CVE-2022-3176 (GCVE-0-2022-3176)

Vulnerability from cvelistv5 – Published: 2022-09-16 13:55 – Updated: 2025-04-21 13:49
VLAI
Title
Use-after-free in io_uring in Linux Kernel
Summary
There exists a use-after-free in io_uring in the Linux kernel. Signalfd_poll() and binder_poll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the io_uring poll doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with io_uring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-21 13:36 UTC
CWE
Assigner
Google CNA under the Google root
CNA scorecard C 75/100 over 33 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Kernel Affected: unspecified , < fc78b2fc21f10c4c9c4d5d659a685710ffa63659 (custom)
guessed Create a notification for this product.
Date Public
2022-08-31 00:00
Credits
Bing-Jhong Billy Jheng <billy@starlabs.sg>
Show details on NVD website
To clipboard 

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                "mailing-list"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"
            },
            {
              "url": "https://security.netapp.com/advisory/ntap-20230216-0003/"
            }
          ],
          "source": {
            "discovery": "EXTERNAL"
          },
          "title": "Use-after-free in io_uring in Linux Kernel",
          "x_generator": {
            "engine": "Vulnogram 0.0.9"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
        "assignerShortName": "Google",
        "cveId": "CVE-2022-3176",
        "datePublished": "2022-09-16T13:55:09.907Z",
        "dateReserved": "2022-09-12T00:00:00.000Z",
        "dateUpdated": "2025-04-21T13:49:18.998Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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