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CVE-2026-46003— net: qrtr: ns: Limit the total number of nodes

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qrtr命名服务器未限制节点数量，可能导致恶意客户端注册随机节点导致内存耗尽。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.12% · P2

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 0c2204a4ad710d95d348ea006f14ba926e842ffd< b703ee903b24974aca4bde99c7d25d66309d35dd affected
0c2204a4ad710d95d348ea006f14ba926e842ffd< 823310645065bd49666e84af689fa95192819f55 affected
0c2204a4ad710d95d348ea006f14ba926e842ffd< ed29887286aba96d1930f4ddb9f235f6b421073c affected
0c2204a4ad710d95d348ea006f14ba926e842ffd< 4c46413661431aa60fb134cd4ecdf8beaa39f824 affected
0c2204a4ad710d95d348ea006f14ba926e842ffd< 4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0 affected
0c2204a4ad710d95d348ea006f14ba926e842ffd< 5cf6d5e5e3b804a44692fbf548a5179442e2e923 affected
0c2204a4ad710d95d348ea006f14ba926e842ffd< 8022876894d09ae485b499058c3357da683bcc5d affected
0c2204a4ad710d95d348ea006f14ba926e842ffd< 27d5e84e810b0849d08b9aec68e48570461ce313 affected
… +10 more rows
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I. Basic Information for CVE-2026-46003

Vulnerability Information
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Vulnerability Title
net: qrtr: ns: Limit the total number of nodes
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Limit the total number of nodes Currently, the nameserver doesn't limit the number of nodes it handles. This can be an attack vector if a malicious client starts registering random nodes, leading to memory exhaustion. Hence, limit the maximum number of nodes to 64. Note that, limit of 64 is chosen based on the current platform requirements. If requirement changes in the future, this limit can be increased.
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qrtr命名服务器未限制节点数量，可能导致恶意客户端注册随机节点导致内存耗尽。
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 0c2204a4ad710d95d348ea006f14ba926e842ffd ~ b703ee903b24974aca4bde99c7d25d66309d35dd -
Linux Linux 5.7 -

II. Public POCs for CVE-2026-46003

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III. Intelligence Information for CVE-2026-46003

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Patches & Fixes for CVE-2026-46003 (7)

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

CVE-2026-45972 9.8 CRITICAL smb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-45988 9.8 CRITICAL rxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-46039 9.8 CRITICAL rxgk: Fix potential integer overflow in length check
CVE-2026-45898 9.8 CRITICAL RDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-46043 9.1 CRITICAL RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-46056 8.8 HIGH Bluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-45945 8.8 HIGH iommu/vt-d: Fix race condition during PASID entry replacement
CVE-2025-71311 8.2 HIGH fs/ntfs3: Initialize new folios before use
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-2026-46099 8.1 HIGH net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-46010 8.1 HIGH rxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-46076 7.9 HIGH KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-45909 7.8 HIGH clk: mediatek: Drop __initconst from gates
CVE-2026-45935 7.8 HIGH fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot
CVE-2026-46036 7.8 HIGH vfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex
CVE-2026-46062 7.8 HIGH ntfs3: fix integer overflow in run_unpack() volume boundary check
CVE-2026-46065 7.8 HIGH fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info
CVE-2026-45878 7.8 HIGH drm/amdkfd: Fix watch_id bounds checking in debug address watch v2
CVE-2026-45894 7.8 HIGH iommu/vt-d: Clear Present bit before tearing down PASID entry

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-2026-46003

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