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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.57% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 295a92e3df32e72aff0f4bc25c310e349d07ffbf, 42f6beb2d5779429417b5f8115a4e3fa695d2a6c, 49798283fce4c1a24fb1ba4c7c39127739535571; cbl2 kernel 5.15.202.1-1 on CBL-Mariner 2.0 Release Notes.
  • Severity is disputed: the assigning authority (CNA) scores it 9.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 295a92e3df32e72aff0f4bc25c310e349d07ffbf, 42f6beb2d5779429417b5f8115a4e3fa695d2a6c, 49798283fce4c1a24fb1ba4c7c39127739535571; cbl2 kernel 5.15.202.1-1 on CBL-Mariner 2.0 Release Notes or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jan 11, 2025
Updated
Oct 15, 2026
EPSS
0.5% · 47th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
9.8
4.3 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.10 and later · before 6.6.68
  • linux linux kernel6.7 and later · before 6.12.7
  • linux linux kernel6.13

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.10affected
    • 8c3dca341aea885249e08856c4380300b75d2cf5 and later · before 9cc0170ae646876aa5de2f0cad3066ce53e86f27affected · git
    • 8c3dca341aea885249e08856c4380300b75d2cf5 and later · before 49798283fce4c1a24fb1ba4c7c39127739535571affected · git
    • 8c3dca341aea885249e08856c4380300b75d2cf5 and later · before 690b9a8db9460d065785548e43fd6a02d247c1b7affected · git
    • 8c3dca341aea885249e08856c4380300b75d2cf5 and later · before 295a92e3df32e72aff0f4bc25c310e349d07ffbfaffected · git
    • 8c3dca341aea885249e08856c4380300b75d2cf5 and later · before 42f6beb2d5779429417b5f8115a4e3fa695d2a6caffected · git
    • 8c3dca341aea885249e08856c4380300b75d2cf5 and later · before 7863c9f3d24ba49dbead7e03dfbe40deb5888fdfaffected · git
    • before 5.10not affected · semver
    • 5.10.271 and later · up to and including 5.10.*not affected · semver
    • 5.15.222 and later · up to and including 5.15.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:13linuxbefore 6.12.8-16.12.8-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.60.36.4.0-150600.23.60.3
openSUSE:Leap 15.6kernel-64kbbefore 6.4.0-150600.23.60.46.4.0-150600.23.60.4
openSUSE:Leap 15.6kernel-azurebefore 6.4.0-150600.8.43.16.4.0-150600.8.43.1
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.60.46.4.0-150600.23.60.4
openSUSE:Leap 15.6kernel-defaultbefore 6.4.0-150600.23.60.56.4.0-150600.23.60.5
openSUSE:Leap 15.6kernel-default-basebefore 6.4.0-150600.23.60.5.150600.12.26.46.4.0-150600.23.60.5.150600.12.26.4
openSUSE:Leap 15.6kernel-docsbefore 6.4.0-150600.23.60.36.4.0-150600.23.60.3
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.60.46.4.0-150600.23.60.4
openSUSE:Leap 15.6kernel-obs-buildbefore 6.4.0-150600.23.60.36.4.0-150600.23.60.3
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.60.26.4.0-150600.23.60.2
openSUSE:Leap 15.6kernel-rtbefore 6.4.0-150600.10.44.16.4.0-150600.10.44.1
openSUSE:Leap 15.6kernel-rt_debugbefore 6.4.0-150600.10.44.16.4.0-150600.10.44.1
openSUSE:Leap 15.6kernel-sourcebefore 6.4.0-150600.23.60.46.4.0-150600.23.60.4
openSUSE:Leap 15.6kernel-source-azurebefore 6.4.0-150600.8.43.16.4.0-150600.8.43.1
openSUSE:Leap 15.6kernel-source-rtbefore 6.4.0-150600.10.44.16.4.0-150600.10.44.1
openSUSE:Leap 15.6kernel-symsbefore 6.4.0-150600.23.60.46.4.0-150600.23.60.4
openSUSE:Leap 15.6kernel-syms-azurebefore 6.4.0-150600.8.43.16.4.0-150600.8.43.1
openSUSE:Leap 15.6kernel-syms-rtbefore 6.4.0-150600.10.44.16.4.0-150600.10.44.1
openSUSE:Leap 15.6kernel-zfcpdumpbefore 6.4.0-150600.23.60.46.4.0-150600.23.60.4
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_13before 1-150600.13.6.41-150600.13.6.4
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6-RT_Update_13before 1-150600.1.5.11-150600.1.5.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_2before 1-150700.15.3.11-150700.15.3.1

+36

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-47809Jan 11, 2025 · dlm: fix possible lkb_resource null dereference
    22Monitor
  • ← EarlierCVE-2024-48881Jan 11, 2025 · bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again
    22Monitor
  • Later →CVE-2024-49569Jan 11, 2025 · nvme-rdma: unquiesce admin_q before destroy it
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux295a92e3df32e72aff0f4bc25c310e349d07ffbfVendor (CNA)
Linux Linux42f6beb2d5779429417b5f8115a4e3fa695d2a6cVendor (CNA)
Linux Linux49798283fce4c1a24fb1ba4c7c39127739535571Vendor (CNA)
Linux Linux690b9a8db9460d065785548e43fd6a02d247c1b7Vendor (CNA)
Linux Linux7863c9f3d24ba49dbead7e03dfbe40deb5888fdfVendor (CNA)
Linux Linux9cc0170ae646876aa5de2f0cad3066ce53e86f27Vendor (CNA)
cbl2 kernel 5.15.202.1-1 on CBL-Mariner 2.0Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.8-1 · Debian:13Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.60.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.60.4 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-azure6.4.0-150600.8.43.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.60.4 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.60.5 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.60.5.150600.12.26.4 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-rt6.4.0-150600.10.44.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-rt_debug6.4.0-150600.10.44.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source-azure6.4.0-150600.8.43.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source-rt6.4.0-150600.10.44.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms-azure6.4.0-150600.8.43.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms-rt6.4.0-150600.10.44.1 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150700.53.6.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-azure6.4.0-150600.8.43.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150700.53.6.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-default-base6.4.0-150700.53.6.1.150700.17.6.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-docs6.4.0-150700.53.6.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6-RT_Update_131-150600.1.5.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7_Update_21-150700.15.3.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-obs-build6.4.0-150700.53.6.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:kernel-rt6.4.0-150600.10.44.1 · SUSE:Real Time Module 15 SP6Package registry (OSV)

+8

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records