{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2024-26857","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-19T14:20:24.183Z","datePublished":"2024-04-17T10:17:19.115Z","dateUpdated":"2026-05-11T20:05:28.448Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T20:05:28.448Z"},"descriptions":[{"lang":"en","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->network_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->head.\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"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/geneve.c"],"versions":[{"version":"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b","lessThan":"e431c3227864b5646601c97f5f898d99472f2914","status":"affected","versionType":"git"},{"version":"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b","lessThan":"59d2a4076983303f324557a114cfd5c32e1f6b29","status":"affected","versionType":"git"},{"version":"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b","lessThan":"c7137900691f5692fe3de54566ea7b30bb35d66c","status":"affected","versionType":"git"},{"version":"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b","lessThan":"e77e0b0f2a11735c64b105edaee54d6344faca8a","status":"affected","versionType":"git"},{"version":"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b","lessThan":"c0b22568a9d8384fd000cc49acb8f74bde40d1b5","status":"affected","versionType":"git"},{"version":"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b","lessThan":"0ece581d2a66e8e488c0d3b3e7b5760dbbfdbdd5","status":"affected","versionType":"git"},{"version":"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b","lessThan":"048e16dee1fc609c1c85072ccd70bfd4b5fef6ca","status":"affected","versionType":"git"},{"version":"2d07dc79fe04a43d82a346ced6bbf07bdb523f1b","lessThan":"1ca1ba465e55b9460e4e75dec9fff31e708fec74","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/geneve.c"],"versions":[{"version":"4.2","status":"affected"},{"version":"0","lessThan":"4.2","status":"unaffected","versionType":"semver"},{"version":"4.19.310","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.272","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.213","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.152","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.82","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.22","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.10","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.19.310"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.4.272"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.10.213"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.15.152"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.1.82"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.6.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.7.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.8"}]}]}],"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":"https://git.kernel.org/stable/c/c0b22568a9d8384fd000cc49acb8f74bde40d1b5"},{"url":"https://git.kernel.org/stable/c/0ece581d2a66e8e488c0d3b3e7b5760dbbfdbdd5"},{"url":"https://git.kernel.org/stable/c/048e16dee1fc609c1c85072ccd70bfd4b5fef6ca"},{"url":"https://git.kernel.org/stable/c/1ca1ba465e55b9460e4e75dec9fff31e708fec74"}],"title":"geneve: make sure to pull inner header in geneve_rx()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","lang":"en","description":"CWE-noinfo Not enough information"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-06-12T17:32:22.775976Z","id":"CVE-2024-26857","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-11-06T16:53:14.290Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T00:14:13.648Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/e431c3227864b5646601c97f5f898d99472f2914","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/59d2a4076983303f324557a114cfd5c32e1f6b29","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c7137900691f5692fe3de54566ea7b30bb35d66c","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/e77e0b0f2a11735c64b105edaee54d6344faca8a","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c0b22568a9d8384fd000cc49acb8f74bde40d1b5","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/0ece581d2a66e8e488c0d3b3e7b5760dbbfdbdd5","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/048e16dee1fc609c1c85072ccd70bfd4b5fef6ca","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/1ca1ba465e55b9460e4e75dec9fff31e708fec74","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","tags":["x_transferred"]}]}]},"dataVersion":"5.2"}