CVE-2026-64116ipv6: ioam: add NULL check for idev in ipv6_hop_ioam()
- 7.5HighCVSS base score
- 0.51%Exploitation in 30 daysEPSS · top 56% 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: ipv6: ioam: add NULL check for idev in ipv6_hop_ioam() Reported by Sashiko: The function ipv6_hop_ioam() accesses __in6_dev_get(skb->dev)->cnf.ioam6_enabled without validating the returned idev pointer. Because addrconf_ifdown() can concurrently clear dev->ip6_ptr via RCU, __in6_dev_get() can return NULL during interface teardown, which could cause a NULL pointer dereference when processing an IOAM Hop-by-Hop option. Let's add a check and use SKB_DROP_REASON_IPV6DISABLED accordingly.
Timeline
ID reserved
By Linux
Published
- 17 days later
· 17 days 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.51% · top 56% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – < c7e8971abd70e9d022f1c251ba2508f8dc7f2db8
- affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – < 09cbfd4b81ae90963dadb1de99b63b702e73290a
- affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – < 1dca7e491f070ac49b3d934f16ee953a53b37f38
- affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – < 902daac307eb7e1955ce05b071950f3cba88c963
- affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – < abdd03229414b5a52943b65a60f34b84cea5ac59
- affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – < cf75eb6617042c8cff6112daeed7791809fc9dd2
- affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – < d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9
- affected 5.15
- unaffected < 5.15
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.176 – ≤ 6.1.*
- unaffected 6.6.143 – ≤ 6.6.*
- unaffected 6.12.92 – ≤ 6.12.*
- unaffected 6.18.34 – ≤ 6.18.*
- unaffected 7.0.11 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References7
- https://git.kernel.org/stable/c/c7e8971abd70e9d022f1c251ba2508f8dc7f2db8 (opens in a new tab)
- https://git.kernel.org/stable/c/09cbfd4b81ae90963dadb1de99b63b702e73290a (opens in a new tab)
- https://git.kernel.org/stable/c/1dca7e491f070ac49b3d934f16ee953a53b37f38 (opens in a new tab)
- https://git.kernel.org/stable/c/902daac307eb7e1955ce05b071950f3cba88c963 (opens in a new tab)
- https://git.kernel.org/stable/c/abdd03229414b5a52943b65a60f34b84cea5ac59 (opens in a new tab)
- https://git.kernel.org/stable/c/cf75eb6617042c8cff6112daeed7791809fc9dd2 (opens in a new tab)
- https://git.kernel.org/stable/c/d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9 (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-2026-45801 (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)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64116)Record last updated .