{"cve":{"cve_id":"CVE-2024-26641","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00573,"epss_percentile":0.44845,"epss_as_of":"2026-08-26","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\n\nsyzbot found __ip6_tnl_rcv() could access unitiliazed data [1].\n\nCall pskb_inet_may_pull() to fix this, and initialize ipv6h\nvariable after this call as it can change skb->head.\n\n[1]\n BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n BUG: KMSAN: uninit-value in IP6_ECN_decapsulate+0x7df/0x1e50 include/net/inet_ecn.h:321\n  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n  IP6_ECN_decapsulate+0x7df/0x1e50 include/net/inet_ecn.h:321\n  ip6ip6_dscp_ecn_decapsulate+0x178/0x1b0 net/ipv6/ip6_tunnel.c:727\n  __ip6_tnl_rcv+0xd4e/0x1590 net/ipv6/ip6_tunnel.c:845\n  ip6_tnl_rcv+0xce/0x100 net/ipv6/ip6_tunnel.c:888\n gre_rcv+0x143f/0x1870\n  ip6_protocol_deliver_rcu+0xda6/0x2a60 net/ipv6/ip6_input.c:438\n  ip6_input_finish net/ipv6/ip6_input.c:483 [inline]\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492\n  ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586\n  dst_input include/net/dst.h:461 [inline]\n  ip6_rcv_finish+0x5db/0x870 net/ipv6/ip6_input.c:79\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ipv6_rcv+0xda/0x390 net/ipv6/ip6_input.c:310\n  __netif_receive_skb_one_core net/core/dev.c:5532 [inline]\n  __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5646\n  netif_receive_skb_internal net/core/dev.c:5732 [inline]\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5791\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555\n  tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\n  call_write_iter include/linux/fs.h:2084 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0x786/0x1200 fs/read_write.c:590\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\n  __do_sys_write fs/read_write.c:655 [inline]\n  __se_sys_write fs/read_write.c:652 [inline]\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nUninit was created at:\n  slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768\n  slab_alloc_node mm/slub.c:3478 [inline]\n  kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560\n  __alloc_skb+0x318/0x740 net/core/skbuff.c:651\n  alloc_skb include/linux/skbuff.h:1286 [inline]\n  alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6334\n  sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2787\n  tun_alloc_skb drivers/net/tun.c:1531 [inline]\n  tun_get_user+0x1e8a/0x66d0 drivers/net/tun.c:1846\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\n  call_write_iter include/linux/fs.h:2084 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0x786/0x1200 fs/read_write.c:590\n  ksys_write+0x20f/0x4c0 fs/read_write.c:643\n  __do_sys_write fs/read_write.c:655 [inline]\n  __se_sys_write fs/read_write.c:652 [inline]\n  __x64_sys_write+0x93/0xd0 fs/read_write.c:652\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nCPU: 0 PID: 5034 Comm: syz-executor331 Not tainted 6.7.0-syzkaller-00562-g9f8413c4a66f #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023","published_at":"2024-03-18T10:19:07.581000Z","last_modified_at":"2026-08-04T11:16:52.303000Z","cvss_v3_score":8.6,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":false,"ssvc_technical_impact":"partial","cwes":["CWE-908"],"nvd_references":["https://git.kernel.org/stable/c/a9bc32879a08f23cdb80a48c738017e39aea1080","https://git.kernel.org/stable/c/af6b5c50d47ab43e5272ad61935d0ed2e264d3f0","https://git.kernel.org/stable/c/d54e4da98bbfa8c257bdca94c49652d81d18a4d8","https://git.kernel.org/stable/c/350a6640fac4b53564ec20aa3f4a0922cb0ba5e6","https://git.kernel.org/stable/c/c835df3bcc14858ae9b27315dd7de76370b94f3a","https://git.kernel.org/stable/c/8d975c15c0cd744000ca386247432d57b21f9df0"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-08-05T05:42:46.317731Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"debian","vendor_name":"debian","product_slug":"debian-linux","product_name":"debian_linux","version_start":"10.0","version_start_inclusive":true,"version_end":"10.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0d3c703a9d1723c7707e0680019ac8ff5922db42","version_start_inclusive":true,"version_end":"d54e4da98bbfa8c257bdca94c49652d81d18a4d8","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0d3c703a9d1723c7707e0680019ac8ff5922db42:d54e4da98bbfa8c257bdca94c49652d81d18a4d8"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0d3c703a9d1723c7707e0680019ac8ff5922db42","version_start_inclusive":true,"version_end":"350a6640fac4b53564ec20aa3f4a0922cb0ba5e6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0d3c703a9d1723c7707e0680019ac8ff5922db42:350a6640fac4b53564ec20aa3f4a0922cb0ba5e6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0d3c703a9d1723c7707e0680019ac8ff5922db42","version_start_inclusive":true,"version_end":"c835df3bcc14858ae9b27315dd7de76370b94f3a","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0d3c703a9d1723c7707e0680019ac8ff5922db42:c835df3bcc14858ae9b27315dd7de76370b94f3a"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0d3c703a9d1723c7707e0680019ac8ff5922db42","version_start_inclusive":true,"version_end":"8d975c15c0cd744000ca386247432d57b21f9df0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0d3c703a9d1723c7707e0680019ac8ff5922db42:8d975c15c0cd744000ca386247432d57b21f9df0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"4.7","version_start_inclusive":true,"version_end":"4.7","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:4.7:4.7"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"4.7","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:4.7"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10.210","version_start_inclusive":true,"version_end":"5.10.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.10.210:5.10.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.149","version_start_inclusive":true,"version_end":"5.15.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15.149:5.15.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.77","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.77:6.1.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.16","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.16:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.7.4","version_start_inclusive":true,"version_end":"6.7.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.7.4:6.7.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.8","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.8:*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0d3c703a9d1723c7707e0680019ac8ff5922db42","version_start_inclusive":true,"version_end":"a9bc32879a08f23cdb80a48c738017e39aea1080","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0d3c703a9d1723c7707e0680019ac8ff5922db42:a9bc32879a08f23cdb80a48c738017e39aea1080"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0d3c703a9d1723c7707e0680019ac8ff5922db42","version_start_inclusive":true,"version_end":"af6b5c50d47ab43e5272ad61935d0ed2e264d3f0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0d3c703a9d1723c7707e0680019ac8ff5922db42:af6b5c50d47ab43e5272ad61935d0ed2e264d3f0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux-kernel","product_name":"Linux 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Select Deploy administration utility","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/a9bc32879a08f23cdb80a48c738017e39aea1080","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/af6b5c50d47ab43e5272ad61935d0ed2e264d3f0","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/d54e4da98bbfa8c257bdca94c49652d81d18a4d8","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/350a6640fac4b53564ec20aa3f4a0922cb0ba5e6","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c835df3bcc14858ae9b27315dd7de76370b94f3a","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/8d975c15c0cd744000ca386247432d57b21f9df0","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2024-03-18T10:19:07.581000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-06-29T01:54:25.093190Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:54:25.093190Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:54:25.093190Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-08-04T10:17:26.045475Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-08-04T10:17:26.045475Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-08-04T10:17:26.045475Z","label":"CVSS score revised","source":"cvelistv5"}]}