Vulnerability-Lookup

GHSA-H72J-469C-C787

Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2024-10-31 15:30

Details

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

vrf: revert "vrf: Remove unnecessary RCU-bh critical section"

This reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.

dev_queue_xmit_nit is expected to be called with BH disabled. __dev_queue_xmit has the following:

    /* Disable soft irqs for various locks below. Also
     * stops preemption for RCU.
     */
    rcu_read_lock_bh();

VRF must follow this invariant. The referenced commit removed this protection. Which triggered a lockdep warning:

================================
WARNING: inconsistent lock state
6.11.0 #1 Tainted: G        W
--------------------------------
inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
btserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes:
ffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30
{IN-SOFTIRQ-W} state was registered at:
  lock_acquire+0x19a/0x4f0
  _raw_spin_lock+0x27/0x40
  packet_rcv+0xa33/0x1320
  __netif_receive_skb_core.constprop.0+0xcb0/0x3a90
  __netif_receive_skb_list_core+0x2c9/0x890
  netif_receive_skb_list_internal+0x610/0xcc0
      [...]

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(rlock-AF_PACKET);
  <Interrupt>
    lock(rlock-AF_PACKET);

 *** DEADLOCK ***

Call Trace:
 <TASK>
 dump_stack_lvl+0x73/0xa0
 mark_lock+0x102e/0x16b0
 __lock_acquire+0x9ae/0x6170
 lock_acquire+0x19a/0x4f0
 _raw_spin_lock+0x27/0x40
 tpacket_rcv+0x863/0x3b30
 dev_queue_xmit_nit+0x709/0xa40
 vrf_finish_direct+0x26e/0x340 [vrf]
 vrf_l3_out+0x5f4/0xe80 [vrf]
 __ip_local_out+0x51e/0x7a0
      [...]

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-49980"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:18Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvrf: revert \"vrf: Remove unnecessary RCU-bh critical section\"\n\nThis reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.\n\ndev_queue_xmit_nit is expected to be called with BH disabled.\n__dev_queue_xmit has the following:\n\n        /* Disable soft irqs for various locks below. Also\n         * stops preemption for RCU.\n         */\n        rcu_read_lock_bh();\n\nVRF must follow this invariant. The referenced commit removed this\nprotection. Which triggered a lockdep warning:\n\n\t================================\n\tWARNING: inconsistent lock state\n\t6.11.0 #1 Tainted: G        W\n\t--------------------------------\n\tinconsistent {IN-SOFTIRQ-W} -\u003e {SOFTIRQ-ON-W} usage.\n\tbtserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes:\n\tffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30\n\t{IN-SOFTIRQ-W} state was registered at:\n\t  lock_acquire+0x19a/0x4f0\n\t  _raw_spin_lock+0x27/0x40\n\t  packet_rcv+0xa33/0x1320\n\t  __netif_receive_skb_core.constprop.0+0xcb0/0x3a90\n\t  __netif_receive_skb_list_core+0x2c9/0x890\n\t  netif_receive_skb_list_internal+0x610/0xcc0\n          [...]\n\n\tother info that might help us debug this:\n\t Possible unsafe locking scenario:\n\n\t       CPU0\n\t       ----\n\t  lock(rlock-AF_PACKET);\n\t  \u003cInterrupt\u003e\n\t    lock(rlock-AF_PACKET);\n\n\t *** DEADLOCK ***\n\n\tCall Trace:\n\t \u003cTASK\u003e\n\t dump_stack_lvl+0x73/0xa0\n\t mark_lock+0x102e/0x16b0\n\t __lock_acquire+0x9ae/0x6170\n\t lock_acquire+0x19a/0x4f0\n\t _raw_spin_lock+0x27/0x40\n\t tpacket_rcv+0x863/0x3b30\n\t dev_queue_xmit_nit+0x709/0xa40\n\t vrf_finish_direct+0x26e/0x340 [vrf]\n\t vrf_l3_out+0x5f4/0xe80 [vrf]\n\t __ip_local_out+0x51e/0x7a0\n          [...]",
  "id": "GHSA-h72j-469c-c787",
  "modified": "2024-10-31T15:30:58Z",
  "published": "2024-10-21T18:30:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49980"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/718a752bd746b3f4dd62516bb437baf73d548415"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c9381b3138246d46536db93ed696832abd70204"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b04c4d9eb4f25b950b33218e33b04c94e7445e51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e61f8c4d179b2ffc0d3b7f821c3734be738643d0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-49980 (GCVE-0-2024-49980)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2026-05-11 20:43

Title

vrf: revert "vrf: Remove unnecessary RCU-bh critical section"

