CVE-2024-26857 (GCVE-0-2024-26857)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:17 – Updated: 2025-05-04 08:58
VLAI?
Title
geneve: make sure to pull inner header in geneve_rx()
Summary
In the Linux kernel, the following vulnerability has been resolved: geneve: make sure to pull inner header in geneve_rx() syzbot triggered a bug in geneve_rx() [1] Issue is similar to the one I fixed in commit 8d975c15c0cd ("ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()") We have to save skb->network_header in a temporary variable in order to be able to recompute the network_header pointer after a pskb_inet_may_pull() call. pskb_inet_may_pull() makes sure the needed headers are in skb->head. [1] BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] BUG: KMSAN: uninit-value in geneve_rx drivers/net/geneve.c:279 [inline] BUG: KMSAN: uninit-value in geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391 IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] geneve_rx drivers/net/geneve.c:279 [inline] geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391 udp_queue_rcv_one_skb+0x1d39/0x1f20 net/ipv4/udp.c:2108 udp_queue_rcv_skb+0x6ae/0x6e0 net/ipv4/udp.c:2186 udp_unicast_rcv_skb+0x184/0x4b0 net/ipv4/udp.c:2346 __udp4_lib_rcv+0x1c6b/0x3010 net/ipv4/udp.c:2422 udp_rcv+0x7d/0xa0 net/ipv4/udp.c:2604 ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:461 [inline] ip_rcv_finish net/ipv4/ip_input.c:449 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5534 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648 process_backlog+0x480/0x8b0 net/core/dev.c:5976 __napi_poll+0xe3/0x980 net/core/dev.c:6576 napi_poll net/core/dev.c:6645 [inline] net_rx_action+0x8b8/0x1870 net/core/dev.c:6778 __do_softirq+0x1b7/0x7c5 kernel/softirq.c:553 do_softirq+0x9a/0xf0 kernel/softirq.c:454 __local_bh_enable_ip+0x9b/0xa0 kernel/softirq.c:381 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:820 [inline] __dev_queue_xmit+0x2768/0x51c0 net/core/dev.c:4378 dev_queue_xmit include/linux/netdevice.h:3171 [inline] packet_xmit+0x9c/0x6b0 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3081 [inline] packet_sendmsg+0x8aef/0x9f10 net/packet/af_packet.c:3113 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x735/0xa10 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook mm/slub.c:3819 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc_node+0x5cb/0xbc0 mm/slub.c:3903 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x352/0x790 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1296 [inline] alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6394 sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2783 packet_alloc_skb net/packet/af_packet.c:2930 [inline] packet_snd net/packet/af_packet.c:3024 [inline] packet_sendmsg+0x70c2/0x9f10 net/packet/af_packet.c:3113 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x735/0xa10 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b , < e431c3227864b5646601c97f5f898d99472f2914 (git)
Affected: 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b , < 59d2a4076983303f324557a114cfd5c32e1f6b29 (git)
Affected: 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b , < c7137900691f5692fe3de54566ea7b30bb35d66c (git)
Affected: 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b , < e77e0b0f2a11735c64b105edaee54d6344faca8a (git)
Affected: 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b , < c0b22568a9d8384fd000cc49acb8f74bde40d1b5 (git)
Affected: 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b , < 0ece581d2a66e8e488c0d3b3e7b5760dbbfdbdd5 (git)
Affected: 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b , < 048e16dee1fc609c1c85072ccd70bfd4b5fef6ca (git)
Affected: 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b , < 1ca1ba465e55b9460e4e75dec9fff31e708fec74 (git)
Create a notification for this product.
