ocfs2: add journal NULL check in ocfs2_checkpoint_inode() (CVE-2026-72161) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-72161

ocfs2: add journal NULL check in ocfs2_checkpoint_inode()

Answer in brief

CVE-2026-72161 records a Unknown severity vulnerability in ocfs2: add journal NULL check in ocfs2_checkpoint_inode(). 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 Aug 15, 2026Updated Aug 17, 2026Source checked Sep 30, 2026First seen by HOL Aug 15, 2026Material review Aug 17, 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	>=da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 <24daf13422e8328fd588c34a017bdef1949910e8 \|\| >=da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 <7da7e4ac21895fe34cceffcfc99497cc2750da99 \|\| >=da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 <eb6a13834c23e291f1170cb1b489ec255edfa5a3 \|\| >=da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 <499714de42ab4d2e778cbb10186684142a1222eb \|\| >=da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 <63921f790234b221e4b15c56c72888b13250f81d \|\| >=da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 <a291c77c034b7a81849ce9b71cc9ecda9e587d89	24daf13422e8328fd588c34a017bdef1949910e8, 7da7e4ac21895fe34cceffcfc99497cc2750da99, eb6a13834c23e291f1170cb1b489ec255edfa5a3, 499714de42ab4d2e778cbb10186684142a1222eb, 63921f790234b221e4b15c56c72888b13250f81d, a291c77c034b7a81849ce9b71cc9ecda9e587d89
Linux/Linuxgeneric	5.16	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 24daf13422e8328fd588c34a017bdef1949910e8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ocfs2: add journal NULL check in ocfs2_checkpoint_inode() During unmount, ocfs2_journal_shutdown() frees the journal and sets osb->journal to NULL. Later, when VFS evicts remaining cached inodes, ocfs2_evict_inode() -> ocfs2_clear_inode() -> ocfs2_checkpoint_inode() -> ocfs2_ci_fully_checkpointed() dereferences osb->journal, causing a NULL pointer dereference. Fix this by adding a NULL check for osb->journal in ocfs2_checkpoint_inode(). If the journal is NULL, it has already been fully flushed and destroyed during shutdown, so there is nothing to checkpoint.

Quoted source text, attributed separately from HOL analysis.