github - ghsa-m4xx-f75v-xfq3

ghsa-m4xx-f75v-xfq3

Vulnerability from github

Published

2024-11-05 18:32

Modified

2024-11-13 03:30

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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

sfc: Don't invoke xdp_do_flush() from netpoll.

Yury reported a crash in the sfc driver originated from netpoll_send_udp(). The netconsole sends a message and then netpoll invokes the driver's NAPI function with a budget of zero. It is dedicated to allow driver to free TX resources, that it may have used while sending the packet.

In the netpoll case the driver invokes xdp_do_flush() unconditionally, leading to crash because bpf_net_context was never assigned.

Invoke xdp_do_flush() only if budget is not zero.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-50094"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-05T17:15:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: Don\u0027t invoke xdp_do_flush() from netpoll.\n\nYury reported a crash in the sfc driver originated from\nnetpoll_send_udp(). The netconsole sends a message and then netpoll\ninvokes the driver\u0027s NAPI function with a budget of zero. It is\ndedicated to allow driver to free TX resources, that it may have used\nwhile sending the packet.\n\nIn the netpoll case the driver invokes xdp_do_flush() unconditionally,\nleading to crash because bpf_net_context was never assigned.\n\nInvoke xdp_do_flush() only if budget is not zero.",
  "id": "GHSA-m4xx-f75v-xfq3",
  "modified": "2024-11-13T03:30:45Z",
  "published": "2024-11-05T18:32:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50094"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793"
    }
  ],
  "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-2024-50094

Vulnerability from cvelistv5

Published

2024-11-05 17:04

Modified

2024-12-19 09:32

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: sfc: Don't invoke xdp_do_flush() from netpoll. Yury reported a crash in the sfc driver originated from netpoll_send_udp(). The netconsole sends a message and then netpoll invokes the driver's NAPI function with a budget of zero. It is dedicated to allow driver to free TX resources, that it may have used while sending the packet. In the netpoll case the driver invokes xdp_do_flush() unconditionally, leading to crash because bpf_net_context was never assigned. Invoke xdp_do_flush() only if budget is not zero.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793
	https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c

Impacted products

Vendor

Product

Version

▼

Linux

Version: 401cb7dae8130fd34eb84648e02ab4c506df7d5e
Version: 401cb7dae8130fd34eb84648e02ab4c506df7d5e

Linux

Version: 6.11

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/sfc/efx_channels.c",
            "drivers/net/ethernet/sfc/siena/efx_channels.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "65d4fc76d75c136744e67754d20feda609e7b793",
              "status": "affected",
              "version": "401cb7dae8130fd34eb84648e02ab4c506df7d5e",
              "versionType": "git"
            },
            {
              "lessThan": "55e802468e1d38dec8e25a2fdb6078d45b647e8c",
              "status": "affected",
              "version": "401cb7dae8130fd34eb84648e02ab4c506df7d5e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/sfc/efx_channels.c",
            "drivers/net/ethernet/sfc/siena/efx_channels.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: Don\u0027t invoke xdp_do_flush() from netpoll.\n\nYury reported a crash in the sfc driver originated from\nnetpoll_send_udp(). The netconsole sends a message and then netpoll\ninvokes the driver\u0027s NAPI function with a budget of zero. It is\ndedicated to allow driver to free TX resources, that it may have used\nwhile sending the packet.\n\nIn the netpoll case the driver invokes xdp_do_flush() unconditionally,\nleading to crash because bpf_net_context was never assigned.\n\nInvoke xdp_do_flush() only if budget is not zero."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:32:58.135Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793"
        },
        {
          "url": "https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c"
        }
      ],
      "title": "sfc: Don\u0027t invoke xdp_do_flush() from netpoll.",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50094",
    "datePublished": "2024-11-05T17:04:57.299Z",
    "dateReserved": "2024-10-21T19:36:19.943Z",
    "dateUpdated": "2024-12-19T09:32:58.135Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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