CVE-2024-49568

net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg

MEDIUM
5.5
CVSS Score
Published: January 11, 2025 at 12:35 PM UTC
Updated: October 15, 2026 at 10:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.10 ≤ v < 6.6.686.7 ≤ v < 6.12.76.136.13 rc16.13 rc26.13 rc38c3dca341aea885249e08856c4380300b75d2cf5
Vendor states this is fixed in 295a92e3df32e72aff0f4bc25c310e349d07ffbf (fixed)
Vendor states this is fixed in 42f6beb2d5779429417b5f8115a4e3fa695d2a6c (fixed)
Vendor states this is fixed in 49798283fce4c1a24fb1ba4c7c39127739535571 (fixed)
Vendor states this is fixed in 690b9a8db9460d065785548e43fd6a02d247c1b7 (fixed)
Vendor states this is fixed in 7863c9f3d24ba49dbead7e03dfbe40deb5888fdf (fixed)
Vendor states this is fixed in 9cc0170ae646876aa5de2f0cad3066ce53e86f27 (fixed)
Vendor states this is fixed in 5.10 (unaffected)
Vendor states this is fixed in 5.10.271 (unaffected)
Vendor states this is fixed in 5.15.222 (unaffected)
Vendor states this is fixed in 6.1.189 (unaffected)
Vendor states this is fixed in 6.12.7 (unaffected)
Vendor states this is fixed in 6.13 (unaffected)
Vendor states this is fixed in 6.6.68 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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