    Linux Linux Affected: 4.2
Unaffected: 0 , < 4.2 (semver)
Unaffected: 4.19.310 , ≤ 4.19.* (semver)
Unaffected: 5.4.272 , ≤ 5.4.* (semver)
Unaffected: 5.10.213 , ≤ 5.10.* (semver)
Unaffected: 5.15.152 , ≤ 5.15.* (semver)
Unaffected: 6.1.82 , ≤ 6.1.* (semver)
Unaffected: 6.6.22 , ≤ 6.6.* (semver)
Unaffected: 6.7.10 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngeneve: make sure to pull inner header in geneve_rx()\n\nsyzbot triggered a bug in geneve_rx() [1]\n\nIssue is similar to the one I fixed in commit 8d975c15c0cd\n(\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\")\n\nWe have to save skb-\u003enetwork_header in a temporary variable\nin order to be able to recompute the network_header pointer\nafter a pskb_inet_may_pull() call.\n\npskb_inet_may_pull() makes sure the needed headers are in skb-\u003ehead.\n\n[1]\nBUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n BUG: KMSAN: uninit-value in geneve_rx drivers/net/geneve.c:279 [inline]\n BUG: KMSAN: uninit-value in geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n  geneve_rx drivers/net/geneve.c:279 [inline]\n  geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391\n  udp_queue_rcv_one_skb+0x1d39/0x1f20 net/ipv4/udp.c:2108\n  udp_queue_rcv_skb+0x6ae/0x6e0 net/ipv4/udp.c:2186\n  udp_unicast_rcv_skb+0x184/0x4b0 net/ipv4/udp.c:2346\n  __udp4_lib_rcv+0x1c6b/0x3010 net/ipv4/udp.c:2422\n  udp_rcv+0x7d/0xa0 net/ipv4/udp.c:2604\n  ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\n  ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\n  dst_input include/net/dst.h:461 [inline]\n  ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\n  __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\n  process_backlog+0x480/0x8b0 net/core/dev.c:5976\n  __napi_poll+0xe3/0x980 net/core/dev.c:6576\n  napi_poll net/core/dev.c:6645 [inline]\n  net_rx_action+0x8b8/0x1870 net/core/dev.c:6778\n  __do_softirq+0x1b7/0x7c5 kernel/softirq.c:553\n  do_softirq+0x9a/0xf0 kernel/softirq.c:454\n  __local_bh_enable_ip+0x9b/0xa0 kernel/softirq.c:381\n  local_bh_enable include/linux/bottom_half.h:33 [inline]\n  rcu_read_unlock_bh include/linux/rcupdate.h:820 [inline]\n  __dev_queue_xmit+0x2768/0x51c0 net/core/dev.c:4378\n  dev_queue_xmit include/linux/netdevice.h:3171 [inline]\n  packet_xmit+0x9c/0x6b0 net/packet/af_packet.c:276\n  packet_snd net/packet/af_packet.c:3081 [inline]\n  packet_sendmsg+0x8aef/0x9f10 net/packet/af_packet.c:3113\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg net/socket.c:745 [inline]\n  __sys_sendto+0x735/0xa10 net/socket.c:2191\n  __do_sys_sendto net/socket.c:2203 [inline]\n  __se_sys_sendto net/socket.c:2199 [inline]\n  __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nUninit was created at:\n  slab_post_alloc_hook mm/slub.c:3819 [inline]\n  slab_alloc_node mm/slub.c:3860 [inline]\n  kmem_cache_alloc_node+0x5cb/0xbc0 mm/slub.c:3903\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560\n  __alloc_skb+0x352/0x790 net/core/skbuff.c:651\n  alloc_skb include/linux/skbuff.h:1296 [inline]\n  alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6394\n  sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2783\n  packet_alloc_skb net/packet/af_packet.c:2930 [inline]\n  packet_snd net/packet/af_packet.c:3024 [inline]\n  packet_sendmsg+0x70c2/0x9f10 net/packet/af_packet.c:3113\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg net/socket.c:745 [inline]\n  __sys_sendto+0x735/0xa10 net/socket.c:2191\n  __do_sys_sendto net/socket.c:2203 [inline]\n  __se_sys_sendto net/socket.c:2199 [inline]\n  __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b"
        }
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      "providerMetadata": {
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        {
          "url": "https://git.kernel.org/stable/c/1ca1ba465e55b9460e4e75dec9fff31e708fec74"
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      "title": "geneve: make sure to pull inner header in geneve_rx()",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26857",
    "datePublished": "2024-04-17T10:17:19.115Z",
    "dateReserved": "2024-02-19T14:20:24.183Z",
