High

bonding: 3ad: implement proper RCU rules for port->aggregator

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: bonding: 3ad: implement proper RCU rules for port->aggregator syzbot found a data-race in bond_3ad_get_active_agg_info / bond_3ad_state_machine_handler [1] which hints at lack of proper RCU implementation. Add __rcu qualifier to port->aggregator, and add proper RCU API. [1] BUG: KCSAN: data-race in bond_3ad_get_active_agg_info / bond_3ad_state_machine_handler write to 0xffff88813cf5c4b0 of 8 bytes by task 36 on cpu 0: ad_port_selection_logic drivers/net/bonding/bond_3ad.c:1659 [inline] bond_3ad_state_machine_handler+0x9d5/0x2d60 drivers/net/bonding/bond_3ad.c:2569 process_one_work kernel/workqueue.c:3302 [inline] process_scheduled_works+0x4f0/0x9c0 kernel/workqueue.c:3385 worker_thread+0x58a/0x780 kernel/workqueue.c:3466 kthread+0x22a/0x280 kernel/kthread.c:436 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read to 0xffff88813cf5c4b0 of 8 bytes by task 22063 on cpu 1: __bond_3ad_get_active_agg_info drivers/net/bonding/bond_3ad.c:2858 [inline] bond_3ad_get_active_agg_info+0x8c/0x230 drivers/net/bonding/bond_3ad.c:2881 bond_fill_info+0xe0f/0x10f0 drivers/net/bonding/bond_netlink.c:853 rtnl_link_info_fill net/core/rtnetlink.c:906 [inline] rtnl_link_fill+0x1d7/0x4e0 net/core/rtnetlink.c:927 rtnl_fill_ifinfo+0xf8e/0x1380 net/core/rtnetlink.c:2168 rtmsg_ifinfo_build_skb+0x11c/0x1b0 net/core/rtnetlink.c:4453 rtmsg_ifinfo_event net/core/rtnetlink.c:44

Announced 24 Jun 2026Group revision 1

Original source ↗

CVE-2026-52975

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-2026-52975

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": "47e91f56008b43e1365e8d1d4a6813fe8a33b6f6",
        "lessThan": "ba2272be04f0cb1e74e1e355ff32ef95df280731",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "47e91f56008b43e1365e8d1d4a6813fe8a33b6f6",
        "lessThan": "3b7265b3a82f40d2357c4004b26eb794a095b186",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "47e91f56008b43e1365e8d1d4a6813fe8a33b6f6",
        "lessThan": "5fb9ea4e8ebf514d92df2b6c9d0db25ba02ac735",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "47e91f56008b43e1365e8d1d4a6813fe8a33b6f6",
        "lessThan": "c169c5837525ad842df6a542facf52b6f866a519",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "47e91f56008b43e1365e8d1d4a6813fe8a33b6f6",
        "lessThan": "78f409fd34fe9de2b24ad8e9dca1b4608a48ed3d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "47e91f56008b43e1365e8d1d4a6813fe8a33b6f6",
        "lessThan": "c4f050ce06c56cfb5993268af4a5cb66ed1cd04e",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/bonding/bond_3ad.c",
      "drivers/net/bonding/bond_main.c",
      "drivers/net/bonding/bond_netlink.c",
      "drivers/net/bonding/bond_procfs.c",
      "drivers/net/bonding/bond_sysfs_slave.c",
      "include/net/bond_3ad.h"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.13"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.13",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.1.175",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.141",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.95",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.33",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.10",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/bonding/bond_3ad.c",
      "drivers/net/bonding/bond_main.c",
      "drivers/net/bonding/bond_netlink.c",
      "drivers/net/bonding/bond_procfs.c",
      "drivers/net/bonding/bond_sysfs_slave.c",
      "include/net/bond_3ad.h"
    ],
    "defaultStatus": "affected"
  }
]

Related CVEs: CVE-2026-52975
Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event: #40720 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 11:07:38 GMT
Publisher date: Wed, 24 Jun 2026 16:28:52 GMT

Read the original announcement

Revision history

25 Oct 2026CVE-2026-52975 · Revision 1Source updated