bonding: do not clear curr_active_slave prematurely when releasing all slaves
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. 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).
CVE-2026-98074
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98074
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"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",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/bonding/bond_main.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98074
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38183 · Revision 1
- Added to Heist Feed
- Publisher date