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NVD / CVE Program· CNA Linux

CVE-2023-53165: udf: Fix uninitialized array access for some pathnames

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 008ae78d1e12efa904dc819b1ec83e2bca6b2c56, 028f6055c912588e6f72722d89c30b401bbcf013, 3f1368af47acf4d0b2a5fb0d2c0d6919d2234b6d.

Low priority for now. Upgrade to Linux Linux 008ae78d1e12efa904dc819b1ec83e2bca6b2c56, 028f6055c912588e6f72722d89c30b401bbcf013, 3f1368af47acf4d0b2a5fb0d2c0d6919d2234b6d 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: udf: Fix uninitialized array access for some pathnames For filenames that begin with . and are between 2 and 5 characters long, UDF charset conversion code would read uninitialized memory in the output buffer. The only practical impact is that the name may be prepended a "unification hash" when it is not actually needed but still it is good to fix this.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 15, 2025
Updated
Nov 5, 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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2023-53165

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 kernel4.6 and later · before 4.14.324
  • linux linux kernel4.15 and later · before 4.19.293
  • linux linux kernel4.20 and later · before 5.4.255
  • linux linux kernel5.5 and later · before 5.10.192
  • linux linux kernel5.11 and later · before 5.15.123
  • linux linux kernel5.16 and later · before 6.1.42
  • linux linux kernel6.2 and later · before 6.4.7

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

    • 4.6affected
    • 484a10f49387e4386bf2708532e75bf78ffea2cb and later · before 008ae78d1e12efa904dc819b1ec83e2bca6b2c56affected · git
    • 484a10f49387e4386bf2708532e75bf78ffea2cb and later · before b37f998d357102e8eb0f8eeb33f03fff22e49cbfaffected · git
    • 484a10f49387e4386bf2708532e75bf78ffea2cb and later · before 3f1368af47acf4d0b2a5fb0d2c0d6919d2234b6daffected · git
    • 484a10f49387e4386bf2708532e75bf78ffea2cb and later · before 4503f6fc95d6dee85fb2c54785848799e192c51caffected · git
    • 484a10f49387e4386bf2708532e75bf78ffea2cb and later · before 985f9666698960dfc87a106d6314203fa90fda75affected · git
    • 484a10f49387e4386bf2708532e75bf78ffea2cb and later · before a6824149809395dfbb5bc36bc7057cc3cb84e56daffected · git
    • 484a10f49387e4386bf2708532e75bf78ffea2cb and later · before 4d50988da0db167aed6f38685145cb5cd526c4f8affected · git
    • 484a10f49387e4386bf2708532e75bf78ffea2cb and later · before 028f6055c912588e6f72722d89c30b401bbcf013affected · git
    • before 4.6not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.52-16.1.52-1
Debian:13linuxbefore 6.4.11-16.4.11-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-64kbbefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-azurebefore 6.4.0-150600.8.52.16.4.0-150600.8.52.1
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-defaultbefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-default-basebefore 6.4.0-150600.23.73.1.150600.12.32.16.4.0-150600.23.73.1.150600.12.32.1
openSUSE:Leap 15.6kernel-docsbefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-obs-buildbefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-rtbefore 6.4.0-150600.10.55.16.4.0-150600.10.55.1
openSUSE:Leap 15.6kernel-rt_debugbefore 6.4.0-150600.10.55.16.4.0-150600.10.55.1
openSUSE:Leap 15.6kernel-sourcebefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-source-azurebefore 6.4.0-150600.8.52.16.4.0-150600.8.52.1
openSUSE:Leap 15.6kernel-source-rtbefore 6.4.0-150600.10.55.16.4.0-150600.10.55.1
openSUSE:Leap 15.6kernel-symsbefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
openSUSE:Leap 15.6kernel-syms-azurebefore 6.4.0-150600.8.52.16.4.0-150600.8.52.1
openSUSE:Leap 15.6kernel-syms-rtbefore 6.4.0-150600.10.55.16.4.0-150600.10.55.1
openSUSE:Leap 15.6kernel-zfcpdumpbefore 6.4.0-150600.23.73.16.4.0-150600.23.73.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_16before 1-150600.13.3.11-150600.13.3.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6-RT_Update_16before 1-150600.1.3.11-150600.1.3.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_6before 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-2023-53149Sep 15, 2025 · ext4: avoid deadlock in fs reclaim with page writeback
    22Monitor
  • ← EarlierCVE-2023-53153Sep 15, 2025 · wifi: cfg80211: Fix use after free for wext
    31Monitor
  • Later →CVE-2023-53167Sep 15, 2025 · tracing: Fix null pointer dereference in tracing_err_log_open()
    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 Linux008ae78d1e12efa904dc819b1ec83e2bca6b2c56Vendor (CNA)
Linux Linux028f6055c912588e6f72722d89c30b401bbcf013Vendor (CNA)
Linux Linux3f1368af47acf4d0b2a5fb0d2c0d6919d2234b6dVendor (CNA)
Linux Linux4503f6fc95d6dee85fb2c54785848799e192c51cVendor (CNA)
Linux Linux4d50988da0db167aed6f38685145cb5cd526c4f8Vendor (CNA)
Linux Linux985f9666698960dfc87a106d6314203fa90fda75Vendor (CNA)
Linux Linuxa6824149809395dfbb5bc36bc7057cc3cb84e56dVendor (CNA)
Linux Linuxb37f998d357102e8eb0f8eeb33f03fff22e49cbfVendor (CNA)
debian:linux6.1.52-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.73.1.150600.12.32.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-zfcpdump6.4.0-150600.23.73.1 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.73.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-azure6.4.0-150600.8.52.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150600.23.73.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.73.1.150600.12.32.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-docs6.4.0-150600.23.73.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_161-150600.13.3.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-obs-build6.4.0-150600.23.73.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-source6.4.0-150600.23.73.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-source-azure6.4.0-150600.8.52.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)

+3

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.

  • CVE-2024-50302300 days apartHID: core: zero-initialize the report bufferKEV
    52Plan
  • CVE-2026-52989282 days apartnvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
    39Monitor
  • CVE-2026-53225283 days apartsctp: fix uninit-value in __sctp_rcv_asconf_lookup()
    36Monitor
  • CVE-2024-47685329 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()
    36Monitor
  • CVE-2026-53170283 days apartaccel/ethosu: reject DMA commands with uninitialized length
    35Monitor
  • CVE-2026-43139233 days apartxfrm6: fix uninitialized saddr in xfrm6_get_saddr()
    34Monitor

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-908 · Use of Uninitialized Resource

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 (7 more)

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

All records