{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2024-26882","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-19T14:20:24.185Z","datePublished":"2024-04-17T10:27:38.389Z","dateUpdated":"2025-05-04T08:58:47.122Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:58:47.122Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\n\nApply the same fix than ones found in :\n\n8d975c15c0cd (\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\")\n1ca1ba465e55 (\"geneve: make sure to pull inner header in geneve_rx()\")\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\nsyzbot reported:\nBUG: 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 IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\n  __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n  INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n  IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n  ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\n  __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389\n  ipgre_rcv net/ipv4/ip_gre.c:411 [inline]\n  gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447\n  gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163\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  netif_receive_skb_internal net/core/dev.c:5734 [inline]\n  netif_receive_skb+0x58/0x660 net/core/dev.c:5793\n  tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556\n  tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\n  call_write_iter include/linux/fs.h:2087 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0xb6b/0x1520 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+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nUninit was created at:\n  __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590\n  alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133\n  alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204\n  skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909\n  tun_build_skb drivers/net/tun.c:1686 [inline]\n  tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826\n  tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\n  call_write_iter include/linux/fs.h:2087 [inline]\n  new_sync_write fs/read_write.c:497 [inline]\n  vfs_write+0xb6b/0x1520 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+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":["net/ipv4/ip_tunnel.c"],"versions":[{"version":"c54419321455631079c7d6e60bc732dd0c5914c5","lessThan":"ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b","status":"affected","versionType":"git"},{"version":"c54419321455631079c7d6e60bc732dd0c5914c5","lessThan":"77fd5294ea09b21f6772ac954a121b87323cec80","status":"affected","versionType":"git"},{"version":"c54419321455631079c7d6e60bc732dd0c5914c5","lessThan":"5c03387021cfa3336b97e0dcba38029917a8af2a","status":"affected","versionType":"git"},{"version":"c54419321455631079c7d6e60bc732dd0c5914c5","lessThan":"60044ab84836359534bd7153b92e9c1584140e4a","status":"affected","versionType":"git"},{"version":"c54419321455631079c7d6e60bc732dd0c5914c5","lessThan":"c4c857723b37c20651300b3de4ff25059848b4b0","status":"affected","versionType":"git"},{"version":"c54419321455631079c7d6e60bc732dd0c5914c5","lessThan":"f6723d8dbfdc10c784a56748f86a9a3cd410dbd5","status":"affected","versionType":"git"},{"version":"c54419321455631079c7d6e60bc732dd0c5914c5","lessThan":"ca914f1cdee8a85799942c9b0ce5015bbd6844e1","status":"affected","versionType":"git"},{"version":"c54419321455631079c7d6e60bc732dd0c5914c5","lessThan":"b0ec2abf98267f14d032102551581c833b0659d3","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/ip_tunnel.c"],"versions":[{"version":"3.10","status":"affected"},{"version":"0","lessThan":"3.10","status":"unaffected","versionType":"semver"},{"version":"5.4.273","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.214","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.153","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.83","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.23","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.11","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8.2","lessThanOrEqual":"6.8.*","status":"unaffected","versionType":"semver"},{"version":"6.9","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":"3.10","versionEndExcluding":"5.4.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.10.214"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.15.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.1.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.6.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.8.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.9"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b"},{"url":"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80"},{"url":"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a"},{"url":"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a"},{"url":"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0"},{"url":"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5"},{"url":"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1"},{"url":"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3"}],"title":"net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()","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":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-07-16T18:00:36.614107Z","id":"CVE-2024-26882","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":"2024-11-08T21:14:07.724Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20241220-0002/"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-12-20T13:06:43.371Z"}}]},"dataVersion":"5.1"}