cve-2024-46858
Vulnerability from cvelistv5
Published
2024-09-27 12:42
Modified
2024-12-19 09:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: Fix uaf in __timer_delete_sync There are two paths to access mptcp_pm_del_add_timer, result in a race condition: CPU1 CPU2 ==== ==== net_rx_action napi_poll netlink_sendmsg __napi_poll netlink_unicast process_backlog netlink_unicast_kernel __netif_receive_skb genl_rcv __netif_receive_skb_one_core netlink_rcv_skb NF_HOOK genl_rcv_msg ip_local_deliver_finish genl_family_rcv_msg ip_protocol_deliver_rcu genl_family_rcv_msg_doit tcp_v4_rcv mptcp_pm_nl_flush_addrs_doit tcp_v4_do_rcv mptcp_nl_remove_addrs_list tcp_rcv_established mptcp_pm_remove_addrs_and_subflows tcp_data_queue remove_anno_list_by_saddr mptcp_incoming_options mptcp_pm_del_add_timer mptcp_pm_del_add_timer kfree(entry) In remove_anno_list_by_saddr(running on CPU2), after leaving the critical zone protected by "pm.lock", the entry will be released, which leads to the occurrence of uaf in the mptcp_pm_del_add_timer(running on CPU1). Keeping a reference to add_timer inside the lock, and calling sk_stop_timer_sync() with this reference, instead of "entry->add_timer". Move list_del(&entry->list) to mptcp_pm_del_add_timer and inside the pm lock, do not directly access any members of the entry outside the pm lock, which can avoid similar "entry->x" uaf.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e7814b028cd50b3ff79659d23dfa9da6a1e75e1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12134a652b0a10064844ea235173e70246eba6dcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3554482f4691571fc4b5490c17ae26896e62171c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6452b162549c7f9ef54655d3fb9977b9192e6e5bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67409b358500c71632116356a0b065f112d7b707Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4cd80b0338945a94972ac3ed54f8338d2da2076Patch
Impacted products
Vendor Product Version
Linux Linux Version: 5.10
Show details on NVD website

To clipboard 

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              "content": {
                "id": "CVE-2024-46858",
                "options": [
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                    "Automatable": "no"
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T13:57:46.692938Z",
                "version": "2.0.3"
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          "programFiles": [
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          "vendor": "Linux",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: Fix uaf in __timer_delete_sync\n\nThere are two paths to access mptcp_pm_del_add_timer, result in a race\ncondition:\n\n     CPU1\t\t\t\tCPU2\n     ====                               ====\n     net_rx_action\n     napi_poll                          netlink_sendmsg\n     __napi_poll                        netlink_unicast\n     process_backlog                    netlink_unicast_kernel\n     __netif_receive_skb                genl_rcv\n     __netif_receive_skb_one_core       netlink_rcv_skb\n     NF_HOOK                            genl_rcv_msg\n     ip_local_deliver_finish            genl_family_rcv_msg\n     ip_protocol_deliver_rcu            genl_family_rcv_msg_doit\n     tcp_v4_rcv                         mptcp_pm_nl_flush_addrs_doit\n     tcp_v4_do_rcv                      mptcp_nl_remove_addrs_list\n     tcp_rcv_established                mptcp_pm_remove_addrs_and_subflows\n     tcp_data_queue                     remove_anno_list_by_saddr\n     mptcp_incoming_options             mptcp_pm_del_add_timer\n     mptcp_pm_del_add_timer             kfree(entry)\n\nIn remove_anno_list_by_saddr(running on CPU2), after leaving the critical\nzone protected by \"pm.lock\", the entry will be released, which leads to the\noccurrence of uaf in the mptcp_pm_del_add_timer(running on CPU1).\n\nKeeping a reference to add_timer inside the lock, and calling\nsk_stop_timer_sync() with this reference, instead of \"entry-\u003eadd_timer\".\n\nMove list_del(\u0026entry-\u003elist) to mptcp_pm_del_add_timer and inside the pm lock,\ndo not directly access any members of the entry outside the pm lock, which\ncan avoid similar \"entry-\u003ex\" uaf."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:24:52.386Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/3554482f4691571fc4b5490c17ae26896e62171c"
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        },
        {
          "url": "https://git.kernel.org/stable/c/b4cd80b0338945a94972ac3ed54f8338d2da2076"
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      "title": "mptcp: pm: Fix uaf in __timer_delete_sync",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-46858",
