{"id":"CVE-2024-44999","state":"PUBLISHED","title":"gtp: pull network headers in gtp_dev_xmit()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ngtp: pull network headers in gtp_dev_xmit()\n\nsyzbot/KMSAN reported use of uninit-value in get_dev_xmit() [1]\n\nWe must make sure the IPv4 or Ipv6 header is pulled in skb->head\nbefore accessing fields in them.\n\nUse pskb_inet_may_pull() to fix this issue.\n\n[1]\nBUG: KMSAN: uninit-value in ipv6_pdp_find drivers/net/gtp.c:220 [inline]\n BUG: KMSAN: uninit-value in gtp_build_skb_ip6 drivers/net/gtp.c:1229 [inline]\n BUG: KMSAN: uninit-value in gtp_dev_xmit+0x1424/0x2540 drivers/net/gtp.c:1281\n  ipv6_pdp_find drivers/net/gtp.c:220 [inline]\n  gtp_build_skb_ip6 drivers/net/gtp.c:1229 [inline]\n  gtp_dev_xmit+0x1424/0x2540 drivers/net/gtp.c:1281\n  __netdev_start_xmit include/linux/netdevice.h:4913 [inline]\n  netdev_start_xmit include/linux/netdevice.h:4922 [inline]\n  xmit_one net/core/dev.c:3580 [inline]\n  dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3596\n  __dev_queue_xmit+0x358c/0x5610 net/core/dev.c:4423\n  dev_queue_xmit include/linux/netdevice.h:3105 [inline]\n  packet_xmit+0x9c/0x6c0 net/packet/af_packet.c:276\n  packet_snd net/packet/af_packet.c:3145 [inline]\n  packet_sendmsg+0x90e3/0xa3a0 net/packet/af_packet.c:3177\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:2204\n  __do_sys_sendto net/socket.c:2216 [inline]\n  __se_sys_sendto net/socket.c:2212 [inline]\n  __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212\n  x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was created at:\n  slab_post_alloc_hook mm/slub.c:3994 [inline]\n  slab_alloc_node mm/slub.c:4037 [inline]\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4080\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:583\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:674\n  alloc_skb include/linux/skbuff.h:1320 [inline]\n  alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6526\n  sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2815\n  packet_alloc_skb net/packet/af_packet.c:2994 [inline]\n  packet_snd net/packet/af_packet.c:3088 [inline]\n  packet_sendmsg+0x749c/0xa3a0 net/packet/af_packet.c:3177\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:2204\n  __do_sys_sendto net/socket.c:2216 [inline]\n  __se_sys_sendto net/socket.c:2212 [inline]\n  __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212\n  x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nCPU: 0 UID: 0 PID: 7115 Comm: syz.1.515 Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024","publishedAt":"2024-09-04T19:54:43.601Z","updatedAt":"2026-05-11T20:33:30.215Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"3d89d0c4a1c6d4d2a755e826351b0a101dbc86f3","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"f5dda8db382c5751c4e572afc7c99df7da1f83ca","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"cbb9a969fc190e85195d1b0f08038e7f6199044e","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"1f6b62392453d8f36685d19b761307a8c5617ac1","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"137d565ab89ce3584503b443bc9e00d44f482593","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"34ba4f29f3d9eb52dee37512059efb2afd7e966f","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"3939d787139e359b77aaf9485d1e145d6713d7b9","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"3a3be7ff9224f424e485287b54be00d2c6bd9c40","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/gtp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.7","versionType":"semver"},{"version":"4.19.321","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.283","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.225","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.166","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.107","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.48","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.10.7","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/gtp.c"]}],"references":["https://git.kernel.org/stable/c/3d89d0c4a1c6d4d2a755e826351b0a101dbc86f3","https://git.kernel.org/stable/c/f5dda8db382c5751c4e572afc7c99df7da1f83ca","https://git.kernel.org/stable/c/cbb9a969fc190e85195d1b0f08038e7f6199044e","https://git.kernel.org/stable/c/1f6b62392453d8f36685d19b761307a8c5617ac1","https://git.kernel.org/stable/c/137d565ab89ce3584503b443bc9e00d44f482593","https://git.kernel.org/stable/c/34ba4f29f3d9eb52dee37512059efb2afd7e966f","https://git.kernel.org/stable/c/3939d787139e359b77aaf9485d1e145d6713d7b9","https://git.kernel.org/stable/c/3a3be7ff9224f424e485287b54be00d2c6bd9c40","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:47.831Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/44xxx/CVE-2024-44999.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-44999","state":"PUBLISHED","datePublished":"2024-09-04T19:54:43.601Z","dateUpdated":"2026-05-11T20:33:30.215Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-08-21T05:34:56.672Z"},"containers":{"cna":{"title":"gtp: pull network headers in gtp_dev_xmit()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ngtp: pull network headers in gtp_dev_xmit()\n\nsyzbot/KMSAN reported use of uninit-value in get_dev_xmit() [1]\n\nWe must make sure the IPv4 or Ipv6 header is pulled in skb->head\nbefore accessing fields in them.