fkie_cve-2024-56643
Vulnerability from fkie_nvd
Published
2024-12-27 15:15
Modified
2025-04-17 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
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
In the Linux kernel, the following vulnerability has been resolved: dccp: Fix memory leak in dccp_feat_change_recv If dccp_feat_push_confirm() fails after new value for SP feature was accepted without reconciliation ('entry == NULL' branch), memory allocated for that value with dccp_feat_clone_sp_val() is never freed. Here is the kmemleak stack for this: unreferenced object 0xffff88801d4ab488 (size 8): comm "syz-executor310", pid 1127, jiffies 4295085598 (age 41.666s) hex dump (first 8 bytes): 01 b4 4a 1d 80 88 ff ff ..J..... backtrace: [<00000000db7cabfe>] kmemdup+0x23/0x50 mm/util.c:128 [<0000000019b38405>] kmemdup include/linux/string.h:465 [inline] [<0000000019b38405>] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline] [<0000000019b38405>] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline] [<0000000019b38405>] dccp_feat_change_recv net/dccp/feat.c:1145 [inline] [<0000000019b38405>] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416 [<00000000b1f6d94a>] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125 [<0000000030d7b621>] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650 [<000000001f74c72e>] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688 [<00000000a6c24128>] sk_backlog_rcv include/net/sock.h:1041 [inline] [<00000000a6c24128>] __release_sock+0x139/0x3b0 net/core/sock.c:2570 [<00000000cf1f3a53>] release_sock+0x54/0x1b0 net/core/sock.c:3111 [<000000008422fa23>] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline] [<000000008422fa23>] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696 [<0000000015b6f64d>] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735 [<0000000010122488>] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865 [<00000000b4b70023>] __sys_connect+0x165/0x1a0 net/socket.c:1882 [<00000000f4cb3815>] __do_sys_connect net/socket.c:1892 [inline] [<00000000f4cb3815>] __se_sys_connect net/socket.c:1889 [inline] [<00000000f4cb3815>] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889 [<00000000e7b1e839>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000055e91434>] entry_SYSCALL_64_after_hwframe+0x67/0xd1 Clean up the allocated memory in case of dccp_feat_push_confirm() failure and bail out with an error reset code. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22be4727a8f898442066bcac34f8a1ad0bc72e14Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/623be080ab3c13d71570bd32f7202a8efa8e2252Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ff67909ee2ffad911e3122616df41dee23ff4f6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9ee68b0f23706a77f53c832457b9384178b76421Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc3d4423def1a9412a0ae454cb4477089ab79276Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c99507fff94b926fc92279c92d80f229c91cb85dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3ec686a369fae5034303061f003cd3f94ddfd23Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.13


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "1298C84F-E296-4E2D-8B96-829D4E94588D",
                     versionEndExcluding: "5.4.287",
                     versionStartIncluding: "2.6.29",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "B5C644CC-2BD7-4E32-BC54-8DCC7ABE9935",
                     versionEndExcluding: "5.10.231",
                     versionStartIncluding: "5.5",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "419FD073-1517-4FD5-8158-F94BC68A1E89",
                     versionEndExcluding: "5.15.174",
                     versionStartIncluding: "5.11",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "09AC6122-E2A4-40FE-9D33-268A1B2EC265",
                     versionEndExcluding: "6.1.120",
                     versionStartIncluding: "5.16",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "29A976AD-B9AB-4A95-9F08-7669F8847EB9",
                     versionEndExcluding: "6.6.66",
                     versionStartIncluding: "6.2",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "9501D045-7A94-42CA-8B03-821BE94A65B7",
                     versionEndExcluding: "6.12.5",
                     versionStartIncluding: "6.7",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*",
                     matchCriteriaId: "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\ndccp: Fix memory leak in dccp_feat_change_recv\n\nIf dccp_feat_push_confirm() fails after new value for SP feature was accepted\nwithout reconciliation ('entry == NULL' branch), memory allocated for that value\nwith dccp_feat_clone_sp_val() is never freed.\n\nHere is the kmemleak stack for this:\n\nunreferenced object 0xffff88801d4ab488 (size 8):\n  comm \"syz-executor310\", pid 1127, jiffies 4295085598 (age 41.666s)\n  hex dump (first 8 bytes):\n    01 b4 4a 1d 80 88 ff ff                          ..J.....