    "dateUpdated": "2025-05-04T08:58:06.505Z",
    "state": "PUBLISHED"
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{\"id\": \"CVE-2024-26857\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-12T17:32:22.775976Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-12T17:32:54.215Z\"}}], \"cna\": {\"title\": \"geneve: make sure to pull inner header in geneve_rx()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b\", \"lessThan\": \"e431c3227864b5646601c97f5f898d99472f2914\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": 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\"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.82\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.22\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/geneve.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/e431c3227864b5646601c97f5f898d99472f2914\"}, {\"url\": \"https://git.kernel.org/stable/c/59d2a4076983303f324557a114cfd5c32e1f6b29\"}, {\"url\": \"https://git.kernel.org/stable/c/c7137900691f5692fe3de54566ea7b30bb35d66c\"}, {\"url\": \"https://git.kernel.org/stable/c/e77e0b0f2a11735c64b105edaee54d6344faca8a\"}, {\"url\": 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skb-\u003ehead.\\n\\n[1]\\nBUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n BUG: KMSAN: uninit-value in geneve_rx drivers/net/geneve.c:279 [inline]\\n BUG: KMSAN: uninit-value in geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391\\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\\n  geneve_rx drivers/net/geneve.c:279 [inline]\\n  geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391\\n  udp_queue_rcv_one_skb+0x1d39/0x1f20 net/ipv4/udp.c:2108\\n  udp_queue_rcv_skb+0x6ae/0x6e0 net/ipv4/udp.c:2186\\n  udp_unicast_rcv_skb+0x184/0x4b0 net/ipv4/udp.c:2346\\n  __udp4_lib_rcv+0x1c6b/0x3010 net/ipv4/udp.c:2422\\n  udp_rcv+0x7d/0xa0 net/ipv4/udp.c:2604\\n  ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\\n  ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\\n  dst_input include/net/dst.h:461 [inline]\\n  ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\\n  NF_HOOK include/linux/netfilter.h:314 [inline]\\n  ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\\n  __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\\n  process_backlog+0x480/0x8b0 net/core/dev.c:5976\\n  __napi_poll+0xe3/0x980 net/core/dev.c:6576\\n  napi_poll net/core/dev.c:6645 [inline]\\n  net_rx_action+0x8b8/0x1870 net/core/dev.c:6778\\n  __do_softirq+0x1b7/0x7c5 kernel/softirq.c:553\\n  do_softirq+0x9a/0xf0 kernel/softirq.c:454\\n  __local_bh_enable_ip+0x9b/0xa0 kernel/softirq.c:381\\n  local_bh_enable include/linux/bottom_half.h:33 [inline]\\n  rcu_read_unlock_bh include/linux/rcupdate.h:820 [inline]\\n  __dev_queue_xmit+0x2768/0x51c0 net/core/dev.c:4378\\n  dev_queue_xmit include/linux/netdevice.h:3171 [inline]\\n  packet_xmit+0x9c/0x6b0 net/packet/af_packet.c:276\\n  packet_snd net/packet/af_packet.c:3081 [inline]\\n  packet_sendmsg+0x8aef/0x9f10 net/packet/af_packet.c:3113\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg net/socket.c:745 [inline]\\n  __sys_sendto+0x735/0xa10 net/socket.c:2191\\n  __do_sys_sendto net/socket.c:2203 [inline]\\n  __se_sys_sendto net/socket.c:2199 [inline]\\n  __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\\n\\nUninit was created at:\\n  slab_post_alloc_hook mm/slub.c:3819 [inline]\\n  slab_alloc_node mm/slub.c:3860 [inline]\\n  kmem_cache_alloc_node+0x5cb/0xbc0 mm/slub.c:3903\\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560\\n  __alloc_skb+0x352/0x790 net/core/skbuff.c:651\\n  alloc_skb include/linux/skbuff.h:1296 [inline]\\n  alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6394\\n  sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2783\\n  packet_alloc_skb net/packet/af_packet.c:2930 [inline]\\n  packet_snd 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      "cveMetadata": "{\"cveId\": \"CVE-2024-26857\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:58:06.505Z\", \"dateReserved\": \"2024-02-19T14:20:24.183Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:17:19.115Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.