Vulnerability-Lookup

CVE-2026-98382 (GCVE-0-2026-98382)

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

Title

bpf: Reject dev-bound-only programs on other devices

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject dev-bound-only programs on other devices __bpf_offload_dev_match() falls back to comparing offdev pointers after an exact netdev mismatch. Bound-only programs normally have NULL offdevs, so unrelated netdevs compare equal. A bound-only program on an offload-registered netdev can instead inherit a real offdev and match a sibling port. With CAP_BPF and CAP_NET_ADMIN, a caller can use bpf(BPF_LINK_CREATE) with a different target ifindex to run metadata kfuncs specialized for the bound driver on the target driver's xdp_buff. Running a veth-bound program on tun reads beyond tun's bare stack xdp_buff as a veth_xdp_buff. Oops: general protection fault, probably for non-canonical address KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] RIP: 0010:veth_xdp_rx_timestamp (drivers/net/veth.c:1673) Call Trace: ... tun_build_skb (drivers/net/tun.c:1739) tun_get_user (drivers/net/tun.c:1856) tun_chr_write_iter (drivers/net/tun.c:2091) vfs_write (fs/read_write.c:595 fs/read_write.c:687) ksys_write (fs/read_write.c:739) do_syscall_64 (arch/x86/entry/syscall_64.c:84) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Kernel panic - not syncing: Fatal exception in interrupt Restrict non-offloaded programs to exact netdev matches and retain the shared-offdev fallback only for genuinely offloaded multi-port programs.

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/e57f0419436157449…
https://git.kernel.org/stable/c/0dceda331180617ae…
https://git.kernel.org/stable/c/940b626854de200e6…
https://git.kernel.org/stable/c/bb375f3c5990e2985…
https://git.kernel.org/stable/c/6db1ce73e9853f533…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < e57f04194361574493e3e6cf0b9e9c69e4ae9791 (git) Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < 0dceda331180617aeeb22381e8480b37f18ba08b (git) Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < 940b626854de200e6187777d42114727daca617c (git) Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < bb375f3c5990e29851894f20ebc4b9dbc6676126 (git) Affected: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 , < 6db1ce73e9853f533eb7f413f14ba00f8ec6f80d (git)	guessed
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (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)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/offload.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e57f04194361574493e3e6cf0b9e9c69e4ae9791",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "0dceda331180617aeeb22381e8480b37f18ba08b",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "940b626854de200e6187777d42114727daca617c",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "bb375f3c5990e29851894f20ebc4b9dbc6676126",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "6db1ce73e9853f533eb7f413f14ba00f8ec6f80d",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/offload.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "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": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.55",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc5",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject dev-bound-only programs on other devices\n\n__bpf_offload_dev_match() falls back to comparing offdev pointers after an\nexact netdev mismatch. Bound-only programs normally have NULL offdevs, so\nunrelated netdevs compare equal. A bound-only program on an\noffload-registered netdev can instead inherit a real offdev and match a\nsibling port. With CAP_BPF and CAP_NET_ADMIN, a caller can use\nbpf(BPF_LINK_CREATE) with a different target ifindex to run metadata kfuncs\nspecialized for the bound driver on the target driver\u0027s xdp_buff. Running a\nveth-bound program on tun reads beyond tun\u0027s bare stack xdp_buff as a\nveth_xdp_buff.\n\n  Oops: general protection fault, probably for non-canonical address\n  KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n  RIP: 0010:veth_xdp_rx_timestamp (drivers/net/veth.c:1673)\n  Call Trace:\n   ...\n   tun_build_skb (drivers/net/tun.c:1739)\n   tun_get_user (drivers/net/tun.c:1856)\n   tun_chr_write_iter (drivers/net/tun.c:2091)\n   vfs_write (fs/read_write.c:595 fs/read_write.c:687)\n   ksys_write (fs/read_write.c:739)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:84)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n  Kernel panic - not syncing: Fatal exception in interrupt\n\nRestrict non-offloaded programs to exact netdev matches and retain the\nshared-offdev fallback only for genuinely offloaded multi-port programs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-09T07:34:21.718Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e57f04194361574493e3e6cf0b9e9c69e4ae9791"
        },
        {
          "url": "https://git.kernel.org/stable/c/0dceda331180617aeeb22381e8480b37f18ba08b"
        },
        {
          "url": "https://git.kernel.org/stable/c/940b626854de200e6187777d42114727daca617c"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb375f3c5990e29851894f20ebc4b9dbc6676126"
        },
        {
          "url": "https://git.kernel.org/stable/c/6db1ce73e9853f533eb7f413f14ba00f8ec6f80d"
        }
      ],
      "title": "bpf: Reject dev-bound-only programs on other devices",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98382",
    "datePublished": "2026-10-09T07:34:21.718Z",
    "dateReserved": "2026-09-25T10:25:14.345Z",
    "dateUpdated": "2026-10-09T07:34:21.718Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "kernel/bpf/offload.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "e57f04194361574493e3e6cf0b9e9c69e4ae9791",
                    "status": "affected",
                    "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0dceda331180617aeeb22381e8480b37f18ba08b",
                    "status": "affected",
                    "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "940b626854de200e6187777d42114727daca617c",
                    "status": "affected",
                    "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "bb375f3c5990e29851894f20ebc4b9dbc6676126",
                    "status": "affected",
                    "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6db1ce73e9853f533eb7f413f14ba00f8ec6f80d",
                    "status": "affected",
                    "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "kernel/bpf/offload.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.3"
                  },
                  {
                    "lessThan": "6.3",
                    "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: Reject dev-bound-only programs on other devices\n\n__bpf_offload_dev_match() falls back to comparing offdev pointers after an\nexact netdev mismatch. Bound-only programs normally have NULL offdevs, so\nunrelated netdevs compare equal. A bound-only program on an\noffload-registered netdev can instead inherit a real offdev and match a\nsibling port. With CAP_BPF and CAP_NET_ADMIN, a caller can use\nbpf(BPF_LINK_CREATE) with a different target ifindex to run metadata kfuncs\nspecialized for the bound driver on the target driver\u0027s xdp_buff. Running a\nveth-bound program on tun reads beyond tun\u0027s bare stack xdp_buff as a\nveth_xdp_buff.\n\n  Oops: general protection fault, probably for non-canonical address\n  KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n  RIP: 0010:veth_xdp_rx_timestamp (drivers/net/veth.c:1673)\n  Call Trace:\n   ...\n   tun_build_skb (drivers/net/tun.c:1739)\n   tun_get_user (drivers/net/tun.c:1856)\n   tun_chr_write_iter (drivers/net/tun.c:2091)\n   vfs_write (fs/read_write.c:595 fs/read_write.c:687)\n   ksys_write (fs/read_write.c:739)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:84)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n  Kernel panic - not syncing: Fatal exception in interrupt\n\nRestrict non-offloaded programs to exact netdev matches and retain the\nshared-offdev fallback only for genuinely offloaded multi-port programs."
          }
        ],
        "id": "CVE-2026-98382",
        "lastModified": "2026-10-09T08:16:56.680",
        "metrics": {},
        "published": "2026-10-09T08:16:56.680",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0dceda331180617aeeb22381e8480b37f18ba08b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6db1ce73e9853f533eb7f413f14ba00f8ec6f80d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/940b626854de200e6187777d42114727daca617c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/bb375f3c5990e29851894f20ebc4b9dbc6676126"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e57f04194361574493e3e6cf0b9e9c69e4ae9791"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}

