CVE-2026-46300 remediation guide

Linux Linux, NVIDIA for RHEL 10, Red Hat Enterprise Linux 10

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 frag...

Open CVE record

ProductLinux Linux, NVIDIA for RHEL 10, Red Hat Enterprise Linux 10

Affected versions>= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 3599e6b3cc1ada96883d496a50a210d3afbb6987, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 2f2b16022a2e10ca7bccfb98db5ed2ec0f72641c, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 9d3e5fd19fe1063bf607219e8562fbd567b8e8d5, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 78bf6b6bb19541d19fbda6242e7cfe2c682763c0, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 760e1addc27ba1a7beb4a0a7e8b3e9ec49e7a34e, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 3bd9e113d50034db99d7ef69fd8e5242d15e414a, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 3884358a9286b17f389a72b1426fc4547c23c111, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < f84eca5817390257cef78013d0112481c503b4a3, >= 3.9, >= V3.1.6, >= V3.1.5, >= 3.9 <= 5.10.257, >= 5.11 < 5.15.208, >= 5.16 < 6.1.174, >= 6.2 < 6.6.141, >= 6.7 < 6.12.91, >= 6.13 < 6.18.33, >= 6.19 < 7.0.10, 7.1

Fixed versions5.15.208, 6.1.174, 6.6.141, 6.12.91, 6.18.33, 7.0.10

Priority basisReview · CVSS 7.8 · EPSS 7.01%

Identify the affected asset

Confirm whether Linux Linux, NVIDIA for RHEL 10, Red Hat Enterprise Linux 10 is installed, record the deployed version and installation path, and identify exposed interfaces.

Record the product name, package or appliance identifier, and installed version.
Identify internet-facing, administrative, API, and internal access paths.
Preserve the pre-change configuration and relevant service logs.

Validate the affected-version match

Compare the deployed version with the affected range: >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 3599e6b3cc1ada96883d496a50a210d3afbb6987, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 2f2b16022a2e10ca7bccfb98db5ed2ec0f72641c, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 9d3e5fd19fe1063bf607219e8562fbd567b8e8d5, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 78bf6b6bb19541d19fbda6242e7cfe2c682763c0, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 760e1addc27ba1a7beb4a0a7e8b3e9ec49e7a34e, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 3bd9e113d50034db99d7ef69fd8e5242d15e414a, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < 3884358a9286b17f389a72b1426fc4547c23c111, >= cef401de7be8c4e155c6746bfccf721a4fa5fab9 < f84eca5817390257cef78013d0112481c503b4a3, >= 3.9, >= V3.1.6, >= V3.1.5, >= 3.9 <= 5.10.257, >= 5.11 < 5.15.208, >= 5.16 < 6.1.174, >= 6.2 < 6.6.141, >= 6.7 < 6.12.91, >= 6.13 < 6.18.33, >= 6.19 < 7.0.10, 7.1. Treat incomplete inventory results as unresolved.

Prioritize with independent signals

The CVSS severity warrants an early asset and exposure review. Combine this signal with asset criticality, exposure, compensating controls, and business impact.

Apply supported remediation

Follow the vendor advisory or supported update path. Current fixed-version status: 5.15.208, 6.1.174, 6.6.141, 6.12.91, 6.18.33, 7.0.10. Preserve configuration and rollback material before change.

Verify the result

Confirm the resulting version, service health, authentication and access paths, monitoring coverage, and relevant security logs.

Confirm the expected version and package state.
Run a functional health check for critical service paths.
Review authentication, error, application, and security monitoring logs.
Reassess exposure if the supported fix cannot be applied.

Operational boundary

This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.