CVE-2026-97434 (GCVE-0-2026-97434)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:03 – Updated: 2026-09-25 12:44
VLAI
Title
dpaa2-switch: fix handling of NAPI on the remove path
Summary
In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: fix handling of NAPI on the remove path All the NAPI instances for a DPSW device are attached to the first switch port's net_device but shared by all ports. The NAPI instances get disabled only once the last port goes down. This causes an issue on the .remove() path where each port is unregistered and freed one at a time, causing the NAPI instances to be deleted even though they are not disabled. In order to avoid this, split up the unregister_netdev() calls from the free_netdev() so that we make sure all ports go down before we attempt a deletion of NAPI instances. Also, make the netif_napi_del() explicit as it is on the .probe() path.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0b1b71370458860579831e77485883fcf2e8fbbe , < 569df157eb874cb3b50554d73b89f31599397b42 (git)
Affected: 0b1b71370458860579831e77485883fcf2e8fbbe , < 6518f87771c8833e587bd9881346fa759651c2ae (git)
Affected: 0b1b71370458860579831e77485883fcf2e8fbbe , < e23d7c8c1d4ba435c457d7ffb2669175ec819b07 (git)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: fix handling of NAPI on the remove path\n\nAll the NAPI instances for a DPSW device are attached to the first\nswitch port\u0027s net_device but shared by all ports. The NAPI instances get\ndisabled only once the last port goes down.\n\nThis causes an issue on the .remove() path where each port is\nunregistered and freed one at a time, causing the NAPI instances to be\ndeleted even though they are not disabled.\n\nIn order to avoid this, split up the unregister_netdev() calls from the\nfree_netdev() so that we make sure all ports go down before we attempt\na deletion of NAPI instances. Also, make the netif_napi_del() explicit\nas it is on the .probe() path."
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          "url": "https://git.kernel.org/stable/c/e23d7c8c1d4ba435c457d7ffb2669175ec819b07"
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    "dateReserved": "2026-09-24T14:53:16.869Z",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: fix handling of NAPI on the remove path\n\nAll the NAPI instances for a DPSW device are attached to the first\nswitch port\u0027s net_device but shared by all ports. The NAPI instances get\ndisabled only once the last port goes down.\n\nThis causes an issue on the .remove() path where each port is\nunregistered and freed one at a time, causing the NAPI instances to be\ndeleted even though they are not disabled.\n\nIn order to avoid this, split up the unregister_netdev() calls from the\nfree_netdev() so that we make sure all ports go down before we attempt\na deletion of NAPI instances. Also, make the netif_napi_del() explicit\nas it is on the .probe() path."
          }
        ],
        "id": "CVE-2026-97434",
        "lastModified": "2026-09-25T13:17:27.030",
        "metrics": {},
        "published": "2026-09-24T17:17:21.453",
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      "aggregate_severity": "not set",
      "current_release_date": "2026-09-24T23:46:08Z",
      "cve": "CVE-2026-97434",
      "id": "CVE-2026-97434",
      "initial_release_date": "2026-09-24T23:46:08Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-97434",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-97434.json",
      "version": "2"
    }
  }
}



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