\n\nUse pskb_inet_may_pull() to fix this issue.\n\n[1]\nBUG: KMSAN: uninit-value in ipv6_pdp_find drivers/net/gtp.c:220 [inline]\n BUG: KMSAN: uninit-value in gtp_build_skb_ip6 drivers/net/gtp.c:1229 [inline]\n BUG: KMSAN: uninit-value in gtp_dev_xmit+0x1424/0x2540 drivers/net/gtp.c:1281\n  ipv6_pdp_find drivers/net/gtp.c:220 [inline]\n  gtp_build_skb_ip6 drivers/net/gtp.c:1229 [inline]\n  gtp_dev_xmit+0x1424/0x2540 drivers/net/gtp.c:1281\n  __netdev_start_xmit include/linux/netdevice.h:4913 [inline]\n  netdev_start_xmit include/linux/netdevice.h:4922 [inline]\n  xmit_one net/core/dev.c:3580 [inline]\n  dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3596\n  __dev_queue_xmit+0x358c/0x5610 net/core/dev.c:4423\n  dev_queue_xmit include/linux/netdevice.h:3105 [inline]\n  packet_xmit+0x9c/0x6c0 net/packet/af_packet.c:276\n  packet_snd net/packet/af_packet.c:3145 [inline]\n  packet_sendmsg+0x90e3/0xa3a0 net/packet/af_packet.c:3177\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:2204\n  __do_sys_sendto net/socket.c:2216 [inline]\n  __se_sys_sendto net/socket.c:2212 [inline]\n  __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212\n  x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was created at:\n  slab_post_alloc_hook mm/slub.c:3994 [inline]\n  slab_alloc_node mm/slub.c:4037 [inline]\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4080\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:583\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:674\n  alloc_skb include/linux/skbuff.h:1320 [inline]\n  alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6526\n  sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2815\n  packet_alloc_skb net/packet/af_packet.c:2994 [inline]\n  packet_snd net/packet/af_packet.c:3088 [inline]\n  packet_sendmsg+0x749c/0xa3a0 net/packet/af_packet.c:3177\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:2204\n  __do_sys_sendto net/socket.c:2216 [inline]\n  __se_sys_sendto net/socket.c:2212 [inline]\n  __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212\n  x64_sys_call+0x3799/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:45\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nCPU: 0 UID: 0 PID: 7115 Comm: syz.1.515 Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"3d89d0c4a1c6d4d2a755e826351b0a101dbc86f3","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"f5dda8db382c5751c4e572afc7c99df7da1f83ca","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"cbb9a969fc190e85195d1b0f08038e7f6199044e","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"1f6b62392453d8f36685d19b761307a8c5617ac1","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"137d565ab89ce3584503b443bc9e00d44f482593","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"34ba4f29f3d9eb52dee37512059efb2afd7e966f","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"3939d787139e359b77aaf9485d1e145d6713d7b9","versionType":"git"},{"version":"459aa660eb1d8ce67080da1983bb81d716aa5a69","status":"affected","lessThan":"3a3be7ff9224f424e485287b54be00d2c6bd9c40","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/gtp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.7","versionType":"semver"},{"version":"4.19.321","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.283","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.225","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.166","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.107","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.48","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.10.7","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/gtp.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3d89d0c4a1c6d4d2a755e826351b0a101dbc86f3"},{"url":"https://git.kernel.org/stable/c/f5dda8db382c5751c4e572afc7c99df7da1f83ca"},{"url":"https://git.kernel.org/stable/c/cbb9a969fc190e85195d1b0f08038e7f6199044e"},{"url":"https://git.kernel.org/stable/c/1f6b62392453d8f36685d19b761307a8c5617ac1"},{"url":"https://git.kernel.org/stable/c/137d565ab89ce3584503b443bc9e00d44f482593"},{"url":"https://git.kernel.org/stable/c/34ba4f29f3d9eb52dee37512059efb2afd7e966f"},{"url":"https://git.kernel.org/stable/c/3939d787139e359b77aaf9485d1e145d6713d7b9"},{"url":"https://git.kernel.org/stable/c/3a3be7ff9224f424e485287b54be00d2c6bd9c40"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:33:30.215Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"4.19.321"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.4.283"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.10.225"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.15.166"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.1.107"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.6.48"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.10.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.11"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-04T20:18:58.731411Z","id":"CVE-2024-44999","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-04T20:19:12.864Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"url":"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T22:14:57.080Z"}}]}}}