CVE-2026-45984 remediation guide

Linux Linux, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix use-after-free in iomap inline data write path The inline data buffer head (dibh) is being released prematurely in gfs2_iomap_begin() via release_metapath() while iomap->inline_data still points to dibh->b_data. This causes a use-after-free when iomap_write_end_inline() later attempts to write to the inline data area. The bug sequence: 1. gfs2_iomap_begin() calls gfs2_meta_inode_buffer() to read inode metadata into dibh 2. Sets iomap->inline_data = dibh->b_data + sizeof(struct gfs2_dinode) 3. Calls release_metapat...

Open CVE record

ProductLinux Linux, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Affected versions>= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 1403989d1b502f4a2c0d0b42ccf1c25748442eff, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 1cae1bafdf9caa9b462b19af06b1a06902e4e142, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 764c3c84b5683e608f43735c803a5f415046686c, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < d87268326b277af3665237ac76a73dd9fa8e21b4, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 87d4954b5c59735a99ea98cb208d47130f6dce7d, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 6d76febba07c40bcf358f63216d36ea68cf1c215, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 815ddd27c0c7171a99fe802fdb19098ddef8b19d, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < faddeb848305e79db89ee0479bb0e33380656321, >= 5.2, >= 5.2 < 5.10.252, >= 5.11 < 5.15.202, >= 5.16 < 6.1.165, >= 6.2 < 6.6.128, >= 6.7 < 6.12.75, >= 6.13 < 6.18.14, >= 6.19 < 6.19.4

Fixed versions5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4

Priority basisReview · CVSS 7.8 · EPSS 0.18%

Identify the affected asset

Confirm whether Linux Linux, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 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: >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 1403989d1b502f4a2c0d0b42ccf1c25748442eff, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 1cae1bafdf9caa9b462b19af06b1a06902e4e142, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 764c3c84b5683e608f43735c803a5f415046686c, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < d87268326b277af3665237ac76a73dd9fa8e21b4, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 87d4954b5c59735a99ea98cb208d47130f6dce7d, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 6d76febba07c40bcf358f63216d36ea68cf1c215, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < 815ddd27c0c7171a99fe802fdb19098ddef8b19d, >= d0a22a4b03b8475b7aa3fa41243c26c291407844 < faddeb848305e79db89ee0479bb0e33380656321, >= 5.2, >= 5.2 < 5.10.252, >= 5.11 < 5.15.202, >= 5.16 < 6.1.165, >= 6.2 < 6.6.128, >= 6.7 < 6.12.75, >= 6.13 < 6.18.14, >= 6.19 < 6.19.4. 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: 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4. 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.