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NVD / CVE Program· CNA Linux

CVE-2023-53729: soc: qcom: qmi_encdec: Restrict string length in decode

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.15% (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.
  • Fixed version: Linux Linux 22ee7c9c7f381be178b4457bc54530002e08e938, 2ccab9f82772ead618689d17dbc6950d6bd1e741, 64c5e916fabe5ef7bef0210b8a59fa8941ee1b8e.

Low priority for now. Upgrade to Linux Linux 22ee7c9c7f381be178b4457bc54530002e08e938, 2ccab9f82772ead618689d17dbc6950d6bd1e741, 64c5e916fabe5ef7bef0210b8a59fa8941ee1b8e 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: soc: qcom: qmi_encdec: Restrict string length in decode The QMI TLV value for strings in a lot of qmi element info structures account for null terminated strings with MAX_LEN + 1. If a string is actually MAX_LEN + 1 length, this will cause an out of bounds access when the NULL character is appended in decoding.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Oct 22, 2025
Updated
Oct 28, 2026
EPSS
0.1% · 4th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-53729

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

—

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

    • 4.16affected
    • 9b8a11e82615274d4133aab3cf5aa1c59191f0a2 and later · before 6b58859e7c4ac357517a59f0801e8ce1b58a8ee2affected · git
    • 9b8a11e82615274d4133aab3cf5aa1c59191f0a2 and later · before 64c5e916fabe5ef7bef0210b8a59fa8941ee1b8eaffected · git
    • 9b8a11e82615274d4133aab3cf5aa1c59191f0a2 and later · before 2ccab9f82772ead618689d17dbc6950d6bd1e741affected · git
    • 9b8a11e82615274d4133aab3cf5aa1c59191f0a2 and later · before b2f39b813d1eed4a522428d1e6acd7dfe9b81579affected · git
    • 9b8a11e82615274d4133aab3cf5aa1c59191f0a2 and later · before f6250ecb7fbb934b89539e7e2ba6c1d8555c0975affected · git
    • 9b8a11e82615274d4133aab3cf5aa1c59191f0a2 and later · before 22ee7c9c7f381be178b4457bc54530002e08e938affected · git
    • 9b8a11e82615274d4133aab3cf5aa1c59191f0a2 and later · before 8d207400fd6b79c92aeb2f33bb79f62dff904ea2affected · git
    • before 4.16not affected · semver
    • 4.19.295 and later · up to and including 4.19.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.55-16.1.55-1
Debian:13linuxbefore 6.5.6-16.5.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-53726Oct 22, 2025 · arm64: csum: Fix OoB access in IP checksum code for negative lengths
    28Monitor
  • ← EarlierCVE-2023-53727Oct 22, 2025 · net/sched: fq_pie: avoid stalls in fq_pie_timer()
    0Monitor
  • Later →CVE-2023-53730Oct 22, 2025 · blk-iocost: use spin_lock_irqsave in adjust_inuse_and_calc_cost
    0Monitor

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 Linux22ee7c9c7f381be178b4457bc54530002e08e938Vendor (CNA)
Linux Linux2ccab9f82772ead618689d17dbc6950d6bd1e741Vendor (CNA)
Linux Linux64c5e916fabe5ef7bef0210b8a59fa8941ee1b8eVendor (CNA)
Linux Linux6b58859e7c4ac357517a59f0801e8ce1b58a8ee2Vendor (CNA)
Linux Linux8d207400fd6b79c92aeb2f33bb79f62dff904ea2Vendor (CNA)
Linux Linuxb2f39b813d1eed4a522428d1e6acd7dfe9b81579Vendor (CNA)
Linux Linuxf6250ecb7fbb934b89539e7e2ba6c1d8555c0975Vendor (CNA)
debian:linux6.1.55-1 · Debian:12Package registry (OSV)

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

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

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 (6 more)

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

All records