Vulnerability-Lookup

FKIE_CVE-2026-98384

Vulnerability from fkie_nvd - Published: 2026-10-09 08:16 - Updated: 2026-10-09 08:16

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy() sk_protocol lives in struct sock, not in struct sock_common. A timewait or request sock handed to bpf_sock_destroy() by the tcp iterator is neither, so reading sk->sk_protocol runs past the object: ================================================================== BUG: KASAN: slab-out-of-bounds in bpf_sock_destroy+0xc7/0xe0 Read of size 2 at addr ffff8881047d11b4 by task test_progs/428 Tainted: [W]=WARN Call Trace: <TASK> dump_stack_lvl+0x91/0xf0 print_report+0xd1/0x630 kasan_report+0xf3/0x130 __asan_report_load2_noabort+0x14/0x30 bpf_sock_destroy+0xc7/0xe0 bpf_prog_c3dd61f9d9cd9f37_iter_tcp6_timewait+0x9f/0xb7 bpf_iter_run_prog+0x538/0xde0 bpf_iter_tcp_seq_show+0x26b/0x4b0 bpf_seq_read+0x424/0x1210 vfs_read+0x197/0xe40 ksys_read+0x119/0x240 __x64_sys_read+0x72/0xc0 x64_sys_call+0x647/0x27e0 do_syscall_64+0xe5/0x610 entry_SYSCALL_64_after_hwframe+0x76/0x7e Only check sk_protocol on full socks. tcp_abort() already knows how to deal with TIME_WAIT and NEW_SYN_RECV socks. Also fix the comment, it never matched the code.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/01b245ba016d44861690594e10f67e026ce8552f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2534a5e5d360c2b10203cfa80f4ab9d021e48f2f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5b4eb82475ae17d55974235c09e97044829426a8
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/91a482a81eabddebf5430cbbdf12027e1a91b767
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a9651704c6fd64590b5ad4fbe7c3768accf95993

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/filter.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5b4eb82475ae17d55974235c09e97044829426a8",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            },
            {
              "lessThan": "a9651704c6fd64590b5ad4fbe7c3768accf95993",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            },
            {
              "lessThan": "91a482a81eabddebf5430cbbdf12027e1a91b767",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            },
            {
              "lessThan": "2534a5e5d360c2b10203cfa80f4ab9d021e48f2f",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            },
            {
              "lessThan": "01b245ba016d44861690594e10f67e026ce8552f",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/filter.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc5",
              "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\nbpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()\n\nsk_protocol lives in struct sock, not in struct sock_common. A timewait\nor request sock handed to bpf_sock_destroy() by the tcp iterator is\nneither, so reading sk-\u003esk_protocol runs past the object:\n\n==================================================================\nBUG: KASAN: slab-out-of-bounds in bpf_sock_destroy+0xc7/0xe0\nRead of size 2 at addr ffff8881047d11b4 by task test_progs/428\n\nTainted: [W]=WARN\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x91/0xf0\n print_report+0xd1/0x630\n kasan_report+0xf3/0x130\n __asan_report_load2_noabort+0x14/0x30\n bpf_sock_destroy+0xc7/0xe0\n bpf_prog_c3dd61f9d9cd9f37_iter_tcp6_timewait+0x9f/0xb7\n bpf_iter_run_prog+0x538/0xde0\n bpf_iter_tcp_seq_show+0x26b/0x4b0\n bpf_seq_read+0x424/0x1210\n vfs_read+0x197/0xe40\n ksys_read+0x119/0x240\n __x64_sys_read+0x72/0xc0\n x64_sys_call+0x647/0x27e0\n do_syscall_64+0xe5/0x610\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nOnly check sk_protocol on full socks. tcp_abort() already knows how to\ndeal with TIME_WAIT and NEW_SYN_RECV socks. Also fix the comment, it\nnever matched the code."
    }
  ],
  "id": "CVE-2026-98384",
  "lastModified": "2026-10-09T08:16:56.940",
  "metrics": {},
  "published": "2026-10-09T08:16:56.940",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/01b245ba016d44861690594e10f67e026ce8552f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2534a5e5d360c2b10203cfa80f4ab9d021e48f2f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5b4eb82475ae17d55974235c09e97044829426a8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/91a482a81eabddebf5430cbbdf12027e1a91b767"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a9651704c6fd64590b5ad4fbe7c3768accf95993"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-98384 (GCVE-0-2026-98384)

