CVE-2026-46300 is actively exploited: 1 mirrored artifact affected

Published 2026-11-02 · Updated 2026-11-04 09:03 UTC

Summary

CVE-2026-46300 is listed as actively exploited by ENISA EUVD (since 2026-10-28). Eurtifact's latest scans find it in 1 version of 1 mirrored component.

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: preserve shared-frag marker during coalescing skb_try_coalesce() can attach paged frags from @from to @to. If @from has SKBFL_SHARED_FRAG set, the resulting @to skb can contain the same externally-owned or page-cache-backed frags, but the shared-frag marker is currently lost. That breaks the invariant relied on by later in-place writers. In particular, ESP input checks skb_has_shared_frag() before deciding whether an uncloned nonlinear skb can skip skb_cow_data(). If TCP receive coalescing has moved shared frags into an unmarked skb, ESP can see skb_has_shared_frag() as false and decrypt in place over page-cache backed frags. Propagate SKBFL_SHARED_FRAG when skb_try_coalesce() transfers paged frags. The tailroom copy path does not need the marker because it copies bytes into @to's linear data rather than transferring frag descriptors.

EPSS: 0.1613 (97th percentile), scored 2026-11-03
CVSS (highest reported): 7.8

Sources

ENISA EU Vulnerability Database (exploited) (EUVD-2026-31535), added 2026-10-28. Linux.

Affected mirrored artifacts

Artifact	Type	Version	Package	Installed	Fixed	Severity
docker.io/library/node	image	20.19.3	linux-libc-dev	6.1.140-1	6.1.174-1	High

Fixed versions

linux-libc-dev: 6.1.174-1

Cyber Resilience Act, Article 14

Since 11 September 2026, manufacturers in scope of the Cyber Resilience Act must notify an actively exploited vulnerability in their product under Article 14: an early warning within 24 hours of becoming aware, a notification within 72 hours, and a final report within 14 days of a corrective measure being available. Assess whether this finding affects a product you place on the EU market; a CVE in a component is not automatically an exploitable vulnerability in your product.

Data as of 2026-11-04 09:03 UTC. Versions are those in Eurtifact's shared mirror catalogue; findings come from the latest completed scan of each version.

Eurtifact records when a component entered a build, who approved it and which releases carry it — for the images and Maven packages it mirrors. How this relates to the CRA