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Back to active CVEs
Unknown severity ยท Source severity not reportedCVE-2026-68336

bonding: fix devconf_all NULL dereference when IPv6 is disabledCVE-2026-68336

Answer in brief

CVE-2026-68336 records a Unknown severity vulnerability in bonding: fix devconf_all NULL dereference when IPv6 is disabled. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 10, 2026Updated Nov 6, 2026Source checked Nov 8, 2026First seen by HOL Aug 10, 2026Material review Nov 6, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 8, 2026
References
6 linked sources
Open source record

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <2a4bad24ac5296b262ad821aa5e08bb265e6b154 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <690ce66782778e8c4b1fdd79c0b0890a100e9522 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <992dce02bdabbd9883255ea9b36494e34a7821d7 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <738039ad21e20ca2c5bbde2f5a4f5ad5fb718038 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <1c975de3343cdef506f2eecc833cc1f14b0401c42a4bad24ac5296b262ad821aa5e08bb265e6b154, 690ce66782778e8c4b1fdd79c0b0890a100e9522, 992dce02bdabbd9883255ea9b36494e34a7821d7, 738039ad21e20ca2c5bbde2f5a4f5ad5fb718038, 1c975de3343cdef506f2eecc833cc1f14b0401c4
Linux/Linuxgeneric5.18Not reported
Linux/Linuxgeneric>=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <451c2d5422a309393aa8ae161fc1a527c2f19ab2 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <2a4bad24ac5296b262ad821aa5e08bb265e6b154 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <690ce66782778e8c4b1fdd79c0b0890a100e9522 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <992dce02bdabbd9883255ea9b36494e34a7821d7 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <738039ad21e20ca2c5bbde2f5a4f5ad5fb718038 || >=4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 <1c975de3343cdef506f2eecc833cc1f14b0401c4451c2d5422a309393aa8ae161fc1a527c2f19ab2, 2a4bad24ac5296b262ad821aa5e08bb265e6b154, 690ce66782778e8c4b1fdd79c0b0890a100e9522, 992dce02bdabbd9883255ea9b36494e34a7821d7, 738039ad21e20ca2c5bbde2f5a4f5ad5fb718038, 1c975de3343cdef506f2eecc833cc1f14b0401c4

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 2a4bad24ac5296b262ad821aa5e08bb265e6b154; Linux/Linux to 451c2d5422a309393aa8ae161fc1a527c2f19ab2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 10, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

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(). 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> Fix this by adding ipv6_mod_enabled() condition check in the caller.

Quoted source text, attributed separately from HOL analysis.