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CVE-2026-46145— RDMA/mana: Validate rx_hash_key_len

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RDMA/mana中rx_hash_key_len未经验证直接传递给memcpy，可能导致用户空间破坏内核内存。

CVSS 7.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 0266a177631d4c6b963b5b12dd986a8c5abdbf06< 7d7c9f0fcd19c4d2f0164347c58d49cafa961b72 affected
0266a177631d4c6b963b5b12dd986a8c5abdbf06< 11c1431d641e0e4e0529e96957995820600c7287 affected
0266a177631d4c6b963b5b12dd986a8c5abdbf06< 012796f9541fcd0c1fa8ae4da7eb4d83931ef838 affected
0266a177631d4c6b963b5b12dd986a8c5abdbf06< 7d94f155f354b961c598f71bafa804dceded513f affected
0266a177631d4c6b963b5b12dd986a8c5abdbf06< 6dd2d4ad9c8429523b1c220c5132bd551c006425 affected
6.2 affected
< 6.2 unaffected
6.6.141≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-46145

Vulnerability Information
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Vulnerability Title
RDMA/mana: Validate rx_hash_key_len
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/mana: Validate rx_hash_key_len Sashiko points out that rx_hash_key_len comes from a uAPI structure and is blindly passed to memcpy, allowing the userspace to trash kernel memory. Bounds check it so the memcpy cannot overflow.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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RDMA/mana中rx_hash_key_len未经验证直接传递给memcpy，可能导致用户空间破坏内核内存。
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 0266a177631d4c6b963b5b12dd986a8c5abdbf06 ~ 7d7c9f0fcd19c4d2f0164347c58d49cafa961b72 -
Linux Linux 6.2 -

II. Public POCs for CVE-2026-46145

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III. Intelligence Information for CVE-2026-46145

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Patches & Fixes for CVE-2026-46145 (5)

Same Patch Batch · Linux · 2026-05-28 · 135 CVEs total

CVE-2026-46135 9.8 CRITICAL nvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-46195 9.8 CRITICAL smb: client: validate dacloffset before building DACL pointers
CVE-2026-46137 9.8 CRITICAL mptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-46115 9.8 CRITICAL block: add pgmap check to biovec_phys_mergeable
CVE-2026-46155 9.1 CRITICAL smb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-46119 9.1 CRITICAL libceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-46185 9.1 CRITICAL smb/client: fix out-of-bounds read in symlink_data()
CVE-2026-46212 8.8 HIGH batman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-46125 8.8 HIGH wifi: mac80211: remove station if connection prep fails
CVE-2026-46174 8.8 HIGH x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-46198 8.8 HIGH batman-adv: fix integer overflow on buff_pos
CVE-2026-46152 8.8 HIGH wifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-46166 8.8 HIGH wifi: mac80211: use safe list iteration in radar detect work
CVE-2026-46238 8.8 HIGH batman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-46113 8.8 HIGH KVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-46138 8.1 HIGH Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-46232 8.1 HIGH HID: playstation: Clamp num_touch_reports
CVE-2026-46129 7.8 HIGH btrfs: fix double free in create_space_info() error path
CVE-2026-46157 7.8 HIGH ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger
CVE-2026-46215 7.8 HIGH drm: Set old handle to NULL before prime swap in change_handle

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46145

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