CVE-2026-80646

ipv6: guard against possible NULL deref in __in6_dev_stats_get()

HIGH

7.5

CVSS Score

Published: August 28, 2026 at 06:48 AM UTC

Updated: October 16, 2026 at 08:18 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.5

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: guard against possible NULL deref in __in6_dev_stats_get() dev_get_by_index_rcu() could return NULL if the original physical device is unregistered. Found by Sashiko.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

90%

4.19.291 5.2a24963500a4ec921ce9c2597e0a584e44513afaee1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f

Vendor states this is fixed in 0db1949084e85a72d174a7dea3259b94fe5a9305 (fixed)

Vendor states this is fixed in 1a4adfbeb47a212a64539137411f1ca168474d33 (fixed)

Vendor states this is fixed in 1e3db30a88815bae6e9d5db6f64ac735e615a07e (fixed)

Vendor states this is fixed in 507541c2a8eeb76c02bd2511958f73a8cfa3e1bc (fixed)

Vendor states this is fixed in 952426a83ca75cea25c09d58944abafaa3ebd242 (fixed)

Vendor states this is fixed in a23f2c68c6635e41404f189f8f7ae910738cebdb (fixed)

Vendor states this is fixed in e14db43677946bf2095febd294bb3c13ab375ab7 (fixed)

Vendor states this is fixed in fc920c0659cdea5afd8721c1155a51564859e075 (fixed)

Affected range stops below 4.20, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 5.10.261 (unaffected)

Vendor states this is fixed in 5.15.212 (unaffected)

Vendor states this is fixed in 5.2 (unaffected)

Vendor states this is fixed in 6.1.178 (unaffected)

Vendor states this is fixed in 6.12.97 (unaffected)

Vendor states this is fixed in 6.18.40 (unaffected)

Vendor states this is fixed in 6.6.145 (unaffected)

Vendor states this is fixed in 7.1.5 (unaffected)

Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord

https://git.kernel.org/stable/c/a23f2c68c6635e41404f189f8f7ae910738cebdb

Source: cverecord

https://git.kernel.org/stable/c/e14db43677946bf2095febd294bb3c13ab375ab7

Source: cverecord

https://git.kernel.org/stable/c/1a4adfbeb47a212a64539137411f1ca168474d33

Source: cverecord

https://git.kernel.org/stable/c/1e3db30a88815bae6e9d5db6f64ac735e615a07e

Source: cverecord

https://git.kernel.org/stable/c/952426a83ca75cea25c09d58944abafaa3ebd242

Source: cverecord

https://git.kernel.org/stable/c/0db1949084e85a72d174a7dea3259b94fe5a9305

Source: cverecord

https://git.kernel.org/stable/c/fc920c0659cdea5afd8721c1155a51564859e075

Source: cverecord

https://git.kernel.org/stable/c/507541c2a8eeb76c02bd2511958f73a8cfa3e1bc

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHLinux

Vector?

Quick Info

StatusRECEIVED

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