orangefs: fix double-free of trailer_buf on readdir copy failure (CVE-2026-89498) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89498

orangefs: fix double-free of trailer_buf on readdir copy failure

Answer in brief

CVE-2026-89498 records a Unknown severity vulnerability in orangefs: fix double-free of trailer_buf on readdir copy failure. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=382f4581e67f57209c7aa67e39f26ba076306a2e <2f5454a25127854c232fde5d1d65d16fbcd42d43 \|\| >=382f4581e67f57209c7aa67e39f26ba076306a2e <f796f38a324e89547738f4b70cc33be5be2bc6da \|\| >=382f4581e67f57209c7aa67e39f26ba076306a2e <519f4146b8b8c5f20c2ad01913acd6df2df8fc8e \|\| >=382f4581e67f57209c7aa67e39f26ba076306a2e <f574296be7f46eb60beca851240b526df232f480	2f5454a25127854c232fde5d1d65d16fbcd42d43, f796f38a324e89547738f4b70cc33be5be2bc6da, 519f4146b8b8c5f20c2ad01913acd6df2df8fc8e, f574296be7f46eb60beca851240b526df232f480
Linux/Linuxgeneric	4.12	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 2f5454a25127854c232fde5d1d65d16fbcd42d43 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: orangefs: fix double-free of trailer_buf on readdir copy failure On a readdir downcall, orangefs_devreq_write_iter() frees op->downcall.trailer_buf with vfree() when copy_from_iter_full() fails, but does not clear the pointer before goto Efault. The waiter in do_readdir() is then woken with a negative status and frees the same pointer again on its r < 0 path, causing a deterministic double-free. A client holding /dev/pvfs2-req triggers it by sending a readdir downcall whose declared trailer_size exceeds the bytes it supplies. Clear the pointer after freeing so the readdir-side vfree() becomes a no-op.

Quoted source text, attributed separately from HOL analysis.