fkie_cve-2024-50258
Vulnerability from fkie_nvd
Published
2024-11-09 11:15
Modified
2024-12-14 21:15
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: net: fix crash when config small gso_max_size/gso_ipv4_max_size Config a small gso_max_size/gso_ipv4_max_size will lead to an underflow in sk_dst_gso_max_size(), which may trigger a BUG_ON crash, because sk->sk_gso_max_size would be much bigger than device limits. Call Trace: tcp_write_xmit tso_segs = tcp_init_tso_segs(skb, mss_now); tcp_set_skb_tso_segs tcp_skb_pcount_set // skb->len = 524288, mss_now = 8 // u16 tso_segs = 524288/8 = 65535 -> 0 tso_segs = DIV_ROUND_UP(skb->len, mss_now) BUG_ON(!tso_segs) Add check for the minimum value of gso_max_size and gso_ipv4_max_size.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9ab5cf19fb0e4680f95e506d6c544259bf1111c4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac5977001eee7660c643f8e07a2de9001990b7b8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e72fd1389a5364bc6aa6312ecf30bdb5891b9486Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e9365368b483328639c03fc730448dccd5a25b6b
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.12
linux linux_kernel 6.12
linux linux_kernel 6.12
linux linux_kernel 6.12
linux linux_kernel 6.12


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{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "3963E830-C9E7-4330-AF4D-17893E6C5472",
                     versionEndIncluding: "6.6.60",
                     versionStartIncluding: "4.16",
                     vulnerable: true,
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                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "B29C9329-20A2-46C3-8262-6601FBA189E8",
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                     versionStartIncluding: "6.7",
                     vulnerable: true,
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                     vulnerable: true,
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                     matchCriteriaId: "E0F717D8-3014-4F84-8086-0124B2111379",
                     vulnerable: true,
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                     vulnerable: true,
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               negate: false,
               operator: "OR",
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   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix crash when config small gso_max_size/gso_ipv4_max_size\n\nConfig a small gso_max_size/gso_ipv4_max_size will lead to an underflow\nin sk_dst_gso_max_size(), which may trigger a BUG_ON crash,\nbecause sk->sk_gso_max_size would be much bigger than device limits.\nCall Trace:\ntcp_write_xmit\n    tso_segs = tcp_init_tso_segs(skb, mss_now);\n        tcp_set_skb_tso_segs\n            tcp_skb_pcount_set\n                // skb->len = 524288, mss_now = 8\n                // u16 tso_segs = 524288/8 = 65535 -> 0\n                tso_segs = DIV_ROUND_UP(skb->len, mss_now)\n    BUG_ON(!tso_segs)\nAdd check for the minimum value of gso_max_size and gso_ipv4_max_size.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: se corrige el fallo al configurar un gso_max_size/gso_ipv4_max_size pequeño. Configurar un gso_max_size/gso_ipv4_max_size pequeño provocará un desbordamiento en sk_dst_gso_max_size(), lo que puede desencadenar un fallo BUG_ON, porque sk->sk_gso_max_size sería mucho mayor que los límites del dispositivo. Seguimiento de llamadas: tcp_write_xmit tso_segs = tcp_init_tso_segs(skb, mss_now); tcp_set_skb_tso_segs tcp_skb_pcount_set // skb->len = 524288, mss_now = 8 // u16 tso_segs = 524288/8 = 65535 -> 0 tso_segs = DIV_ROUND_UP(skb->len, mss_now) BUG_ON(!tso_segs) Agregar verificación para el valor mínimo de gso_max_size y gso_ipv4_max_size.",
      },
   ],
   id: "CVE-2024-50258",
   lastModified: "2024-12-14T21:15:34.100",
   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",
         },
      ],
   },
   published: "2024-11-09T11:15:11.413",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/9ab5cf19fb0e4680f95e506d6c544259bf1111c4",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
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         ],
         url: "https://git.kernel.org/stable/c/ac5977001eee7660c643f8e07a2de9001990b7b8",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/e9365368b483328639c03fc730448dccd5a25b6b",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-191",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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