CVE-2026-68336bonding: fix devconf_all NULL dereference when IPv6 is disabled
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 92% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 – < 451c2d5422a309393aa8ae161fc1a527c2f19ab2
- affected 4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 – < 2a4bad24ac5296b262ad821aa5e08bb265e6b154
- affected 4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 – < 690ce66782778e8c4b1fdd79c0b0890a100e9522
- affected 4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 – < 992dce02bdabbd9883255ea9b36494e34a7821d7
- affected 4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 – < 738039ad21e20ca2c5bbde2f5a4f5ad5fb718038
- affected 4e24be018eb9dbcefa4b01c07e298b147dc1a4d7 – < 1c975de3343cdef506f2eecc833cc1f14b0401c4
- affected 5.18
- unaffected < 5.18
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.148 – ≤ 6.6.*
- unaffected 6.12.101 – ≤ 6.12.*
- unaffected 6.18.42 – ≤ 6.18.*
- unaffected 7.1.6 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/451c2d5422a309393aa8ae161fc1a527c2f19ab2 (opens in a new tab)
- https://git.kernel.org/stable/c/2a4bad24ac5296b262ad821aa5e08bb265e6b154 (opens in a new tab)
- https://git.kernel.org/stable/c/690ce66782778e8c4b1fdd79c0b0890a100e9522 (opens in a new tab)
- https://git.kernel.org/stable/c/992dce02bdabbd9883255ea9b36494e34a7821d7 (opens in a new tab)
- https://git.kernel.org/stable/c/738039ad21e20ca2c5bbde2f5a4f5ad5fb718038 (opens in a new tab)
- https://git.kernel.org/stable/c/1c975de3343cdef506f2eecc833cc1f14b0401c4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-55437 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-68336)Record last updated .