Vulnerability from cvelistv5 – Published: 2026-10-09 07:34 – Updated: 2026-10-09 07:34

Title

bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()

Summary

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6633 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/5b4eb82475ae17d55…
https://git.kernel.org/stable/c/a9651704c6fd64590…
https://git.kernel.org/stable/c/91a482a81eabddebf…
https://git.kernel.org/stable/c/2534a5e5d360c2b10…
https://git.kernel.org/stable/c/01b245ba016d44861…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4ddbcb886268af8d12a23e6640b39d1d9c652b1b , < 5b4eb82475ae17d55974235c09e97044829426a8 (git) Affected: 4ddbcb886268af8d12a23e6640b39d1d9c652b1b , < a9651704c6fd64590b5ad4fbe7c3768accf95993 (git) Affected: 4ddbcb886268af8d12a23e6640b39d1d9c652b1b , < 91a482a81eabddebf5430cbbdf12027e1a91b767 (git) Affected: 4ddbcb886268af8d12a23e6640b39d1d9c652b1b , < 2534a5e5d360c2b10203cfa80f4ab9d021e48f2f (git) Affected: 4ddbcb886268af8d12a23e6640b39d1d9c652b1b , < 01b245ba016d44861690594e10f67e026ce8552f (git)
Linux	Linux	Affected: 6.5 Unaffected: 0 , < 6.5 (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.55 , ≤ 6.18.* (semver) Unaffected: 7.2.9 , ≤ 7.2.* (semver) Unaffected: 7.3-rc5 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/filter.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5b4eb82475ae17d55974235c09e97044829426a8",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            },
            {
              "lessThan": "a9651704c6fd64590b5ad4fbe7c3768accf95993",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            },
            {
              "lessThan": "91a482a81eabddebf5430cbbdf12027e1a91b767",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            },
            {
              "lessThan": "2534a5e5d360c2b10203cfa80f4ab9d021e48f2f",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            },
            {
              "lessThan": "01b245ba016d44861690594e10f67e026ce8552f",
              "status": "affected",
              "version": "4ddbcb886268af8d12a23e6640b39d1d9c652b1b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/filter.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.55",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc5",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()\n\nsk_protocol lives in struct sock, not in struct sock_common. A timewait\nor request sock handed to bpf_sock_destroy() by the tcp iterator is\nneither, so reading sk-\u003esk_protocol runs past the object:\n\n==================================================================\nBUG: KASAN: slab-out-of-bounds in bpf_sock_destroy+0xc7/0xe0\nRead of size 2 at addr ffff8881047d11b4 by task test_progs/428\n\nTainted: [W]=WARN\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x91/0xf0\n print_report+0xd1/0x630\n kasan_report+0xf3/0x130\n __asan_report_load2_noabort+0x14/0x30\n bpf_sock_destroy+0xc7/0xe0\n bpf_prog_c3dd61f9d9cd9f37_iter_tcp6_timewait+0x9f/0xb7\n bpf_iter_run_prog+0x538/0xde0\n bpf_iter_tcp_seq_show+0x26b/0x4b0\n bpf_seq_read+0x424/0x1210\n vfs_read+0x197/0xe40\n ksys_read+0x119/0x240\n __x64_sys_read+0x72/0xc0\n x64_sys_call+0x647/0x27e0\n do_syscall_64+0xe5/0x610\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nOnly check sk_protocol on full socks. tcp_abort() already knows how to\ndeal with TIME_WAIT and NEW_SYN_RECV socks. Also fix the comment, it\nnever matched the code."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-09T07:34:23.097Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5b4eb82475ae17d55974235c09e97044829426a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9651704c6fd64590b5ad4fbe7c3768accf95993"
        },
        {
          "url": "https://git.kernel.org/stable/c/91a482a81eabddebf5430cbbdf12027e1a91b767"
        },
        {
          "url": "https://git.kernel.org/stable/c/2534a5e5d360c2b10203cfa80f4ab9d021e48f2f"
        },
        {
          "url": "https://git.kernel.org/stable/c/01b245ba016d44861690594e10f67e026ce8552f"
        }
      ],
      "title": "bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98384",
    "datePublished": "2026-10-09T07:34:23.097Z",
    "dateReserved": "2026-09-25T10:25:14.345Z",
    "dateUpdated": "2026-10-09T07:34:23.097Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

FKIE_CVE-2026-98384

CVE-2026-98384 (GCVE-0-2026-98384)

Tags

Sightings

Nomenclature

Related by attack behaviour