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CVE-2026-98074— bonding: do not clear curr_active_slave prematurely when releasing all slaves

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已得到修复： 问题描述： 在销毁 bonding 接口（即执行销毁操作，参数 ）并释放所有从属设备（slaves）的过程中， 函数在每次迭代中都会无条件地将 置为 。 如果备份从属设备（backup slave）在活跃从属设备（active slave）之前被释放，则会触发 ，进而调用 。该函数会增加活跃从属设备网络设备（dev）的混杂模式（promiscuity）计数器，并设置 。 然而，由于在释放备份从属设备时， 已被过早地清空为 ，导致在后续释放活跃从属设备的迭代中， 被评估为

AI Predicted 5.9 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1562

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 0896341a44bf04bf6149d9307fe4686006f3eee1< b1ded242135071769902778dbab081e3fc09730f affected
0896341a44bf04bf6149d9307fe4686006f3eee1< e39b203ec9e73852098d41b26386172d51babeb9 affected
0896341a44bf04bf6149d9307fe4686006f3eee1< 384739c631aa6749356ba062d6b7c9a484a733f6 affected
0896341a44bf04bf6149d9307fe4686006f3eee1< 7b435c69a30b40efc642de98b9bfa95fcf2ad4f0 affected
0896341a44bf04bf6149d9307fe4686006f3eee1< d6ef22e79c2be3612868daede0e9a84f05439d9e affected
0896341a44bf04bf6149d9307fe4686006f3eee1< 19ba7ecfade159b3702c78a360fd7d971e2b7109 affected
0896341a44bf04bf6149d9307fe4686006f3eee1< 6d0ee411d5437f3d126ea6979acb83a8da29dc81 affected
0896341a44bf04bf6149d9307fe4686006f3eee1< af602c7aa5fedc9be3043244017aef4f26c96b70 affected
… +10 more rows
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I. Basic Information for CVE-2026-98074

Vulnerability Information
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Vulnerability Title
bonding: do not clear curr_active_slave prematurely when releasing all slaves
Source: CVE Program / CVE List V5
Vulnerability Description
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).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 0896341a44bf04bf6149d9307fe4686006f3eee1 ~ b1ded242135071769902778dbab081e3fc09730f -
Linux Linux 3.9 -

II. Public POCs for CVE-2026-98074

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III. Intelligence Information for CVE-2026-98074

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Patches & Fixes for CVE-2026-98074 (8)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-98002 7.8 HIGH iommu/amd: Fix ineffective error check in nested domain allocation
CVE-2026-97575 7.8 HIGH media: v4l2-ctrls: validate AV1 tile counts
CVE-2026-97576 7.8 HIGH media: v4l2-ctrls: validate HEVC tile counts
CVE-2026-97941 7.8 HIGH mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race
CVE-2026-98112 7.8 HIGH ksmbd: fix listener task lifetime on netdev events
CVE-2026-97937 7.8 HIGH ftrace: fork: Initialize function graph state before copy_exec_state()
CVE-2026-97580 7.8 HIGH media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
CVE-2026-97940 7.8 HIGH ipv6: fix fib6 walker UAF on seq stop

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98074

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