083e914cec4cc0e1af4b933dc7 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/3755965adbb617f4283ac6ccd351ed0676843cba (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/8062ff9d366c4bc4ae775e14eac9a769f20c60dd (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/ae9c13b6fd79087cc5a216ee1649b6f012c2a238 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/c83ad3dfa6d9953d5ce6839416bf5a1bfc50285a (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/d7e7c813834c6c05c26033456ab7169e2f9c99eb (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/d8715b5a8fdb23fef576700e71d0c253dbeddad4 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-72306; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-72306; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-72306; retrieved 2026-11-06; source updated Not reported

Revision: de6dbf0bdf47920b5562808ffd1fd1d7b3a72f16bcc79d31982c04fedf69d059

Canonical: https://y2.dev/cve/CVE-2026-72306

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