FKIE_CVE-2026-98382

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

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0dceda331180617aeeb22381e8480b37f18ba08b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6db1ce73e9853f533eb7f413f14ba00f8ec6f80d
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/940b626854de200e6187777d42114727daca617c
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bb375f3c5990e29851894f20ebc4b9dbc6676126
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e57f04194361574493e3e6cf0b9e9c69e4ae9791

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/offload.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e57f04194361574493e3e6cf0b9e9c69e4ae9791",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "0dceda331180617aeeb22381e8480b37f18ba08b",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "940b626854de200e6187777d42114727daca617c",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "bb375f3c5990e29851894f20ebc4b9dbc6676126",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "6db1ce73e9853f533eb7f413f14ba00f8ec6f80d",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/offload.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "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: Reject dev-bound-only programs on other devices\n\n__bpf_offload_dev_match() falls back to comparing offdev pointers after an\nexact netdev mismatch. Bound-only programs normally have NULL offdevs, so\nunrelated netdevs compare equal. A bound-only program on an\noffload-registered netdev can instead inherit a real offdev and match a\nsibling port. With CAP_BPF and CAP_NET_ADMIN, a caller can use\nbpf(BPF_LINK_CREATE) with a different target ifindex to run metadata kfuncs\nspecialized for the bound driver on the target driver\u0027s xdp_buff. Running a\nveth-bound program on tun reads beyond tun\u0027s bare stack xdp_buff as a\nveth_xdp_buff.\n\n  Oops: general protection fault, probably for non-canonical address\n  KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n  RIP: 0010:veth_xdp_rx_timestamp (drivers/net/veth.c:1673)\n  Call Trace:\n   ...\n   tun_build_skb (drivers/net/tun.c:1739)\n   tun_get_user (drivers/net/tun.c:1856)\n   tun_chr_write_iter (drivers/net/tun.c:2091)\n   vfs_write (fs/read_write.c:595 fs/read_write.c:687)\n   ksys_write (fs/read_write.c:739)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:84)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n  Kernel panic - not syncing: Fatal exception in interrupt\n\nRestrict non-offloaded programs to exact netdev matches and retain the\nshared-offdev fallback only for genuinely offloaded multi-port programs."
    }
  ],
  "id": "CVE-2026-98382",
  "lastModified": "2026-10-09T08:16:56.680",
  "metrics": {},
  "published": "2026-10-09T08:16:56.680",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0dceda331180617aeeb22381e8480b37f18ba08b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6db1ce73e9853f533eb7f413f14ba00f8ec6f80d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/940b626854de200e6187777d42114727daca617c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bb375f3c5990e29851894f20ebc4b9dbc6676126"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e57f04194361574493e3e6cf0b9e9c69e4ae9791"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-VW7W-8MP5-CR53

