CVE-2026-68336
Estado: RecibidaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
bonding: fix devconf_all NULL dereference when IPv6 is disabled
When booting with the 'ipv6.disable=1' parameter, the devconf_all is never initialized because inet6_init() exits before addrconf_init() is called which initializes it. bond_send_validate(), however, will still call bond_ns_send_all() even ipv6 is indeed disabled. It will lead to NULL derefence of net->ipv6.devconf_all in ip6_pol_route().
Fix this by adding ipv6_mod_enabled() condition check in the caller.
Detalles técnicos trazas, registros y código del informe original
BUG: kernel NULL pointer dereference, address: 000000000000000c [...] Workqueue: bond0 bond_arp_monitor [bonding] RIP: 0010:ip6_pol_route+0x69/0x480 [...] Call Trace: <TASK> ? srso_return_thunk+0x5/0x5f ? __pfx_ip6_pol_route_output+0x10/0x10 fib6_rule_lookup+0xfe/0x260 ? wakeup_preempt+0x8a/0x90 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? sched_balance_rq+0x369/0x810 ip6_route_output_flags+0xd7/0x170 bond_ns_send_all+0xde/0x280 [bonding] bond_ab_arp_probe+0x296/0x320 [bonding] ? srso_return_thunk+0x5/0x5f bond_activebackup_arp_mon+0xb4/0x2c0 [bonding] process_one_work+0x196/0x370 worker_thread+0x1af/0x320 ? srso_return_thunk+0x5/0x5f ? __pfx_worker_thread+0x10/0x10 kthread+0xe3/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x199/0x260 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK>
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.21%
- Percentil entre todas las CVEs puntuadas: 11
- 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)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/1c975de3343cdef506f2eecc833cc1f14b0401c4
- https://git.kernel.org/stable/c/2a4bad24ac5296b262ad821aa5e08bb265e6b154
- https://git.kernel.org/stable/c/451c2d5422a309393aa8ae161fc1a527c2f19ab2
- https://git.kernel.org/stable/c/690ce66782778e8c4b1fdd79c0b0890a100e9522
- https://git.kernel.org/stable/c/738039ad21e20ca2c5bbde2f5a4f5ad5fb718038
- https://git.kernel.org/stable/c/992dce02bdabbd9883255ea9b36494e34a7821d7
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-68336",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4e24be018eb9dbcefa4b01c07e298b147dc1a4d7",
"lessThan": "451c2d5422a309393aa8ae161fc1a527c2f19ab2",
"versionType": "git"
},
{
"status": "affected",
"version": "4e24be018eb9dbcefa4b01c07e298b147dc1a4d7",
"lessThan": "2a4bad24ac5296b262ad821aa5e08bb265e6b154",
"versionType": "git"
},
{
"status": "affected",
"version": "4e24be018eb9dbcefa4b01c07e298b147dc1a4d7",
"lessThan": "690ce66782778e8c4b1fdd79c0b0890a100e9522",
"versionType": "git"
},
{
"status": "affected",
"version": "4e24be018eb9dbcefa4b01c07e298b147dc1a4d7",
"lessThan": "992dce02bdabbd9883255ea9b36494e34a7821d7",
"versionType": "git"
},
{
"status": "affected",
"version": "4e24be018eb9dbcefa4b01c07e298b147dc1a4d7",
"lessThan": "738039ad21e20ca2c5bbde2f5a4f5ad5fb718038",
"versionType": "git"
},
{
"status": "affected",
"version": "4e24be018eb9dbcefa4b01c07e298b147dc1a4d7",
"lessThan": "1c975de3343cdef506f2eecc833cc1f14b0401c4",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/bonding/bond_main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/bonding/bond_main.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-08-10T13:20:23.990",
"references": [
{
"url": "https://git.kernel.org/stable/c/1c975de3343cdef506f2eecc833cc1f14b0401c4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/2a4bad24ac5296b262ad821aa5e08bb265e6b154",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/451c2d5422a309393aa8ae161fc1a527c2f19ab2",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/690ce66782778e8c4b1fdd79c0b0890a100e9522",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/738039ad21e20ca2c5bbde2f5a4f5ad5fb718038",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/992dce02bdabbd9883255ea9b36494e34a7821d7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: fix devconf_all NULL dereference when IPv6 is disabled\n\nWhen booting with the 'ipv6.disable=1' parameter, the devconf_all is\nnever initialized because inet6_init() exits before addrconf_init() is\ncalled which initializes it. bond_send_validate(), however, will still\ncall bond_ns_send_all() even ipv6 is indeed disabled. It will lead to\nNULL derefence of net->ipv6.devconf_all in ip6_pol_route().\n\n BUG: kernel NULL pointer dereference, address: 000000000000000c\n [...]\n Workqueue: bond0 bond_arp_monitor [bonding]\n RIP: 0010:ip6_pol_route+0x69/0x480\n [...]\n Call Trace:\n <TASK>\n ? srso_return_thunk+0x5/0x5f\n ? __pfx_ip6_pol_route_output+0x10/0x10\n fib6_rule_lookup+0xfe/0x260\n ? wakeup_preempt+0x8a/0x90\n ? srso_return_thunk+0x5/0x5f\n ? srso_return_thunk+0x5/0x5f\n ? sched_balance_rq+0x369/0x810\n ip6_route_output_flags+0xd7/0x170\n bond_ns_send_all+0xde/0x280 [bonding]\n bond_ab_arp_probe+0x296/0x320 [bonding]\n ? srso_return_thunk+0x5/0x5f\n bond_activebackup_arp_mon+0xb4/0x2c0 [bonding]\n process_one_work+0x196/0x370\n worker_thread+0x1af/0x320\n ? srso_return_thunk+0x5/0x5f\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe3/0x120\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x199/0x260\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nFix this by adding ipv6_mod_enabled() condition check in the caller."
}
],
"lastModified": "2026-08-19T17:20:43.663",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}