# CVE-2022-49791: io_uring: fix multishot accept request leaks

Status: published. Published: 2025-05-01. Updated: 2026-11-05.

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

io_uring: fix multishot accept request leaks

Having REQ_F_POLLED set doesn't guarantee that the request is
executed as a multishot from the polling path. Fortunately for us, if
the code thinks it's multishot issue when it's not, it can only ask to
skip completion so leaking the request. Use issue_flags to mark
multipoll issues.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ 390ed29b5e425ba00da2b6113b74a14949f71b02; < 0e4626de856ef8f25ecd9c716e76d4f95ce95639 (affected, git); ≥ 390ed29b5e425ba00da2b6113b74a14949f71b02; < 91482864768a874c4290ef93b84a78f4f1dac51b (affected, git). Source: CNA: Linux
- Linux / Linux: 5.19 (affected); ≥ 0; < 5.19 (unaffected, semver); ≥ 6.0.10; ≤ 6.0.* (unaffected, semver); ≥ 6.1; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.17% as of 2026-11-05; percentile 6.47%

- 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/0e4626de856ef8f25ecd9c716e76d4f95ce95639 (CNA: Linux)

- https://git.kernel.org/stable/c/91482864768a874c4290ef93b84a78f4f1dac51b (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2022-49791; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2022-49791; retrieved 2026-11-05; source updated Not reported

Revision: 00ddee8e8afc854f71893adca2bec026e6a2d266a4cda0340e3f71005237635f

Canonical: https://y2.dev/cve/CVE-2022-49791

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