fkie_cve-2024-40931
Vulnerability from fkie_nvd
Published
2024-07-12 13:15
Modified
2025-03-06 12:55
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure snd_una is properly initialized on connect This is strictly related to commit fb7a0d334894 ("mptcp: ensure snd_nxt is properly initialized on connect"). It turns out that syzkaller can trigger the retransmit after fallback and before processing any other incoming packet - so that snd_una is still left uninitialized. Address the issue explicitly initializing snd_una together with snd_nxt and write_seq.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6ddePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7cePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6ddePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7cePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57fPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.10
linux linux_kernel 6.10
linux linux_kernel 6.10


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: ensure snd_una is properly initialized on connect\n\nThis is strictly related to commit fb7a0d334894 (\"mptcp: ensure snd_nxt\nis properly initialized on connect\"). It turns out that syzkaller can\ntrigger the retransmit after fallback and before processing any other\nincoming packet - so that snd_una is still left uninitialized.\n\nAddress the issue explicitly initializing snd_una together with snd_nxt\nand write_seq."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: aseg\u00farese de que snd_una se inicialice correctamente al conectarse. Esto est\u00e1 estrictamente relacionado con el commit fb7a0d334894 (\"mptcp: aseg\u00farese de que snd_nxt se inicialice correctamente al conectarse\"). Resulta que syzkaller puede activar la retransmisi\u00f3n despu\u00e9s del respaldo y antes de procesar cualquier otro paquete entrante, de modo que snd_una a\u00fan permanece sin inicializar. Solucione el problema al inicializar expl\u00edcitamente snd_una junto con snd_nxt y write_seq."
    }
  ],
  "id": "CVE-2024-40931",
  "lastModified": "2025-03-06T12:55:45.233",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-07-12T13:15:15.750",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-908"
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      "source": "nvd@nist.gov",
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}


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