Summary

In the Linux kernel, the following vulnerability has been resolved: vrf: revert "vrf: Remove unnecessary RCU-bh critical section" This reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853. dev_queue_xmit_nit is expected to be called with BH disabled. __dev_queue_xmit has the following: /* Disable soft irqs for various locks below. Also * stops preemption for RCU. */ rcu_read_lock_bh(); VRF must follow this invariant. The referenced commit removed this protection. Which triggered a lockdep warning: ================================ WARNING: inconsistent lock state 6.11.0 #1 Tainted: G W -------------------------------- inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. btserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes: ffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30 {IN-SOFTIRQ-W} state was registered at: lock_acquire+0x19a/0x4f0 _raw_spin_lock+0x27/0x40 packet_rcv+0xa33/0x1320 __netif_receive_skb_core.constprop.0+0xcb0/0x3a90 __netif_receive_skb_list_core+0x2c9/0x890 netif_receive_skb_list_internal+0x610/0xcc0 [...] other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(rlock-AF_PACKET); <Interrupt> lock(rlock-AF_PACKET); *** DEADLOCK *** Call Trace: <TASK> dump_stack_lvl+0x73/0xa0 mark_lock+0x102e/0x16b0 __lock_acquire+0x9ae/0x6170 lock_acquire+0x19a/0x4f0 _raw_spin_lock+0x27/0x40 tpacket_rcv+0x863/0x3b30 dev_queue_xmit_nit+0x709/0xa40 vrf_finish_direct+0x26e/0x340 [vrf] vrf_l3_out+0x5f4/0xe80 [vrf] __ip_local_out+0x51e/0x7a0 [...]

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-22 13:32 UTC

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/718a752bd746b3f4d…
https://git.kernel.org/stable/c/8c9381b3138246d46…
https://git.kernel.org/stable/c/e61f8c4d179b2ffc0…
https://git.kernel.org/stable/c/b04c4d9eb4f25b950…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 504fc6f4f7f681d2a03aa5f68aad549d90eab853 , < 718a752bd746b3f4dd62516bb437baf73d548415 (git) Affected: 504fc6f4f7f681d2a03aa5f68aad549d90eab853 , < 8c9381b3138246d46536db93ed696832abd70204 (git) Affected: 504fc6f4f7f681d2a03aa5f68aad549d90eab853 , < e61f8c4d179b2ffc0d3b7f821c3734be738643d0 (git) Affected: 504fc6f4f7f681d2a03aa5f68aad549d90eab853 , < b04c4d9eb4f25b950b33218e33b04c94e7445e51 (git)
Linux	Linux	Affected: 6.6 Unaffected: 0 , < 6.6 (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49980",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:32:37.764586Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:38:44.524Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/vrf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "504fc6f4f7f681d2a03aa5f68aad549d90eab853",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
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            {
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              "status": "affected",
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              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.55",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
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                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvrf: revert \"vrf: Remove unnecessary RCU-bh critical section\"\n\nThis reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.\n\ndev_queue_xmit_nit is expected to be called with BH disabled.\n__dev_queue_xmit has the following:\n\n        /* Disable soft irqs for various locks below. Also\n         * stops preemption for RCU.\n         */\n        rcu_read_lock_bh();\n\nVRF must follow this invariant. The referenced commit removed this\nprotection. Which triggered a lockdep warning:\n\n\t================================\n\tWARNING: inconsistent lock state\n\t6.11.0 #1 Tainted: G        W\n\t--------------------------------\n\tinconsistent {IN-SOFTIRQ-W} -\u003e {SOFTIRQ-ON-W} usage.\n\tbtserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes:\n\tffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30\n\t{IN-SOFTIRQ-W} state was registered at:\n\t  lock_acquire+0x19a/0x4f0\n\t  _raw_spin_lock+0x27/0x40\n\t  packet_rcv+0xa33/0x1320\n\t  __netif_receive_skb_core.constprop.0+0xcb0/0x3a90\n\t  __netif_receive_skb_list_core+0x2c9/0x890\n\t  netif_receive_skb_list_internal+0x610/0xcc0\n          [...]\n\n\tother info that might help us debug this:\n\t Possible unsafe locking scenario:\n\n\t       CPU0\n\t       ----\n\t  lock(rlock-AF_PACKET);\n\t  \u003cInterrupt\u003e\n\t    lock(rlock-AF_PACKET);\n\n\t *** DEADLOCK ***\n\n\tCall Trace:\n\t \u003cTASK\u003e\n\t dump_stack_lvl+0x73/0xa0\n\t mark_lock+0x102e/0x16b0\n\t __lock_acquire+0x9ae/0x6170\n\t lock_acquire+0x19a/0x4f0\n\t _raw_spin_lock+0x27/0x40\n\t tpacket_rcv+0x863/0x3b30\n\t dev_queue_xmit_nit+0x709/0xa40\n\t vrf_finish_direct+0x26e/0x340 [vrf]\n\t vrf_l3_out+0x5f4/0xe80 [vrf]\n\t __ip_local_out+0x51e/0x7a0\n          [...]"
        }
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      "providerMetadata": {
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        {
          "url": "https://git.kernel.org/stable/c/b04c4d9eb4f25b950b33218e33b04c94e7445e51"
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      "title": "vrf: revert \"vrf: Remove unnecessary RCU-bh critical section\"",
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    "datePublished": "2024-10-21T18:02:26.494Z",
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}

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.

Detection rules are retrieved from Rulezet.

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.
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