CVE-2026-23119
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
bonding: provide a net pointer to __skb_flow_dissect()
After 3cbf4ffba5ee ("net: plumb network namespace into __skb_flow_dissect") we have to provide a net pointer to __skb_flow_dissect(), either via skb->dev, skb->sk, or a user provided pointer.
In the following case, syzbot was able to cook a bare skb.
Detalles técnicos trazas, registros y código del informe original
WARNING: net/core/flow_dissector.c:1131 at __skb_flow_dissect+0xb57/0x68b0 net/core/flow_dissector.c:1131, CPU#1: syz.2.1418/11053 Call Trace: <TASK> bond_flow_dissect drivers/net/bonding/bond_main.c:4093 [inline] __bond_xmit_hash+0x2d7/0xba0 drivers/net/bonding/bond_main.c:4157 bond_xmit_hash_xdp drivers/net/bonding/bond_main.c:4208 [inline] bond_xdp_xmit_3ad_xor_slave_get drivers/net/bonding/bond_main.c:5139 [inline] bond_xdp_get_xmit_slave+0x1fd/0x710 drivers/net/bonding/bond_main.c:5515 xdp_master_redirect+0x13f/0x2c0 net/core/filter.c:4388 bpf_prog_run_xdp include/net/xdp.h:700 [inline] bpf_test_run+0x6b2/0x7d0 net/bpf/test_run.c:421 bpf_prog_test_run_xdp+0x795/0x10e0 net/bpf/test_run.c:1390 bpf_prog_test_run+0x2c7/0x340 kernel/bpf/syscall.c:4703 __sys_bpf+0x562/0x860 kernel/bpf/syscall.c:6182 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline] __se_sys_bpf kernel/bpf/syscall.c:6272 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.12%
- Percentil entre todas las CVEs puntuadas: 2
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/0efee0b992f28bd5ee01c7a86ef6a307c42eb907
- https://git.kernel.org/stable/c/3be945abdd228fd00f6afcf8d137002867a4651b
- https://git.kernel.org/stable/c/5f9b329096596b7e53e07d041d7fca4cbe1be752
- https://git.kernel.org/stable/c/8e53780732ee881394406f79da5263b81eb48f7e
- https://git.kernel.org/stable/c/bc3c8d2493c6f4d2038844dc8b7ee93de050f7fa
- https://git.kernel.org/stable/c/de97735a40a144974bf3896ee4cc0270db2e47db
- https://git.kernel.org/stable/c/f4faaa1297ecf3255a8591fff2633df05bd5ec84
JSON original (NVD)
Mostrar
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"timestamp": "2026-06-10T20:40:46.406465Z"
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"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: provide a net pointer to __skb_flow_dissect()\n\nAfter 3cbf4ffba5ee (\"net: plumb network namespace into __skb_flow_dissect\")\nwe have to provide a net pointer to __skb_flow_dissect(),\neither via skb->dev, skb->sk, or a user provided pointer.\n\nIn the following case, syzbot was able to cook a bare skb.\n\nWARNING: net/core/flow_dissector.c:1131 at __skb_flow_dissect+0xb57/0x68b0 net/core/flow_dissector.c:1131, CPU#1: syz.2.1418/11053\nCall Trace:\n <TASK>\n bond_flow_dissect drivers/net/bonding/bond_main.c:4093 [inline]\n __bond_xmit_hash+0x2d7/0xba0 drivers/net/bonding/bond_main.c:4157\n bond_xmit_hash_xdp drivers/net/bonding/bond_main.c:4208 [inline]\n bond_xdp_xmit_3ad_xor_slave_get drivers/net/bonding/bond_main.c:5139 [inline]\n bond_xdp_get_xmit_slave+0x1fd/0x710 drivers/net/bonding/bond_main.c:5515\n xdp_master_redirect+0x13f/0x2c0 net/core/filter.c:4388\n bpf_prog_run_xdp include/net/xdp.h:700 [inline]\n bpf_test_run+0x6b2/0x7d0 net/bpf/test_run.c:421\n bpf_prog_test_run_xdp+0x795/0x10e0 net/bpf/test_run.c:1390\n bpf_prog_test_run+0x2c7/0x340 kernel/bpf/syscall.c:4703\n __sys_bpf+0x562/0x860 kernel/bpf/syscall.c:6182\n __do_sys_bpf kernel/bpf/syscall.c:6274 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:6272 [inline]\n __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94"
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbonding: proporcionar un puntero de red a __skb_flow_dissect()\n\nDespués de 3cbf4ffba5ee ('net: integrar el espacio de nombres de red en __skb_flow_dissect')\ntenemos que proporcionar un puntero de red a __skb_flow_dissect(),\nya sea a través de skb->dev, skb->sk, o un puntero proporcionado por el usuario.\n\nEn el siguiente caso, syzbot pudo 'cocinar' un skb básico.\n\nADVERTENCIA: net/core/flow_dissector.c:1131 en __skb_flow_dissect+0xb57/0x68b0 net/core/flow_dissector.c:1131, CPU#1: syz.2.1418/11053\nTraza de Llamadas:\n \n bond_flow_dissect drivers/net/bonding/bond_main.c:4093 [en línea]\n __bond_xmit_hash+0x2d7/0xba0 drivers/net/bonding/bond_main.c:4157\n bond_xmit_hash_xdp drivers/net/bonding/bond_main.c:4208 [en línea]\n bond_xdp_xmit_3ad_xor_slave_get drivers/net/bonding/bond_main.c:5139 [en línea]\n bond_xdp_get_xmit_slave+0x1fd/0x710 drivers/net/bonding/bond_main.c:5515\n xdp_master_redirect+0x13f/0x2c0 net/core/filter.c:4388\n bpf_prog_run_xdp include/net/xdp.h:700 [en línea]\n bpf_test_run+0x6b2/0x7d0 net/bpf/test_run.c:421\n bpf_prog_test_run_xdp+0x795/0x10e0 net/bpf/test_run.c:1390\n bpf_prog_test_run+0x2c7/0x340 kernel/bpf/syscall.c:4703\n __sys_bpf+0x562/0x860 kernel/bpf/syscall.c:6182\n __do_sys_bpf kernel/bpf/syscall.c:6274 [en línea]\n __se_sys_bpf kernel/bpf/syscall.c:6272 [en línea]\n __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [en línea]\n do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94"
}
],
"lastModified": "2026-06-17T10:20:55.910",
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