CVE-2026-43056 (GCVE-0-2026-43056)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-11 22:16
VLAI
Title
net: mana: fix use-after-free in add_adev() error path
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mana: fix use-after-free in add_adev() error path If auxiliary_device_add() fails, add_adev() jumps to add_fail and calls auxiliary_device_uninit(adev). The auxiliary device has its release callback set to adev_release(), which frees the containing struct mana_adev. Since adev is embedded in struct mana_adev, the subsequent fall-through to init_fail and access to adev->id may result in a use-after-free. Fix this by saving the allocated auxiliary device id in a local variable before calling auxiliary_device_add(), and use that saved id in the cleanup path after auxiliary_device_uninit().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a69839d4327d053b18d8e1b0e7ddeee78db78f4f , < d88541ffd56d62a61e77209080001eddd4d69815 (git)
Affected: a69839d4327d053b18d8e1b0e7ddeee78db78f4f , < 43f5b19fd190fea20d052bc84741b28031d5baa9 (git)
Affected: a69839d4327d053b18d8e1b0e7ddeee78db78f4f , < 5f4061f8225d18695e5afe9bbf1cb7bd673d7872 (git)
Affected: a69839d4327d053b18d8e1b0e7ddeee78db78f4f , < e5a75bf026c686b91a7dc6f9c5caf5016745d1fe (git)
Affected: a69839d4327d053b18d8e1b0e7ddeee78db78f4f , < c4ea7d8907cf72b259bf70bd8c2e791e1c4ff70f (git)
Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T14:28:13+00:00",
      "cve": "CVE-2026-43056",
      "id": "CVE-2026-43056",
      "initial_release_date": "2026-05-01T00:00:00+00:00",
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      "status": "final",
      "title": "kernel: net: mana: fix use-after-free in add_adev() error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43056.json",
      "version": "3"
    },
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      "current_release_date": "2026-05-07T02:19:32Z",
      "cve": "CVE-2026-43056",
      "id": "CVE-2026-43056",
      "initial_release_date": "2026-05-07T02:19:32Z",
      "product_status:known_affected": "72",
      "product_status:known_not_affected": "152",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-43056",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43056.json",
      "version": "2"
    }
  }
}



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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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.