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CVE-2026-72161— ocfs2: add journal NULL check in ocfs2_checkpoint_inode()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于ocfs2_checkpoint_inode()函数在卸载时未检查journal是否为空，可能导致空指针取消引用。

AI Predicted 5.5 Difficulty: Easy EPSS 0.21% · P11

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux da5e7c87827e8caa6a1eeec6d95dcf74ab592a01< 24daf13422e8328fd588c34a017bdef1949910e8 affected
da5e7c87827e8caa6a1eeec6d95dcf74ab592a01< 7da7e4ac21895fe34cceffcfc99497cc2750da99 affected
da5e7c87827e8caa6a1eeec6d95dcf74ab592a01< eb6a13834c23e291f1170cb1b489ec255edfa5a3 affected
da5e7c87827e8caa6a1eeec6d95dcf74ab592a01< 499714de42ab4d2e778cbb10186684142a1222eb affected
da5e7c87827e8caa6a1eeec6d95dcf74ab592a01< 63921f790234b221e4b15c56c72888b13250f81d affected
da5e7c87827e8caa6a1eeec6d95dcf74ab592a01< a291c77c034b7a81849ce9b71cc9ecda9e587d89 affected
5.16 affected
< 5.16 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-72161

Vulnerability Information
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Vulnerability Title
ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于ocfs2_checkpoint_inode()函数在卸载时未检查journal是否为空，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 ~ 24daf13422e8328fd588c34a017bdef1949910e8 -
Linux Linux 5.16 -

II. Public POCs for CVE-2026-72161

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III. Intelligence Information for CVE-2026-72161

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Patches & Fixes for CVE-2026-72161 (6)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72201 9.8 CRITICAL ntfs: validate index entries on reading
CVE-2026-72065 9.8 CRITICAL net: mana: Validate the packet length reported by the NIC
CVE-2026-72064 9.8 CRITICAL net: mana: Sync page pool RX frags for CPU
CVE-2026-74480 9.8 CRITICAL net: bridge: stop fast-leave after deleting a port group
CVE-2026-72191 9.8 CRITICAL ntfs3: validate split-point offset in indx_insert_into_buffer
CVE-2026-72192 9.8 CRITICAL ntfs3: bound to_move in indx_insert_into_root before hdr_insert_head
CVE-2026-74478 9.8 CRITICAL um: vector: fix use-after-free in vector_mmsg_rx()
CVE-2026-72194 9.8 CRITICAL fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow
CVE-2026-74269 9.8 CRITICAL bnxt: fix head underflow on XDP head-grow
CVE-2026-72209 9.8 CRITICAL ntfs: validate attribute values on lookup
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72210 9.8 CRITICAL ntfs: fix off-by-one in mapping pairs decoding bounds checks

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72161

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