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CVE-2024-49568— net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg

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net/smc模块在接收提议消息时，未正确检查v2_ext_offset、eid_cnt和ism_gid_cnt字段，可能导致访问错误地址。

CVSS 9.8 · Critical EPSS 0.57% · P47

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 8c3dca341aea885249e08856c4380300b75d2cf5< 9cc0170ae646876aa5de2f0cad3066ce53e86f27 affected
8c3dca341aea885249e08856c4380300b75d2cf5< 49798283fce4c1a24fb1ba4c7c39127739535571 affected
8c3dca341aea885249e08856c4380300b75d2cf5< 690b9a8db9460d065785548e43fd6a02d247c1b7 affected
8c3dca341aea885249e08856c4380300b75d2cf5< 295a92e3df32e72aff0f4bc25c310e349d07ffbf affected
8c3dca341aea885249e08856c4380300b75d2cf5< 42f6beb2d5779429417b5f8115a4e3fa695d2a6c affected
8c3dca341aea885249e08856c4380300b75d2cf5< 7863c9f3d24ba49dbead7e03dfbe40deb5888fdf affected
5.10 affected
< 5.10 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-49568

Vulnerability Information
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Vulnerability Title
net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg When receiving proposal msg in server, the fields v2_ext_offset/ eid_cnt/ism_gid_cnt in proposal msg are from the remote client and can not be fully trusted. Especially the field v2_ext_offset, once exceed the max value, there has the chance to access wrong address, and crash may happen. This patch checks the fields v2_ext_offset/eid_cnt/ism_gid_cnt before using them.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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net/smc模块在接收提议消息时，未正确检查v2_ext_offset、eid_cnt和ism_gid_cnt字段，可能导致访问错误地址。
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 8c3dca341aea885249e08856c4380300b75d2cf5 ~ 9cc0170ae646876aa5de2f0cad3066ce53e86f27 -
Linux Linux 5.10 -

II. Public POCs for CVE-2024-49568

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III. Intelligence Information for CVE-2024-49568

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Patches & Fixes for CVE-2024-49568 (6)

Same Patch Batch · Linux · 2025-01-11 · 67 CVEs total

CVE-2024-57843 9.8 CRITICAL virtio-net: fix overflow inside virtnet_rq_alloc
CVE-2024-47408 9.8 CRITICAL net/smc: check smcd_v2_ext_offset when receiving proposal msg
CVE-2024-57793 9.3 CRITICAL virt: tdx-guest: Just leak decrypted memory on unrecoverable errors
CVE-2024-49571 9.1 CRITICAL net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg
CVE-2024-55639 8.4 HIGH net: renesas: rswitch: avoid use-after-put for a device tree node
CVE-2024-52319 7.8 HIGH mm: use aligned address in clear_gigantic_page()
CVE-2024-51729 7.8 HIGH mm: use aligned address in copy_user_gigantic_page()
CVE-2024-57849 7.8 HIGH s390/cpum_sf: Handle CPU hotplug remove during sampling
CVE-2024-57850 7.8 HIGH jffs2: Prevent rtime decompress memory corruption
CVE-2024-57875 7.8 HIGH block: RCU protect disk->conv_zones_bitmap
CVE-2024-47794 7.8 HIGH bpf: Prevent tailcall infinite loop caused by freplace
CVE-2024-41149 7.8 HIGH block: avoid to reuse `hctx` not removed from cpuhp callback list
CVE-2024-49569 7.5 HIGH nvme-rdma: unquiesce admin_q before destroy it
CVE-2024-57791 7.5 HIGH net/smc: check return value of sock_recvmsg when draining clc data
CVE-2024-56788 7.5 HIGH net: ethernet: oa_tc6: fix tx skb race condition between reference pointers
CVE-2024-57804 7.3 HIGH scsi: mpi3mr: Fix corrupt config pages PHY state is switched in sysfs
CVE-2024-57792 7.3 HIGH power: supply: gpio-charger: Fix set charge current limits
CVE-2024-56368 7.1 HIGH ring-buffer: Fix overflow in __rb_map_vma
CVE-2024-49573 7.0 HIGH sched/fair: Fix NEXT_BUDDY
CVE-2024-57806 btrfs: fix transaction atomicity bug when enabling simple quotas

Showing top 20 of 67 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-49568

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