FKIE_CVE-2025-39978

Vulnerability from fkie_nvd - Published: 2025-10-15 08:15 - Updated: 2026-06-17 09:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() This code calls kfree_rcu(new_node, rcu) and then dereferences "new_node" and then dereferences it on the next line. Two lines later, we take a mutex so I don't think this is an RCU safe region. Re-order it to do the dereferences before queuing up the free.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5723120423a753a220b8b2954b273838b9d7e74a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a8a63f27c3a8a3714210d32b12fd0f16d0337414
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c41b2941a024d4ec7c768e16ffb10a74b188fced
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d9c70e93ec5988ab07ad2a92d9f9d12867f02c56
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df2c071061ed52d2225d97b212d27ecedf456b8a
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5723120423a753a220b8b2954b273838b9d7e74a",
              "status": "affected",
              "version": "68fbff68dbea35f9e6f7649dd22fce492a5aedac",
              "versionType": "git"
            },
            {
              "lessThan": "df2c071061ed52d2225d97b212d27ecedf456b8a",
              "status": "affected",
              "version": "68fbff68dbea35f9e6f7649dd22fce492a5aedac",
              "versionType": "git"
            },
            {
              "lessThan": "c41b2941a024d4ec7c768e16ffb10a74b188fced",
              "status": "affected",
              "version": "68fbff68dbea35f9e6f7649dd22fce492a5aedac",
              "versionType": "git"
            },
            {
              "lessThan": "a8a63f27c3a8a3714210d32b12fd0f16d0337414",
              "status": "affected",
              "version": "68fbff68dbea35f9e6f7649dd22fce492a5aedac",
              "versionType": "git"
            },
            {
              "lessThan": "d9c70e93ec5988ab07ad2a92d9f9d12867f02c56",
              "status": "affected",
              "version": "68fbff68dbea35f9e6f7649dd22fce492a5aedac",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.155",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: Fix potential use after free in otx2_tc_add_flow()\n\nThis code calls kfree_rcu(new_node, rcu) and then dereferences \"new_node\"\nand then dereferences it on the next line.  Two lines later, we take\na mutex so I don\u0027t think this is an RCU safe region.  Re-order it to do\nthe dereferences before queuing up the free."
    }
  ],
  "id": "CVE-2025-39978",
  "lastModified": "2026-06-17T09:18:56.807",
  "metrics": {},
  "published": "2025-10-15T08:15:35.640",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5723120423a753a220b8b2954b273838b9d7e74a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a8a63f27c3a8a3714210d32b12fd0f16d0337414"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c41b2941a024d4ec7c768e16ffb10a74b188fced"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d9c70e93ec5988ab07ad2a92d9f9d12867f02c56"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/df2c071061ed52d2225d97b212d27ecedf456b8a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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