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CVE-2026-89582 (GCVE-0-2026-89582)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:44 – Updated: 2026-09-14 12:01
VLAI
Title
bnx2x: fix double free in bnx2x_init_firmware() error path
Summary
In the Linux kernel, the following vulnerability has been resolved: bnx2x: fix double free in bnx2x_init_firmware() error path bnx2x_init_firmware() frees bp->init_ops, bp->init_data and bp->init_ops_offsets in its error path without setting them to NULL. The cleanup function bnx2x_release_firmware() frees the same three pointers unconditionally, so if init_firmware fails and release_firmware is later called (e.g. from __bnx2x_remove or through the function state machine), all three are freed a second time. Set each pointer to NULL after kfree() in the error path so that the subsequent kfree(NULL) in bnx2x_release_firmware() is a safe no-op.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 94a78b79cb5f14c09a42522738d6694c6a1cdd20 , < 770715784b689749014ce193ef986b706fe8f51c (git)
Affected: 94a78b79cb5f14c09a42522738d6694c6a1cdd20 , < c44e5d6c3189241d5f791bc7b1eddde6b92f802c (git)
Affected: 94a78b79cb5f14c09a42522738d6694c6a1cdd20 , < 07d4516e3eb1fcde4a5db29eb556cdb0ebba6265 (git)
Affected: 94a78b79cb5f14c09a42522738d6694c6a1cdd20 , < ac280f6872e75df49f3004505bcddff91d9e5362 (git)
Affected: 94a78b79cb5f14c09a42522738d6694c6a1cdd20 , < dc98e727b9cfc5e19c796bf893878153f00b222b (git)
Affected: 94a78b79cb5f14c09a42522738d6694c6a1cdd20 , < 4d36e38e48340a1ccf92a98c7a22d07a954e5aa3 (git)
Affected: 94a78b79cb5f14c09a42522738d6694c6a1cdd20 , < a142c024f07d623e2b6b25943f6c36d4b6b0b4c6 (git)
Affected: 94a78b79cb5f14c09a42522738d6694c6a1cdd20 , < d2796ffe38cb4155afe0eab23636295b096c27a5 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.31
Unaffected: 0 , < 2.6.31 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.109 , ≤ 6.12.* (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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              "version": "7.3-rc1",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnx2x: fix double free in bnx2x_init_firmware() error path\n\nbnx2x_init_firmware() frees bp-\u003einit_ops, bp-\u003einit_data and\nbp-\u003einit_ops_offsets in its error path without setting them to NULL.\nThe cleanup function bnx2x_release_firmware() frees the same three\npointers unconditionally, so if init_firmware fails and\nrelease_firmware is later called (e.g. from __bnx2x_remove or through\nthe function state machine), all three are freed a second time.\n\nSet each pointer to NULL after kfree() in the error path so that the\nsubsequent kfree(NULL) in bnx2x_release_firmware() is a safe no-op."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T12:01:10.734Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/770715784b689749014ce193ef986b706fe8f51c"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89582",
    "datePublished": "2026-09-11T19:44:48.336Z",
    "dateReserved": "2026-09-11T19:38:34.728Z",
    "dateUpdated": "2026-09-14T12:01:10.734Z",
    "state": "PUBLISHED"
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      "date": "2026-09-16",
      "epss": "0.00176",
      "percentile": "0.07433"
    },
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      "cve": "CVE-2026-89582",
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      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-09-15T05:02:38+00:00",
      "cve": "CVE-2026-89582",
      "id": "CVE-2026-89582",
      "initial_release_date": "2026-09-11T19:44:48.336000+00:00",
      "product_status:known_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bnx2x: Double Free Vulnerability in Linux Kernel leading to Denial of Service or Code Execution",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89582.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-12T16:25:41Z",
      "cve": "CVE-2026-89582",
      "id": "CVE-2026-89582",
      "initial_release_date": "2026-09-12T16:25:41Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89582",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-89582.json",
      "version": "2"
    }
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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