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CVE-2026-46098— net: caif: clear client service pointer on teardown

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caif驱动在拆卸时未清除client service指针，可能导致重复拆卸时访问已释放的服务对象。

AI Predicted 7.8 Difficulty: Hard EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 43e3692101086add8719c3b8b50b05c9ac5b14e1< cffca7a18b8f9de7c3d3013a1f5740c412b2a501 affected
43e3692101086add8719c3b8b50b05c9ac5b14e1< 7ef97d4675b05a103648bd9244d91dff7d8c08b0 affected
43e3692101086add8719c3b8b50b05c9ac5b14e1< e16859f3f4426fa349bc5519d582a93d28f5a15d affected
43e3692101086add8719c3b8b50b05c9ac5b14e1< 914c6456fcfc21a3d553945dff62fd1621d6155d affected
43e3692101086add8719c3b8b50b05c9ac5b14e1< 3ac6db584d9d420267bb8413115707eeec76d9cf affected
43e3692101086add8719c3b8b50b05c9ac5b14e1< 63d21a3aa0108b9dde4e99b0d3d5d679ac68c0f9 affected
43e3692101086add8719c3b8b50b05c9ac5b14e1< a4b191ddc12c55ddb62feb096536f819f384d6f1 affected
43e3692101086add8719c3b8b50b05c9ac5b14e1< f7cf8ece8cee3c1ee361991470cdb1eb65ab02e8 affected
… +10 more rows
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I. Basic Information for CVE-2026-46098

Vulnerability Information
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Vulnerability Title
net: caif: clear client service pointer on teardown
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: caif: clear client service pointer on teardown `caif_connect()` can tear down an existing client after remote shutdown by calling `caif_disconnect_client()` followed by `caif_free_client()`. `caif_free_client()` releases the service layer referenced by `adap_layer->dn`, but leaves that pointer stale. When the socket is later destroyed, `caif_sock_destructor()` calls `caif_free_client()` again and dereferences the freed service pointer. Clear the client/service links before releasing the service object so repeated teardown becomes harmless.
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caif驱动在拆卸时未清除client service指针，可能导致重复拆卸时访问已释放的服务对象。
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 43e3692101086add8719c3b8b50b05c9ac5b14e1 ~ cffca7a18b8f9de7c3d3013a1f5740c412b2a501 -
Linux Linux 3.0 -

II. Public POCs for CVE-2026-46098

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III. Intelligence Information for CVE-2026-46098

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Patches & Fixes for CVE-2026-46098 (8)

Same Patch Batch · Linux · 2026-05-27 · 275 CVEs total

CVE-2026-45988 9.8 CRITICAL rxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-45898 9.8 CRITICAL RDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-45972 9.8 CRITICAL smb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-46039 9.8 CRITICAL rxgk: Fix potential integer overflow in length check
CVE-2026-46043 9.1 CRITICAL RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-45945 8.8 HIGH iommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-46056 8.8 HIGH Bluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-45843 8.2 HIGH slip: bound decode() reads against the compressed packet length
CVE-2026-46037 8.2 HIGH ipv4: icmp: validate reply type before using icmp_pointers
CVE-2025-71311 8.2 HIGH fs/ntfs3: Initialize new folios before use
CVE-2026-46010 8.1 HIGH rxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-46099 8.1 HIGH net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-46076 7.9 HIGH KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-45931 7.8 HIGH accel/amdxdna: Hold mm structure across iommu_sva_unbind_device()
CVE-2026-45935 7.8 HIGH fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot
CVE-2026-45909 7.8 HIGH clk: mediatek: Drop __initconst from gates
CVE-2026-46065 7.8 HIGH fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info
CVE-2026-46058 7.8 HIGH media: amphion: Fix race between m2m job_abort and device_run
CVE-2026-46015 7.8 HIGH tcp: call sk_data_ready() after listener migration
CVE-2026-45959 7.8 HIGH crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree

Showing top 20 of 275 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46098

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