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CVE-2026-72161

ocfs2: add journal NULL check in ocfs2_checkpoint_inode() PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 before 24daf13422e8328fd588c34a017bdef1949910e8; affected da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 before 7da7e4ac21895fe34cceffcfc99497cc2750da99; affected da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 before eb6a13834c23e291f1170cb1b489ec255edfa5a3; affected da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 before 499714de42ab4d2e778cbb10186684142a1222eb; affected da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 before 63921f790234b221e4b15c56c72888b13250f81d; affected da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 before a291c77c034b7a81849ce9b71cc9ecda9e587d89
Linux / Linuxaffected 5.16; unaffected 0 before 5.16; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through *

CWE

No CWE identifiers supplied.

References