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CVE-2026-45887— af_unix: Fix memleak of newsk in unix_stream_connect().

AI Predicted 5.5 Difficulty: Trivial EPSS 0.02% · P6

Possible ATT&CK Techniques 1AI

T1562

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinuxfd0a109a0f6b7524543d17520da92a44a9f5343c< 365996a2b14d07caa9e33d367b67ea26c09d89b4affected
fd0a109a0f6b7524543d17520da92a44a9f5343c< a5d95d7caba0160fb7b2b8d2bd96d5a1be861d9faffected
fd0a109a0f6b7524543d17520da92a44a9f5343c< 6884028cd7f275f8bcb854a347265cb1fb0e4beaaffected
6.16affected
< 6.16unaffected
6.18.14≤ 6.18.*unaffected
6.19.4≤ 6.19.*unaffected
7.0≤ *unaffected
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I. Basic Information for CVE-2026-45887

Vulnerability Information
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Vulnerability Title
af_unix: Fix memleak of newsk in unix_stream_connect().
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix memleak of newsk in unix_stream_connect(). When prepare_peercred() fails in unix_stream_connect(), unix_release_sock() is not called for newsk, and the memory is leaked. Let's move prepare_peercred() before unix_create1().
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unix_stream_connect函数中prepare_peercred失败时未释放新套接字，导致内存泄漏。
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 fd0a109a0f6b7524543d17520da92a44a9f5343c ~ 365996a2b14d07caa9e33d367b67ea26c09d89b4 -
LinuxLinux 6.16 -

II. Public POCs for CVE-2026-45887

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III. Intelligence Information for CVE-2026-45887

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Patches & Fixes for CVE-2026-45887 (3)

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-2026-460378.2 HIGHipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-458438.2 HIGHslip: bound decode() reads against the compressed packet length
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-2026-458787.8 HIGHdrm/amdkfd: Fix watch_id bounds checking in debug address watch v2
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-2026-458947.8 HIGHiommu/vt-d: Clear Present bit before tearing down PASID entry
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-2026-458627.8 HIGHiommu/vt-d: Flush cache for PASID table before using it
CVE-2026-458617.8 HIGHgfs2: Fix slab-use-after-free in qd_put

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-2026-45887

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