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NVD / CVE Program· CNA Linux

CVE-2023-53464: scsi: iscsi_tcp: Check that sock is valid before iscsi_set_param()

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: 0.16% (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 48b19b79cfa37b1e50da3b5a8af529f994c08901, 499757ad3332e2527254f9ab68dec1da087b1d96, 5.10.178.

Low priority for now. Upgrade to Linux Linux 48b19b79cfa37b1e50da3b5a8af529f994c08901, 499757ad3332e2527254f9ab68dec1da087b1d96, 5.10.178 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: scsi: iscsi_tcp: Check that sock is valid before iscsi_set_param() The validity of sock should be checked before assignment to avoid incorrect values. Commit 57569c37f0ad ("scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()") introduced this change which may lead to inconsistent values of tcp_sw_conn->sendpage and conn->datadgst_en. Fix the issue by moving the position of the assignment.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 1, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 5th percentile

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 · 0.1%

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.

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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.

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 kernel5.10.150 and later · before 5.10.178
  • linux linux kernel5.15.75 and later · before 5.15.107
  • linux linux kernel5.19.17 and later · before 6.0
  • linux linux kernel6.0.3 and later · before 6.1.24
  • linux linux kernel6.2 and later · before 6.2.11
  • linux linux kernel6.3

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

    • 897dbbc57d71e8a34ec1af8e573a142de457da38, 0a0b861fce2657ba08ec356a74346b37ca4b2008, 6.1affected
    • 884a788f065578bb640382279a83d1df433b13e6 and later · before 499757ad3332e2527254f9ab68dec1da087b1d96affected · git
    • a26b0658751bb0a3b28386fca715333b104d32a2 and later · before 5e5c5f472972c4bc9430adc08b36763a0fa5b9f7affected · git
    • 57569c37f0add1b6489e1a1563c71519daf732cf and later · before 6e06a68fbbfcd8576eee8f7139fa2b13c9b72e91affected · git
    • 57569c37f0add1b6489e1a1563c71519daf732cf and later · before b287e21e73ec23f3788fbe40037c42dbe6e9a9a9affected · git
    • 57569c37f0add1b6489e1a1563c71519daf732cf and later · before 48b19b79cfa37b1e50da3b5a8af529f994c08901affected · git
    • 5.10.150 and later · before 5.10.178affected · semver
    • 5.15.75 and later · before 5.15.107affected · semver
    • 5.19.17 and later · before 5.20affected · semver
    • 6.0.3 and later · before 6.1affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.25-16.1.25-1

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-2023-53461Oct 1, 2025 · io_uring: wait interruptibly for request completions on exit
    22Monitor
  • ← EarlierCVE-2023-53462Oct 1, 2025 · hsr: Fix uninit-value access in fill_frame_info()
    22Monitor
  • Later →CVE-2023-53465Oct 1, 2025 · soundwire: qcom: fix storing port config out-of-bounds
    28Monitor

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 Linux48b19b79cfa37b1e50da3b5a8af529f994c08901Vendor (CNA)
Linux Linux499757ad3332e2527254f9ab68dec1da087b1d96Vendor (CNA)
Linux Linux5.10.178Vendor (CNA)
Linux Linux5.15.107Vendor (CNA)
Linux Linux5.20Vendor (CNA)
Linux Linux5e5c5f472972c4bc9430adc08b36763a0fa5b9f7Vendor (CNA)
Linux Linux6.1Vendor (CNA)
Linux Linux6e06a68fbbfcd8576eee8f7139fa2b13c9b72e91Vendor (CNA)
Linux Linuxb287e21e73ec23f3788fbe40037c42dbe6e9a9a9Vendor (CNA)
debian:linux6.1.25-1 · 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
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)

CWE-476 · NULL Pointer Dereference

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. Fix✗ → ✓

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

References

Show all references (4 more)

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

All records