CVE-2024-56636

{"id": "CVE-2024-56636", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-12-27T15:15:23.320", "references": [{"url": "https://git.kernel.org/stable/c/177b72ed7c77b11e46dd4336d73a87a77a5603af", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2ee7bdc7cb40abfe658a71fbd10c7db2f4fc4f9a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8588c99c7d47448fcae39e3227d6e2bb97aad86d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/97ce3a4ec55eac6b5e2949ffb04028d604afda3b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b65958284401016b983078c68f70b047537f4aba", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d9fa09ca004befe9cf826d6820439cb6f93cecd7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngeneve: do not assume mac header is set in geneve_xmit_skb()\n\nWe should not assume mac header is set in output path.\n\nUse skb_eth_hdr() instead of eth_hdr() to fix the issue.\n\nsysbot reported the following :\n\n WARNING: CPU: 0 PID: 11635 at include/linux/skbuff.h:3052 skb_mac_header include/linux/skbuff.h:3052 [inline]\n WARNING: CPU: 0 PID: 11635 at include/linux/skbuff.h:3052 eth_hdr include/linux/if_ether.h:24 [inline]\n WARNING: CPU: 0 PID: 11635 at include/linux/skbuff.h:3052 geneve_xmit_skb drivers/net/geneve.c:898 [inline]\n WARNING: CPU: 0 PID: 11635 at include/linux/skbuff.h:3052 geneve_xmit+0x4c38/0x5730 drivers/net/geneve.c:1039\nModules linked in:\nCPU: 0 UID: 0 PID: 11635 Comm: syz.4.1423 Not tainted 6.12.0-syzkaller-10296-gaaf20f870da0 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\n RIP: 0010:skb_mac_header include/linux/skbuff.h:3052 [inline]\n RIP: 0010:eth_hdr include/linux/if_ether.h:24 [inline]\n RIP: 0010:geneve_xmit_skb drivers/net/geneve.c:898 [inline]\n RIP: 0010:geneve_xmit+0x4c38/0x5730 drivers/net/geneve.c:1039\nCode: 21 c6 02 e9 35 d4 ff ff e8 a5 48 4c fb 90 0f 0b 90 e9 fd f5 ff ff e8 97 48 4c fb 90 0f 0b 90 e9 d8 f5 ff ff e8 89 48 4c fb 90 <0f> 0b 90 e9 41 e4 ff ff e8 7b 48 4c fb 90 0f 0b 90 e9 cd e7 ff ff\nRSP: 0018:ffffc90003b2f870 EFLAGS: 00010283\nRAX: 000000000000037a RBX: 000000000000ffff RCX: ffffc9000dc3d000\nRDX: 0000000000080000 RSI: ffffffff86428417 RDI: 0000000000000003\nRBP: ffffc90003b2f9f0 R08: 0000000000000003 R09: 000000000000ffff\nR10: 000000000000ffff R11: 0000000000000002 R12: ffff88806603c000\nR13: 0000000000000000 R14: ffff8880685b2780 R15: 0000000000000e23\nFS: 00007fdc2deed6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000001b30a1dff8 CR3: 0000000056b8c000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n __netdev_start_xmit include/linux/netdevice.h:5002 [inline]\n netdev_start_xmit include/linux/netdevice.h:5011 [inline]\n __dev_direct_xmit+0x58a/0x720 net/core/dev.c:4490\n dev_direct_xmit include/linux/netdevice.h:3181 [inline]\n packet_xmit+0x1e4/0x360 net/packet/af_packet.c:285\n packet_snd net/packet/af_packet.c:3146 [inline]\n packet_sendmsg+0x2700/0x5660 net/packet/af_packet.c:3178\n sock_sendmsg_nosec net/socket.c:711 [inline]\n __sock_sendmsg net/socket.c:726 [inline]\n __sys_sendto+0x488/0x4f0 net/socket.c:2197\n __do_sys_sendto net/socket.c:2204 [inline]\n __se_sys_sendto net/socket.c:2200 [inline]\n __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2200\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: geneve: no suponga que el encabezado mac est\u00e1 configurado en geneve_xmit_skb() No debemos asumir que el encabezado mac est\u00e1 configurado en la ruta de salida. Utilice skb_eth_hdr() en lugar de eth_hdr() para solucionar el problema. sysbot inform\u00f3 lo siguiente: ADVERTENCIA: CPU: 0 PID: 11635 en include/linux/skbuff.h:3052 skb_mac_header include/linux/skbuff.h:3052 [en l\u00ednea] ADVERTENCIA: CPU: 0 PID: 11635 en include/linux/skbuff.h:3052 eth_hdr include/linux/if_ether.h:24 [en l\u00ednea] ADVERTENCIA: CPU: 0 PID: 11635 en include/linux/skbuff.h:3052 geneve_xmit_skb drivers/net/geneve.c:898 [en l\u00ednea] ADVERTENCIA: CPU: 0 PID: 11635 en include/linux/skbuff.h:3052 geneve_xmit+0x4c38/0x5730 drivers/net/geneve.c:1039 M\u00f3dulos vinculados en: CPU: 0 UID: 0 PID: 11635 Comm: syz.4.1423 No contaminado 6.12.0-syzkaller-10296-gaaf20f870da0 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024 RIP: 0010:skb_mac_header include/linux/skbuff.h:3052 [en l\u00ednea] RIP: 0010:eth_hdr include/linux/if_ether.h:24 [en l\u00ednea] RIP: 0010:geneve_xmit_skb drivers/net/geneve.c:898 [en l\u00ednea] RIP: 0010:geneve_xmit+0x4c38/0x5730 drivers/net/geneve.c:1039 C\u00f3digo: 21 c6 02 e9 35 d4 ff ff e8 a5 48 4c fb 90 0f 0b 90 e9 fd f5 ff ff e8 97 48 4c fb 90 0f 0b 90 e9 d8 f5 ff ff e8 89 48 4c fb 90 &lt;0f&gt; 0b 90 e9 41 e4 ff ff e8 7b 48 4c fb 90 0f 0b 90 e9 cd e7 ff ff RSP: 0018:ffffc90003b2f870 EFLAGS: 00010283 RAX: 000000000000037a RBX: 000000000000ffff RCX: ffffc9000dc3d000 RDX: 0000000000080000 RSI: ffffffff86428417 RDI: 0000000000000003 RBP: ffffc90003b2f9f0 R08: 000000000000003 R09: 000000000000ffff R10: 000000000000ffff R11: 000000000000002 R12: ffff88806603c000 R13: 0000000000000000 R14: ffff8880685b2780 R15: 0000000000000e23 FS: 00007fdc2deed6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30a1dff8 CR3: 0000000056b8c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: __netdev_start_xmit include/linux/netdevice.h:5002 [en l\u00ednea] netdev_start_xmit include/linux/netdevice.h:5011 [en l\u00ednea] __dev_direct_xmit+0x58a/0x720 net/core/dev.c:4490 dev_direct_xmit include/linux/netdevice.h:3181 [en l\u00ednea] packet_xmit+0x1e4/0x360 net/packet/af_packet.c:285 packet_snd net/packet/af_packet.c:3146 [en l\u00ednea] packet_sendmsg+0x2700/0x5660 net/packet/af_packet.c:3178 sock_sendmsg_nosec net/socket.c:711 [en l\u00ednea] __sock_sendmsg net/socket.c:726 [en l\u00ednea] __sys_sendto+0x488/0x4f0 net/socket.c:2197 __do_sys_sendto net/socket.c:2204 [en l\u00ednea] __se_sys_sendto net/socket.c:2200 [en l\u00ednea] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] hacer_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entrada_SYSCALL_64_after_hwframe+0x77/0x7f"}], "lastModified": "2025-10-08T13:36:55.090", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E85981F8-CFCD-412D-8B84-C2EB7C53C28B", "versionEndExcluding": "5.10.231", "versionStartIncluding": "5.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "419FD073-1517-4FD5-8158-F94BC68A1E89", "versionEndExcluding": "5.15.174", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "09AC6122-E2A4-40FE-9D33-268A1B2EC265", "versionEndExcluding": "6.1.120", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "29A976AD-B9AB-4A95-9F08-7669F8847EB9", "versionEndExcluding": "6.6.66", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9501D045-7A94-42CA-8B03-821BE94A65B7", "versionEndExcluding": "6.12.5", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}