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CVE-2026-72219— lockd: Plug nlm_file leak when nlm_do_fopen() fails

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lockd组件中nlm_do_fopen()失败时未释放新分配的nlm_file，导致内存泄漏，可能造成拒绝服务。

AI Predicted 5.5 Difficulty: Easy EPSS 0.22% · P12

Affected Version Matrix 19

VendorProduct Version RangeStatus
Linux Linux e580323ac0b51ad10ec2e181d1f777479b7983e7< bca74fff138429f3d5802865f38fc883d53a4f1a affected
7f024fcd5c97dc70bb9121c80407cf3cf9be7159< d7c677feb3aa1f42b1026d75a8ea61338b51e4fb affected
7f024fcd5c97dc70bb9121c80407cf3cf9be7159< 39f59bf67231ed2eb0cdf6337194360e964b609a affected
7f024fcd5c97dc70bb9121c80407cf3cf9be7159< ddfbd816273b4e9c9b836f5b8773664c6f40f807 affected
7f024fcd5c97dc70bb9121c80407cf3cf9be7159< 1403f1221a35a6caf959bb7bf005741f17263c66 affected
7f024fcd5c97dc70bb9121c80407cf3cf9be7159< 1161c4b5bd0048c8148e919f818a33cff3623ef0 affected
7f024fcd5c97dc70bb9121c80407cf3cf9be7159< 3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9 affected
7f024fcd5c97dc70bb9121c80407cf3cf9be7159< f16a1513452edb532fec81e591c64c320866719c affected
… +11 more rows
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I. Basic Information for CVE-2026-72219

Vulnerability Information
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Vulnerability Title
lockd: Plug nlm_file leak when nlm_do_fopen() fails
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: lockd: Plug nlm_file leak when nlm_do_fopen() fails A client can repeatedly drive nlm_do_fopen() failures by presenting file handles that the underlying export rejects. After kzalloc_obj() succeeds in nlm_lookup_file(), the freshly allocated nlm_file is not yet inserted into nlm_files[]. The nlm_do_fopen() failure path jumps to out_unlock, which releases nlm_file_mutex and returns without freeing the allocation, so each failure leaks one nlm_file. Route the failure through out_free so kfree() runs before the function returns.
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lockd组件中nlm_do_fopen()失败时未释放新分配的nlm_file，导致内存泄漏，可能造成拒绝服务。
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 e580323ac0b51ad10ec2e181d1f777479b7983e7 ~ bca74fff138429f3d5802865f38fc883d53a4f1a -
Linux Linux 5.15 -

II. Public POCs for CVE-2026-72219

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III. Intelligence Information for CVE-2026-72219

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Patches & Fixes for CVE-2026-72219 (8)

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-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
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-2026-74268 9.8 CRITICAL tcp: clear sock_ops cb flags before force-closing a child socket
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-2026-74478 9.8 CRITICAL um: vector: fix use-after-free in vector_mmsg_rx()
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-2026-74269 9.8 CRITICAL bnxt: fix head underflow on XDP head-grow
CVE-2026-72194 9.8 CRITICAL fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow
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-2026-72219

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