\n  backtrace:\n    [<00000000db7cabfe>] kmemdup+0x23/0x50 mm/util.c:128\n    [<0000000019b38405>] kmemdup include/linux/string.h:465 [inline]\n    [<0000000019b38405>] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline]\n    [<0000000019b38405>] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline]\n    [<0000000019b38405>] dccp_feat_change_recv net/dccp/feat.c:1145 [inline]\n    [<0000000019b38405>] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416\n    [<00000000b1f6d94a>] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125\n    [<0000000030d7b621>] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650\n    [<000000001f74c72e>] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688\n    [<00000000a6c24128>] sk_backlog_rcv include/net/sock.h:1041 [inline]\n    [<00000000a6c24128>] __release_sock+0x139/0x3b0 net/core/sock.c:2570\n    [<00000000cf1f3a53>] release_sock+0x54/0x1b0 net/core/sock.c:3111\n    [<000000008422fa23>] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline]\n    [<000000008422fa23>] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696\n    [<0000000015b6f64d>] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735\n    [<0000000010122488>] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865\n    [<00000000b4b70023>] __sys_connect+0x165/0x1a0 net/socket.c:1882\n    [<00000000f4cb3815>] __do_sys_connect net/socket.c:1892 [inline]\n    [<00000000f4cb3815>] __se_sys_connect net/socket.c:1889 [inline]\n    [<00000000f4cb3815>] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889\n    [<00000000e7b1e839>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46\n    [<0000000055e91434>] entry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nClean up the allocated memory in case of dccp_feat_push_confirm() failure\nand bail out with an error reset code.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dccp: Se corrige la pérdida de memoria en dccp_feat_change_recv Si dccp_feat_push_confirm() falla después de que se aceptó un nuevo valor para la característica SP sin conciliación (rama 'entry == NULL'), la memoria asignada para ese valor con dccp_feat_clone_sp_val() nunca se libera. Aquí está la pila kmemleak para esto: objeto sin referencia 0xffff88801d4ab488 (tamaño 8): comm \"syz-executor310\", pid 1127, jiffies 4295085598 (edad 41.666s) volcado hexadecimal (primeros 8 bytes): 01 b4 4a 1d 80 88 ff ff ..J..... backtrace: [&lt;00000000db7cabfe&gt;] kmemdup+0x23/0x50 mm/util.c:128 [&lt;0000000019b38405&gt;] kmemdup include/linux/string.h:465 [en línea] [&lt;0000000019b38405&gt;] dccp_feat_clone_sp_val net/dccp/feat.c:371 [en línea] [&lt;0000000019b38405&gt;] dccp_feat_clone_sp_val net/dccp/feat.c:367 [en línea] [&lt;0000000019b38405&gt;] dccp_feat_change_recv net/dccp/feat.c:1145 [en línea] [&lt;0000000019b38405&gt;] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416 [&lt;00000000b1f6d94a&gt;] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125 [&lt;0000000030d7b621&gt;] dccp_rcv_state_process+0x197/0x13d0 red/dccp/input.c:650 [&lt;000000001f74c72e&gt;] dccp_v4_do_rcv+0xf9/0x1a0 red/dccp/ipv4.c:688 [&lt;00000000a6c24128&gt;] sk_backlog_rcv incluir/net/sock.h:1041 [en línea] [&lt;00000000a6c24128&gt;] __release_sock+0x139/0x3b0 red/core/sock.c:2570 [&lt;00000000cf1f3a53&gt;] release_sock+0x54/0x1b0 net/core/sock.c:3111 [&lt;000000008422fa23&gt;] espera_de_conexión inet net/ipv4/af_inet.c:603 [en línea] [&lt;000000008422fa23&gt;] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696 [&lt;0000000015b6f64d&gt;] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735 [&lt;0000000010122488&gt;] archivo_de_conexión_sys+0x15c/0x1a0 net/socket.c:1865 [&lt;00000000b4b70023&gt;] __sys_connect+0x165/0x1a0 red/socket.c:1882 [&lt;00000000f4cb3815&gt;] __do_sys_connect red/socket.c:1892 [en línea] [&lt;00000000f4cb3815&gt;] __se_sys_connect red/socket.c:1889 [en línea] [&lt;00000000f4cb3815&gt;] __x64_sys_connect+0x6e/0xb0 red/socket.c:1889 [&lt;00000000e7b1e839&gt;] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [&lt;0000000055e91434&gt;] entry_SYSCALL_64_after_hwframe+0x67/0xd1 Limpia la memoria asignada en caso de que dccp_feat_push_confirm() falle y se resuelve con un código de reinicio de error. Encontrado por Linux Verification Center (linuxtesting.org) con Syzkaller.",
      },
   ],
   id: "CVE-2024-56643",
   lastModified: "2025-04-17T21:15:49.070",
   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",
         },
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "LOW",
               baseScore: 3.3,
               baseSeverity: "LOW",
               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:L",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 1.4,
            source: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            type: "Secondary",
         },
      ],
   },
   published: "2024-12-27T15:15:24.040",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/22be4727a8f898442066bcac34f8a1ad0bc72e14",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/623be080ab3c13d71570bd32f7202a8efa8e2252",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/6ff67909ee2ffad911e3122616df41dee23ff4f6",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/9ee68b0f23706a77f53c832457b9384178b76421",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/bc3d4423def1a9412a0ae454cb4477089ab79276",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/c99507fff94b926fc92279c92d80f229c91cb85d",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/d3ec686a369fae5034303061f003cd3f94ddfd23",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-401",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
      {
         description: [
            {
               lang: "en",
               value: "CWE-401",
            },
         ],
         source: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
         type: "Secondary",
      },
   ],
}


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