    "datePublished": "2024-09-27T12:42:49.167Z",
    "dateReserved": "2024-09-11T15:12:18.291Z",
    "dateUpdated": "2024-12-19T09:24:52.386Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-46858\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-27T13:15:17.353\",\"lastModified\":\"2024-10-17T14:15:13.017\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmptcp: pm: Fix uaf in __timer_delete_sync\\n\\nThere are two paths to access mptcp_pm_del_add_timer, result in a race\\ncondition:\\n\\n     CPU1\\t\\t\\t\\tCPU2\\n     ====                               ====\\n     net_rx_action\\n     napi_poll                          netlink_sendmsg\\n     __napi_poll                        netlink_unicast\\n     process_backlog                    netlink_unicast_kernel\\n     __netif_receive_skb                genl_rcv\\n     __netif_receive_skb_one_core       netlink_rcv_skb\\n     NF_HOOK                            genl_rcv_msg\\n     ip_local_deliver_finish            genl_family_rcv_msg\\n     ip_protocol_deliver_rcu            genl_family_rcv_msg_doit\\n     tcp_v4_rcv                         mptcp_pm_nl_flush_addrs_doit\\n     tcp_v4_do_rcv                      mptcp_nl_remove_addrs_list\\n     tcp_rcv_established                mptcp_pm_remove_addrs_and_subflows\\n     tcp_data_queue                     remove_anno_list_by_saddr\\n     mptcp_incoming_options             mptcp_pm_del_add_timer\\n     mptcp_pm_del_add_timer             kfree(entry)\\n\\nIn remove_anno_list_by_saddr(running on CPU2), after leaving the critical\\nzone protected by \\\"pm.lock\\\", the entry will be released, which leads to the\\noccurrence of uaf in the mptcp_pm_del_add_timer(running on CPU1).\\n\\nKeeping a reference to add_timer inside the lock, and calling\\nsk_stop_timer_sync() with this reference, instead of \\\"entry-\u003eadd_timer\\\".\\n\\nMove list_del(\u0026entry-\u003elist) to mptcp_pm_del_add_timer and inside the pm lock,\\ndo not directly access any members of the entry outside the pm lock, which\\ncan avoid similar \\\"entry-\u003ex\\\" uaf.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp:pm: Se corrige uaf en __timer_delete_sync Hay dos rutas para acceder a mptcp_pm_del_add_timer, lo que genera una condici\u00f3n de carrera: CPU1 CPU2 ==== ==== net_rx_action napi_poll netlink_sendmsg __napi_poll netlink_unicast process_backlog netlink_unicast_kernel __netif_receive_skb genl_rcv __netif_receive_skb_one_core netlink_rcv_skb NF_HOOK genl_rcv_msg ip_local_deliver_finish genl_family_rcv_msg ip_protocol_deliver_rcu genl_family_rcv_msg_doit tcp_v4_rcv mptcp_pm_nl_flush_addrs_doit tcp_v4_do_rcv mptcp_nl_remove_addrs_list tcp_rcv_established mptcp_pm_remove_addrs_and_subflows tcp_data_queue remove_anno_list_by_saddr mptcp_incoming_options mptcp_pm_del_add_timer mptcp_pm_del_add_timer kfree(entrada) En remove_anno_list_by_saddr(que se ejecuta en la CPU2), despu\u00e9s de salir de la zona cr\u00edtica protegida por \\\"pm.lock\\\", se liberar\u00e1 la entrada, lo que lleva a la aparici\u00f3n de uaf en mptcp_pm_del_add_timer(que se ejecuta en la CPU1). Mantener una referencia a add_timer dentro del bloqueo y llamar a sk_stop_timer_sync() con esta referencia, en lugar de \\\"entrada-\u0026gt;add_timer\\\". Mueva list_del(\u0026amp;entry-\u0026gt;list) a mptcp_pm_del_add_timer y dentro del bloqueo pm, no acceda directamente a ning\u00fan miembro de la entrada fuera del bloqueo pm, lo que puede evitar un uaf \\\"entry-\u0026gt;x\\\" similar.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10\",\"versionEndExcluding\":\"6.1.111\",\"matchCriteriaId\":\"2B62FC78-DC08-42C4-9B1A-D1F4632DBBE5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.52\",\"matchCriteriaId\":\"02ADDA94-95BB-484D-8E95-63C0428A28E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.11\",\"matchCriteriaId\":\"F5DB5367-F1F5-4200-B3B3-FDF8AFC3D255\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"B77A9280-37E6-49AD-B559-5B23A3B1DC3D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE5298B3-04B4-4F3E-B186-01A58B5C75A6\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0e7814b028cd50b3ff79659d23dfa9da6a1e75e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/12134a652b0a10064844ea235173e70246eba6dc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3554482f4691571fc4b5490c17ae26896e62171c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6452b162549c7f9ef54655d3fb9977b9192e6e5b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/67409b358500c71632116356a0b065f112d7b707\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b4cd80b0338945a94972ac3ed54f8338d2da2076\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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