CVE-2026-98074
In the Linux kernel, the following vulnerability has been resolved:
bonding: do not clear curr_active_slave prematurely when releasing all slaves
When releasing all slaves during bond destruction (all == true), __bond_release_one() unconditionally clears bond->curr_active_slave to NULL in every iteration.
If a backup slave is released before the active slave, bond_alb_deinit_slave() triggers rlb_teach_disabled_mac_on_primary(), which increments the active slave dev promiscuity counter and sets bond_info->primary_is_promisc = 1.
Because bond->curr_active_slave was prematurely cleared to NULL when releasing the backup slave, the subsequent iteration releasing the active slave evaluates oldcurrent as NULL, so bond_change_active_slave(bond, NULL) is skipped.
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Consequently, bond_alb_handle_active_change() is never called to decrement the promiscuity counter, permanently leaking promiscuous mode on the physical device after bond teardown.
When oldcurrent == slave, bond_change_active_slave(bond, NULL) already sets bond->curr_active_slave to NULL. We only need to avoid selecting a new active slave when all == true. Replace the if (all) branch with if (!all && oldcurrent == slave).
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: 0.18%
- Percentil entre todas las CVEs puntuadas: 7
- 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/19ba7ecfade159b3702c78a360fd7d971e2b7109
- https://git.kernel.org/stable/c/384739c631aa6749356ba062d6b7c9a484a733f6
- https://git.kernel.org/stable/c/6d0ee411d5437f3d126ea6979acb83a8da29dc81
- https://git.kernel.org/stable/c/7b435c69a30b40efc642de98b9bfa95fcf2ad4f0
- https://git.kernel.org/stable/c/af602c7aa5fedc9be3043244017aef4f26c96b70
- https://git.kernel.org/stable/c/b1ded242135071769902778dbab081e3fc09730f
- https://git.kernel.org/stable/c/d6ef22e79c2be3612868daede0e9a84f05439d9e
- https://git.kernel.org/stable/c/e39b203ec9e73852098d41b26386172d51babeb9
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-98074",
"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": "0896341a44bf04bf6149d9307fe4686006f3eee1",
"lessThan": "b1ded242135071769902778dbab081e3fc09730f",
"versionType": "git"
},
{
"status": "affected",
"version": "0896341a44bf04bf6149d9307fe4686006f3eee1",
"lessThan": "e39b203ec9e73852098d41b26386172d51babeb9",
"versionType": "git"
},
{
"status": "affected",
"version": "0896341a44bf04bf6149d9307fe4686006f3eee1",
"lessThan": "384739c631aa6749356ba062d6b7c9a484a733f6",
"versionType": "git"
},
{
"status": "affected",
"version": "0896341a44bf04bf6149d9307fe4686006f3eee1",
"lessThan": "7b435c69a30b40efc642de98b9bfa95fcf2ad4f0",
"versionType": "git"
},
{
"status": "affected",
"version": "0896341a44bf04bf6149d9307fe4686006f3eee1",
"lessThan": "d6ef22e79c2be3612868daede0e9a84f05439d9e",
"versionType": "git"
},
{
"status": "affected",
"version": "0896341a44bf04bf6149d9307fe4686006f3eee1",
"lessThan": "19ba7ecfade159b3702c78a360fd7d971e2b7109",
"versionType": "git"
},
{
"status": "affected",
"version": "0896341a44bf04bf6149d9307fe4686006f3eee1",
"lessThan": "6d0ee411d5437f3d126ea6979acb83a8da29dc81",
"versionType": "git"
},
{
"status": "affected",
"version": "0896341a44bf04bf6149d9307fe4686006f3eee1",
"lessThan": "af602c7aa5fedc9be3043244017aef4f26c96b70",
"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": "3.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3-rc2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/bonding/bond_main.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-25T11:17:36.730",
"references": [
{
"url": "https://git.kernel.org/stable/c/19ba7ecfade159b3702c78a360fd7d971e2b7109",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/384739c631aa6749356ba062d6b7c9a484a733f6",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6d0ee411d5437f3d126ea6979acb83a8da29dc81",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7b435c69a30b40efc642de98b9bfa95fcf2ad4f0",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/af602c7aa5fedc9be3043244017aef4f26c96b70",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b1ded242135071769902778dbab081e3fc09730f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d6ef22e79c2be3612868daede0e9a84f05439d9e",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/e39b203ec9e73852098d41b26386172d51babeb9",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Undergoing Analysis",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: do not clear curr_active_slave prematurely when releasing all slaves\n\nWhen releasing all slaves during bond destruction (all == true),\n__bond_release_one() unconditionally clears bond->curr_active_slave to\nNULL in every iteration.\n\nIf a backup slave is released before the active slave,\nbond_alb_deinit_slave() triggers rlb_teach_disabled_mac_on_primary(),\nwhich increments the active slave dev promiscuity counter and sets\nbond_info->primary_is_promisc = 1.\n\nBecause bond->curr_active_slave was prematurely cleared to NULL when\nreleasing the backup slave, the subsequent iteration releasing the active\nslave evaluates oldcurrent as NULL, so bond_change_active_slave(bond, NULL)\nis skipped. Consequently, bond_alb_handle_active_change() is never called\nto decrement the promiscuity counter, permanently leaking promiscuous\nmode on the physical device after bond teardown.\n\nWhen oldcurrent == slave, bond_change_active_slave(bond, NULL) already sets\nbond->curr_active_slave to NULL. We only need to avoid selecting a new\nactive slave when all == true. Replace the if (all) branch with\nif (!all && oldcurrent == slave)."
}
],
"lastModified": "2026-10-03T11:18:28.717",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}