Vulnerability from github – Published: 2026-10-09 09:31 – Updated: 2026-10-09 09:31

Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Reject dev-bound-only programs on other devices

__bpf_offload_dev_match() falls back to comparing offdev pointers after an exact netdev mismatch. Bound-only programs normally have NULL offdevs, so unrelated netdevs compare equal. A bound-only program on an offload-registered netdev can instead inherit a real offdev and match a sibling port. With CAP_BPF and CAP_NET_ADMIN, a caller can use bpf(BPF_LINK_CREATE) with a different target ifindex to run metadata kfuncs specialized for the bound driver on the target driver's xdp_buff. Running a veth-bound program on tun reads beyond tun's bare stack xdp_buff as a veth_xdp_buff.

Oops: general protection fault, probably for non-canonical address KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] RIP: 0010:veth_xdp_rx_timestamp (drivers/net/veth.c:1673) Call Trace: ... tun_build_skb (drivers/net/tun.c:1739) tun_get_user (drivers/net/tun.c:1856) tun_chr_write_iter (drivers/net/tun.c:2091) vfs_write (fs/read_write.c:595 fs/read_write.c:687) ksys_write (fs/read_write.c:739) do_syscall_64 (arch/x86/entry/syscall_64.c:84) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Kernel panic - not syncing: Fatal exception in interrupt

Restrict non-offloaded programs to exact netdev matches and retain the shared-offdev fallback only for genuinely offloaded multi-port programs.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98382"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-09T08:16:56Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject dev-bound-only programs on other devices\n\n__bpf_offload_dev_match() falls back to comparing offdev pointers after an\nexact netdev mismatch. Bound-only programs normally have NULL offdevs, so\nunrelated netdevs compare equal. A bound-only program on an\noffload-registered netdev can instead inherit a real offdev and match a\nsibling port. With CAP_BPF and CAP_NET_ADMIN, a caller can use\nbpf(BPF_LINK_CREATE) with a different target ifindex to run metadata kfuncs\nspecialized for the bound driver on the target driver\u0027s xdp_buff. Running a\nveth-bound program on tun reads beyond tun\u0027s bare stack xdp_buff as a\nveth_xdp_buff.\n\n  Oops: general protection fault, probably for non-canonical address\n  KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n  RIP: 0010:veth_xdp_rx_timestamp (drivers/net/veth.c:1673)\n  Call Trace:\n   ...\n   tun_build_skb (drivers/net/tun.c:1739)\n   tun_get_user (drivers/net/tun.c:1856)\n   tun_chr_write_iter (drivers/net/tun.c:2091)\n   vfs_write (fs/read_write.c:595 fs/read_write.c:687)\n   ksys_write (fs/read_write.c:739)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:84)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n  Kernel panic - not syncing: Fatal exception in interrupt\n\nRestrict non-offloaded programs to exact netdev matches and retain the\nshared-offdev fallback only for genuinely offloaded multi-port programs.",
  "id": "GHSA-vw7w-8mp5-cr53",
  "modified": "2026-10-09T09:31:05Z",
  "published": "2026-10-09T09:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98382"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0dceda331180617aeeb22381e8480b37f18ba08b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6db1ce73e9853f533eb7f413f14ba00f8ec6f80d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/940b626854de200e6187777d42114727daca617c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb375f3c5990e29851894f20ebc4b9dbc6676126"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e57f04194361574493e3e6cf0b9e9c69e4ae9791"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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Action not permitted

CVE-2026-98382 (GCVE-0-2026-98382)

FKIE_CVE-2026-98382

GHSA-VW7W-8MP5-CR53

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