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NVD / CVE Program· CNA Linux

CVE-2023-53803: scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()

Noroxi assessment

Priority: Monitor (action score 32/100)

  • 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: 0.28% (FIRST EPSS).
  • Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 0dfe68394cbe1d4fe579fb325ecc813c50528c5a, 2b28a7d261cb309912596d6a2d383ca370483527, 467afb1dd630d8c6d172bd6cacc125199b5f4f2d.

Low priority for now. Upgrade to Linux Linux 0dfe68394cbe1d4fe579fb325ecc813c50528c5a, 2b28a7d261cb309912596d6a2d383ca370483527, 467afb1dd630d8c6d172bd6cacc125199b5f4f2d 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: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() A fix for: BUG: KASAN: slab-out-of-bounds in ses_enclosure_data_process+0x949/0xe30 [ses] Read of size 1 at addr ffff88a1b043a451 by task systemd-udevd/3271 Checking after (and before in next loop) addl_desc_ptr[1] is sufficient, we expect the size to be sanitized before first access to addl_desc_ptr[1]. Make sure we don't walk beyond end of page.

HighCVSS 8.1 · v3.1—No exploit Fix available
Published
Dec 9, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 21th percentile
CWE
—

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
8.1
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.

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  • 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-2023-53803

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

    • 2.6.32affected
    • 21fab1d0595eacf781705ec3509012a28f298245 and later · before da1a955c48a16e16e925d6544793914e52a6fa51affected · git
    • 21fab1d0595eacf781705ec3509012a28f298245 and later · before 9e5c7d52085b8c84bc82a261580f0eb170039325affected · git
    • 21fab1d0595eacf781705ec3509012a28f298245 and later · before 467afb1dd630d8c6d172bd6cacc125199b5f4f2daffected · git
    • 21fab1d0595eacf781705ec3509012a28f298245 and later · before e4dd25da784b2e07dbfbf04509afa4c5a1375227affected · git
    • 21fab1d0595eacf781705ec3509012a28f298245 and later · before 2b28a7d261cb309912596d6a2d383ca370483527affected · git
    • 21fab1d0595eacf781705ec3509012a28f298245 and later · before 0dfe68394cbe1d4fe579fb325ecc813c50528c5aaffected · git
    • 21fab1d0595eacf781705ec3509012a28f298245 and later · before 799e8dd2022d2e13f0c5c1906b40ceca07a23349affected · git
    • 21fab1d0595eacf781705ec3509012a28f298245 and later · before 9b4f5028e493cb353a5c8f5c45073eeea0303abdaffected · git
    • before 2.6.32not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.20-16.1.20-1
Red Hat:rhel_eus:9.2::appstreambpftool-debuginfobefore 0:7.0.0-284.95.1.el9_20:7.0.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-64k-debug-develbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-64k-debuginfobefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-64k-develbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-debug-debuginfobefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-debug-develbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-debuginfobefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-develbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-devel-matchedbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-docbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-tools-debuginfobefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-zfcpdump-develbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamkernel-zfcpdump-devel-matchedbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2
Red Hat:rhel_eus:9.2::appstreamperfbefore 0:5.14.0-284.95.1.el9_20:5.14.0-284.95.1.el9_2

+36

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-2023-53794Dec 9, 2025 · cifs: fix session state check in reconnect to avoid use-after-free issue
    39Monitor
  • ← EarlierCVE-2023-53800Dec 9, 2025 · ubi: Fix use-after-free when volume resizing failed
    31Monitor
  • Later →CVE-2023-53816Dec 9, 2025 · drm/amdkfd: fix potential kgd_mem UAFs
    31Monitor

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 Linux0dfe68394cbe1d4fe579fb325ecc813c50528c5aVendor (CNA)
Linux Linux2b28a7d261cb309912596d6a2d383ca370483527Vendor (CNA)
Linux Linux467afb1dd630d8c6d172bd6cacc125199b5f4f2dVendor (CNA)
Linux Linux799e8dd2022d2e13f0c5c1906b40ceca07a23349Vendor (CNA)
Linux Linux9b4f5028e493cb353a5c8f5c45073eeea0303abdVendor (CNA)
Linux Linux9e5c7d52085b8c84bc82a261580f0eb170039325Vendor (CNA)
Linux Linuxda1a955c48a16e16e925d6544793914e52a6fa51Vendor (CNA)
Linux Linuxe4dd25da784b2e07dbfbf04509afa4c5a1375227Vendor (CNA)
debian:linux6.1.20-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.0.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-284.95.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage 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 on the same network segment can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 (7 more)

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

All records