{"api_version":"1","generated_at":"2026-05-13T16:29:01+00:00","cve":"CVE-2024-50035","urls":{"html":"https://cve.report/CVE-2024-50035","api":"https://cve.report/api/cve/CVE-2024-50035.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2024-50035","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-50035"},"summary":{"title":"ppp: fix ppp_async_encode() illegal access","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nppp: fix ppp_async_encode() illegal access\n\nsyzbot reported an issue in ppp_async_encode() [1]\n\nIn this case, pppoe_sendmsg() is called with a zero size.\nThen ppp_async_encode() is called with an empty skb.\n\nBUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\n BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\n  ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\n  ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\n  ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634\n  ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline]\n  ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\n  release_sock+0x6b/0x250 net/core/sock.c:3626\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\n  sock_sendmsg_nosec net/socket.c:729 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\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:4092 [inline]\n  slab_alloc_node mm/slub.c:4135 [inline]\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\n  alloc_skb include/linux/skbuff.h:1322 [inline]\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\n  sock_sendmsg_nosec net/socket.c:729 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\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: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024","state":"PUBLISHED","assigner":"Linux","published_at":"2024-10-21 20:15:16","updated_at":"2026-05-12 13:16:15"},"problem_types":["CWE-908"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/8dfe93901b410ae41264087427f3b9f389388f83","name":"https://git.kernel.org/stable/c/8dfe93901b410ae41264087427f3b9f389388f83","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/40dddd4b8bd08a69471efd96107a4e1c73fabefc","name":"https://git.kernel.org/stable/c/40dddd4b8bd08a69471efd96107a4e1c73fabefc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html","name":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fadf8fdb3110d3138e05c3765f645535434f8d76","name":"https://git.kernel.org/stable/c/fadf8fdb3110d3138e05c3765f645535434f8d76","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","name":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","refsource":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4151ec65abd755133ebec687218fadd2d2631167","name":"https://git.kernel.org/stable/c/4151ec65abd755133ebec687218fadd2d2631167","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ce249a4c68d0ce27a8c5d853338d502e2711a314","name":"https://git.kernel.org/stable/c/ce249a4c68d0ce27a8c5d853338d502e2711a314","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-355557.html","name":"https://cert-portal.siemens.com/productcert/html/ssa-355557.html","refsource":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8fe992ff3df493d1949922ca234419f3ede08dff","name":"https://git.kernel.org/stable/c/8fe992ff3df493d1949922ca234419f3ede08dff","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/30d91a478d58cbae3dbaa8224d17d0d839f0d71b","name":"https://git.kernel.org/stable/c/30d91a478d58cbae3dbaa8224d17d0d839f0d71b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","name":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c007a14797240607038bd3464501109f408940e2","name":"https://git.kernel.org/stable/c/c007a14797240607038bd3464501109f408940e2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-50035","name":"CVE 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the Linux kernel, the following vulnerability has been resolved:\n\nppp: fix ppp_async_encode() illegal access\n\nsyzbot reported an issue in ppp_async_encode() [1]\n\nIn this case, pppoe_sendmsg() is called with a zero size.\nThen ppp_async_encode() is called with an empty skb.\n\nBUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\n BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\n  ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\n  ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\n  ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634\n  ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline]\n  ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\n  release_sock+0x6b/0x250 net/core/sock.c:3626\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\n  sock_sendmsg_nosec net/socket.c:729 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\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:4092 [inline]\n  slab_alloc_node mm/slub.c:4135 [inline]\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\n  alloc_skb include/linux/skbuff.h:1322 [inline]\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\n  sock_sendmsg_nosec net/socket.c:729 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\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: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024"}],"providerMetadata":{"dateUpdated":"2026-05-11T20:44:14.079Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4151ec65abd755133ebec687218fadd2d2631167"},{"url":"https://git.kernel.org/stable/c/8dfe93901b410ae41264087427f3b9f389388f83"},{"url":"https://git.kernel.org/stable/c/30d91a478d58cbae3dbaa8224d17d0d839f0d71b"},{"url":"https://git.kernel.org/stable/c/fadf8fdb3110d3138e05c3765f645535434f8d76"},{"url":"https://git.kernel.org/stable/c/ce249a4c68d0ce27a8c5d853338d502e2711a314"},{"url":"https://git.kernel.org/stable/c/8fe992ff3df493d1949922ca234419f3ede08dff"},{"url":"https://git.kernel.org/stable/c/c007a14797240607038bd3464501109f408940e2"},{"url":"https://git.kernel.org/stable/c/40dddd4b8bd08a69471efd96107a4e1c73fabefc"}],"title":"ppp: fix ppp_async_encode() illegal access","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2024-50035","datePublished":"2024-10-21T19:39:36.460Z","dateReserved":"2024-10-21T12:17:06.070Z","dateUpdated":"2026-05-12T11:59:50.600Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2024-10-21 20:15:16","lastModifiedDate":"2026-05-12 13:16:15","problem_types":["CWE-908"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.2}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.227","matchCriteriaId":"E346E1F4-278B-4263-B0B8-7234D7CC31E4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.168","matchCriteriaId":"4D51C05D-455B-4D8D-89E7-A58E140B864C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.113","matchCriteriaId":"D01BD22E-ACD1-4618-9D01-6116570BE1EE"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.57","matchCriteriaId":"05D83DB8-7465-4F88-AFB2-980011992AC1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.11.4","matchCriteriaId":"AA84D336-CE9A-4535-B901-1AD77EC17C34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*","matchCriteriaId":"7F361E1D-580F-4A2D-A509-7615F73167A1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*","matchCriteriaId":"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2024","CveId":"50035","Ordinal":"1","Title":"ppp: fix ppp_async_encode() illegal access","CVE":"CVE-2024-50035","Year":"2024"},"notes":[{"CveYear":"2024","CveId":"50035","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nppp: fix ppp_async_encode() illegal access\n\nsyzbot reported an issue in ppp_async_encode() [1]\n\nIn this case, pppoe_sendmsg() is called with a zero size.\nThen ppp_async_encode() is called with an empty skb.\n\nBUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\n BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\n  ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]\n  ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675\n  ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634\n  ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline]\n  ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\n  release_sock+0x6b/0x250 net/core/sock.c:3626\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\n  sock_sendmsg_nosec net/socket.c:729 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\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:4092 [inline]\n  slab_alloc_node mm/slub.c:4135 [inline]\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\n  alloc_skb include/linux/skbuff.h:1322 [inline]\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\n  sock_sendmsg_nosec net/socket.c:729 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\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: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024","Type":"Description","Title":"ppp: fix ppp_async_encode() illegal access"}]}}}