cve-2024-26731
Vulnerability from cvelistv5
Published
2024-04-03 17:00
Modified
2024-12-19 08:46
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready() syzbot reported the following NULL pointer dereference issue [1]: BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] RIP: 0010:0x0 [...] Call Trace: <TASK> sk_psock_verdict_data_ready+0x232/0x340 net/core/skmsg.c:1230 unix_stream_sendmsg+0x9b4/0x1230 net/unix/af_unix.c:2293 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 If sk_psock_verdict_data_ready() and sk_psock_stop_verdict() are called concurrently, psock->saved_data_ready can be NULL, causing the above issue. This patch fixes this issue by calling the appropriate data ready function using the sk_psock_data_ready() helper and protecting it from concurrency with sk->sk_callback_lock.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4588b13abcbd561ec67f5b3c1cb2eff690990a54
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4588b13abcbd561ec67f5b3c1cb2eff690990a54
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949
Impacted products
Vendor Product Version
Linux Linux Version: 6.4
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-26731",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-03T18:10:44.552667Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-06T21:26:34.391Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T00:14:12.980Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4588b13abcbd561ec67f5b3c1cb2eff690990a54"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/skmsg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4588b13abcbd561ec67f5b3c1cb2eff690990a54",
              "status": "affected",
              "version": "dd628fc697ee59b76bd3877c4bd13f07ccc3776f",
              "versionType": "git"
            },
            {
              "lessThan": "9b099ed46dcaf1403c531ff02c3d7400fa37fa26",
              "status": "affected",
              "version": "6df7f764cd3cf5a03a4a47b23be47e57e41fcd85",
              "versionType": "git"
            },
            {
              "lessThan": "d61608a4e394f23e0dca099df9eb8e555453d949",
              "status": "affected",
              "version": "6df7f764cd3cf5a03a4a47b23be47e57e41fcd85",
              "versionType": "git"
            },
            {
              "lessThan": "4cd12c6065dfcdeba10f49949bffcf383b3952d8",
              "status": "affected",
              "version": "6df7f764cd3cf5a03a4a47b23be47e57e41fcd85",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/skmsg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.8",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()\n\nsyzbot reported the following NULL pointer dereference issue [1]:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\n  [...]\n  RIP: 0010:0x0\n  [...]\n  Call Trace:\n   \u003cTASK\u003e\n   sk_psock_verdict_data_ready+0x232/0x340 net/core/skmsg.c:1230\n   unix_stream_sendmsg+0x9b4/0x1230 net/unix/af_unix.c:2293\n   sock_sendmsg_nosec net/socket.c:730 [inline]\n   __sock_sendmsg+0x221/0x270 net/socket.c:745\n   ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n   ___sys_sendmsg net/socket.c:2638 [inline]\n   __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n   do_syscall_64+0xf9/0x240\n   entry_SYSCALL_64_after_hwframe+0x6f/0x77\n\nIf sk_psock_verdict_data_ready() and sk_psock_stop_verdict() are called\nconcurrently, psock-\u003esaved_data_ready can be NULL, causing the above issue.\n\nThis patch fixes this issue by calling the appropriate data ready function\nusing the sk_psock_data_ready() helper and protecting it from concurrency\nwith sk-\u003esk_callback_lock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T08:46:03.323Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4588b13abcbd561ec67f5b3c1cb2eff690990a54"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26"
        },
        {
          "url": "https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8"
        }
      ],
      "title": "bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26731",
    "datePublished": "2024-04-03T17:00:18.823Z",
    "dateReserved": "2024-02-19T14:20:24.164Z",
    "dateUpdated": "2024-12-19T08:46:03.323Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26731\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-03T17:15:50.927\",\"lastModified\":\"2024-11-21T09:02:56.323\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()\\n\\nsyzbot reported the following NULL pointer dereference issue [1]:\\n\\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\\n  [...]\\n  RIP: 0010:0x0\\n  [...]\\n  Call Trace:\\n   \u003cTASK\u003e\\n   sk_psock_verdict_data_ready+0x232/0x340 net/core/skmsg.c:1230\\n   unix_stream_sendmsg+0x9b4/0x1230 net/unix/af_unix.c:2293\\n   sock_sendmsg_nosec net/socket.c:730 [inline]\\n   __sock_sendmsg+0x221/0x270 net/socket.c:745\\n   ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n   ___sys_sendmsg net/socket.c:2638 [inline]\\n   __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n   do_syscall_64+0xf9/0x240\\n   entry_SYSCALL_64_after_hwframe+0x6f/0x77\\n\\nIf sk_psock_verdict_data_ready() and sk_psock_stop_verdict() are called\\nconcurrently, psock-\u003esaved_data_ready can be NULL, causing the above issue.\\n\\nThis patch fixes this issue by calling the appropriate data ready function\\nusing the sk_psock_data_ready() helper and protecting it from concurrency\\nwith sk-\u003esk_callback_lock.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bpf, sockmap: corrigi\u00f3 la desreferencia del puntero NULL en sk_psock_verdict_data_ready() syzbot inform\u00f3 el siguiente problema de desreferencia del puntero NULL [1]: ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000000 [... ] RIP: 0010:0x0 [...] Seguimiento de llamadas:  sk_psock_verdict_data_ready+0x232/0x340 net/core/skmsg.c:1230 unix_stream_sendmsg+0x9b4/0x1230 net/unix/af_unix.c:2293 sock_sendmsg_nosec net/socket. c:730 [en l\u00ednea] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [en l\u00ednea] __sys_sendmsg+0x2b0/0x3a0 net /socket. c:2667 do_syscall_64+0xf9/0x240 Entry_SYSCALL_64_after_hwframe+0x6f/0x77 Si sk_psock_verdict_data_ready() y sk_psock_stop_verdict() se llaman simult\u00e1neamente, psock-\u0026gt;saved_data_ready puede ser NULL, causando el problema anterior. Este parche soluciona este problema llamando a la funci\u00f3n de preparaci\u00f3n de datos adecuada utilizando el asistente sk_psock_data_ready() y protegi\u00e9ndola de la concurrencia con sk-\u0026gt;sk_callback_lock.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4588b13abcbd561ec67f5b3c1cb2eff690990a54\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4588b13abcbd561ec67f5b3c1cb2eff690990a54\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.