{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-35973", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-35973", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-05-20T09:42:00.475Z", "updatedAt": "2026-10-15T00:41:50.846Z", "importedAt": "2026-10-24T01:57:11.582Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "geneve: fix header validation in geneve[6]_xmit_skb", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ngeneve: fix header validation in geneve[6]_xmit_skb\n\nsyzbot is able to trigger an uninit-value in geneve_xmit() [1]\n\nProblem : While most ip tunnel helpers (like ip_tunnel_get_dsfield())\nuses skb_protocol(skb, true), pskb_inet_may_pull() is only using\nskb->protocol.\n\nIf anything else than ETH_P_IPV6 or ETH_P_IP is found in skb->protocol,\npskb_inet_may_pull() does nothing at all.\n\nIf a vlan tag was provided by the caller (af_packet in the syzbot case),\nthe network header might not point to the correct location, and skb\nlinear part could be smaller than expected.\n\nAdd skb_vlan_inet_prepare() to perform a complete mac validation.\n\nUse this in geneve for the moment, I suspect we need to adopt this\nmore broadly.\n\nv4 - Jakub reported v3 broke l2_tos_ttl_inherit.sh selftest\n - Only call __vlan_get_protocol() for vlan types.\n\nv2,v3 - Addressed Sabrina comments on v1 and v2\n\n[1]\n\nBUG: KMSAN: uninit-value in geneve_xmit_skb drivers/net/geneve.c:910 [inline]\n BUG: KMSAN: uninit-value in geneve_xmit+0x302d/0x5420 drivers/net/geneve.c:1030\n geneve_xmit_skb drivers/net/geneve.c:910 [inline]\n geneve_xmit+0x302d/0x5420 drivers/net/geneve.c:1030\n __netdev_start_xmit include/linux/netdevice.h:4903 [inline]\n netdev_start_xmit include/linux/netdevice.h:4917 [inline]\n xmit_one net/core/dev.c:3531 [inline]\n dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3547\n __dev_queue_xmit+0x348d/0x52c0 net/core/dev.c:4335\n dev_queue_xmit include/linux/netdevice.h:3091 [inline]\n packet_xmit+0x9c/0x6c0 net/packet/af_packet.c:276\n packet_snd net/packet/af_packet.c:3081 [inline]\n packet_sendmsg+0x8bb0/0x9ef0 net/packet/af_packet.c:3113\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0x30f/0x380 net/socket.c:745\n __sys_sendto+0x685/0x830 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+0x125/0x1d0 net/socket.c:2199\n do_syscall_64+0xd5/0x1f0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\n\nUninit was created at:\n slab_post_alloc_hook mm/slub.c:3804 [inline]\n slab_alloc_node mm/slub.c:3845 [inline]\n kmem_cache_alloc_node+0x613/0xc50 mm/slub.c:3888\n kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:577\n __alloc_skb+0x35b/0x7a0 net/core/skbuff.c:668\n alloc_skb include/linux/skbuff.h:1318 [inline]\n alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6504\n sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2795\n packet_alloc_skb net/packet/af_packet.c:2930 [inline]\n packet_snd net/packet/af_packet.c:3024 [inline]\n packet_sendmsg+0x722d/0x9ef0 net/packet/af_packet.c:3113\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0x30f/0x380 net/socket.c:745\n __sys_sendto+0x685/0x830 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+0x125/0x1d0 net/socket.c:2199\n do_syscall_64+0xd5/0x1f0\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\n\nCPU: 0 PID: 5033 Comm: syz-executor346 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "35385daa8db320d2d9664930c28e732578b0d7de", "status": "affected", "versionType": "git", "lessThan": "43be590456e1f3566054ce78ae2dbb68cbe1a536" }, { "version": "6f92124d74419797fadfbcd5b7a72c384a6413ad", "status": "affected", "versionType": "git", "lessThan": "d3adf11d7993518a39bd02b383cfe657ccc0023c" }, { "version": "71ad9260c001b217d704cda88ecea251b2d367da", "status": "affected", "versionType": "git", "lessThan": "10204df9beda4978bd1d0c2db0d8375bfb03b915" }, { "version": "d13f048dd40e8577260cd43faea8ec9b77520197", "status": "affected", "versionType": "git", "lessThan": "3c1ae6de74e3d2d6333d29a2d3e13e6094596c79" }, { "version": "d13f048dd40e8577260cd43faea8ec9b77520197", "status": "affected", "versionType": "git", "lessThan": "4a1b65d1e55d53b397cb27014208be1e04172670" }, { "version": "d13f048dd40e8577260cd43faea8ec9b77520197", "status": "affected", "versionType": "git", "lessThan": "190d9efa5773f26d6f334b1b8be282c4fa13fd5e" }, { "version": "d13f048dd40e8577260cd43faea8ec9b77520197", "status": "affected", "versionType": "git", "lessThan": "357163fff3a6e48fe74745425a32071ec9caf852" }, { "version": "d13f048dd40e8577260cd43faea8ec9b77520197", "status": "affected", "versionType": "git", "lessThan": "d8a6213d70accb403b82924a1c229e733433a5ef" }, { "version": "9a51e36ebf433adf59c051bec33f5aa54640bb4d", "status": "affected", "versionType": "git" }, { "version": "21815f28af8081b258552c111774ff320cf38d38", "status": "affected", "versionType": "git" }, { "version": "4.19.191", "status": "affected", "versionType": "semver", "lessThan": "4.19.313" }, { "version": "5.4.119", "status": "affected", "versionType": "semver", "lessThan": "5.4.275" }, { "version": "5.10.37", "status": "affected", "versionType": "semver", "lessThan": "5.10.216" }, { "version": "5.11.21", "status": "affected", "versionType": "semver", "lessThan": "5.12" }, { "version": "5.12.4", "status": "affected", "versionType": "semver", "lessThan": "5.13" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.13" }, { "version": "4.19.313", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.275", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.216", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.156", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.87", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.28", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.8.7", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.8.*" }, { "version": "6.9", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }