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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-46323 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net: gro: don't merge zcopy skbs skb_gro_receive() can currently copy frags between the source and GRO skb, without checking the zerocopy status, and in particular the SKBFL_MANAGED_FRAG_REFS flag. When SKBFL_MANAGED_FRAG_REFS is set, the skb doesn't hold a reference on the pages in shinfo->frags. Appending those frags to another skb's frags without fixing up the page refcount can lead to UAF. When either the last skb in the GRO chain (the one we would append frags to) or the source skb is zerocopy, don't merge the skbs.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/1f9c828556416fbe3f49386708ce999fc4d4da06 kernel.org
https://git.kernel.org/stable/c/44bea2032af0425e4ce6d26a8af0ede79db49ec1 kernel.org
https://git.kernel.org/stable/c/479084ae0e1d9cb7929cb4298d35623de189f80a kernel.org
https://git.kernel.org/stable/c/4db79a322db8c97f7b73b8a347395ef4d685eb40 kernel.org
https://git.kernel.org/stable/c/e334cbf3388fd9334503a778a82d9e9f14dd2f71 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-46323
NVD Published Date:
06/09/2026
NVD Last Modified:
06/09/2026
Source:
kernel.org