7.5

CVE-2026-64116: linux NULL Pointer Dereference

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-64116DEBIAN-CVE-2026-64116
Published 19-07-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-64116 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 25 · Related 25
USN-8593-1USN-8603-1USN-8618-1USN-8663-1USN-8664-1USN-8728-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

0.00 pp

From 0.51% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.51%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu155 products
  • linux< 5.15.0-198.208 | < 6.8.0-139.139 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1117.124 | < 6.8.0-1064.67 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0, < c7e8971abd70e9d022f1c251ba2508f8dc7f2db8 | ≥ 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0, < 09cbfd4b81ae90963dadb1de99b63b702e73290a | ≥ 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0, < 1dca7e491f070ac49b3d934f16ee953a53b37f38 | ≥ 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0, < 902daac307eb7e1955ce05b071950f3cba88c963 | ≥ 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0, < abdd03229414b5a52943b65a60f34b84cea5ac59 | ≥ 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0, < cf75eb6617042c8cff6112daeed7791809fc9dd2 | ≥ 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0, < d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9 | 5.15
  • linux_kernel≥ 5.15, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.92 | ≥ 6.13, < 6.18.34 | ≥ 6.19, < 7.0.11 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1

3 vendors · 158 products

References

36 links
Show all 36 references