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CVE-2026-45960— hfsplus: return error when node already exists in hfs_bnode_create

AI Predicted 7.8 Difficulty: Moderate EPSS 0.03% · P10

Possible ATT&CK Techniques 1AI

T1496 · Resource Hijacking

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux634725a92938b0f282b17cec0b007dca77adebd2< 1ca428769cb4737a25bd32fb4d1573cc09eeaeefaffected
634725a92938b0f282b17cec0b007dca77adebd2< 507a1de58c21c95ad7c44afccaf1222d1c42246baffected
634725a92938b0f282b17cec0b007dca77adebd2< 986455135b95f32c1f142068e451098fc751749eaffected
634725a92938b0f282b17cec0b007dca77adebd2< 7b57ada854b32310f224abd61bcfec2d5790ff0aaffected
634725a92938b0f282b17cec0b007dca77adebd2< 51838112d9c22502333c3085ca0c0d691e7093c6affected
634725a92938b0f282b17cec0b007dca77adebd2< 2e6ff6a6fc69cc17ed10c9cb6242935d52acd52daffected
634725a92938b0f282b17cec0b007dca77adebd2< 2e9185a42e0e237c74435fd092b7c34537c62156affected
634725a92938b0f282b17cec0b007dca77adebd2< d8a73cc46c8462a969a7516131feb3096f4c49d3affected
… +10 more rows
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I. Basic Information for CVE-2026-45960

Vulnerability Information
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Vulnerability Title
hfsplus: return error when node already exists in hfs_bnode_create
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: hfsplus: return error when node already exists in hfs_bnode_create When hfs_bnode_create() finds that a node is already hashed (which should not happen in normal operation), it currently returns the existing node without incrementing its reference count. This causes a reference count inconsistency that leads to a kernel panic when the node is later freed in hfs_bnode_put(): kernel BUG at fs/hfsplus/bnode.c:676! BUG_ON(!atomic_read(&node->refcnt)) This scenario can occur when hfs_bmap_alloc() attempts to allocate a node that is already in use (e.g., when node 0's bitmap bit is incorrectly unset), or due to filesystem corruption. Returning an existing node from a create path is not normal operation. Fix this by returning ERR_PTR(-EEXIST) instead of the node when it's already hashed. This properly signals the error condition to callers, which already check for IS_ERR() return values.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于hfsplus文件系统中hfs_bnode_create()函数在节点已存在时返回节点而未增加引用计数，可能导致引用计数不一致并引发内核崩溃。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 634725a92938b0f282b17cec0b007dca77adebd2 ~ 1ca428769cb4737a25bd32fb4d1573cc09eeaeef -
LinuxLinux 2.6.16 -

II. Public POCs for CVE-2026-45960

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III. Intelligence Information for CVE-2026-45960

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Patches & Fixes for CVE-2026-45960 (8)

Same Patch Batch · Linux · 2026-05-27 · 276 CVEs total

CVE-2026-460399.8 CRITICALrxgk: Fix potential integer overflow in length check
CVE-2026-458989.8 CRITICALRDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-459889.8 CRITICALrxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-459729.8 CRITICALsmb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-460439.1 CRITICALRDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-460568.8 HIGHBluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-459458.8 HIGHiommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-458438.2 HIGHslip: bound decode() reads against the compressed packet length
CVE-2026-460378.2 HIGHipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-460108.1 HIGHrxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-460998.1 HIGHnet: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-460767.9 HIGHKVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-458947.8 HIGHiommu/vt-d: Clear Present bit before tearing down PASID entry
CVE-2026-459597.8 HIGHcrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree
CVE-2026-460117.8 HIGHmedia: mtk-jpeg: fix use-after-free in release path due to uncancelled work
CVE-2026-460157.8 HIGHtcp: call sk_data_ready() after listener migration
CVE-2026-458527.8 HIGHRDMA/rxe: Fix double free in rxe_srq_from_init
CVE-2026-460587.8 HIGHmedia: amphion: Fix race between m2m job_abort and device_run
CVE-2026-458617.8 HIGHgfs2: Fix slab-use-after-free in qd_put
CVE-2026-460537.8 HIGHnet: rds: fix MR cleanup on copy error

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-45960

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