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NVD / CVE Program· CNA mitre

CVE-2023-26545: In the Linux kernel before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure (for registering the sysctl table

Noroxi assessment

Priority: Monitor (action score 18/100)

  • 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: 0.32% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: linux (Debian:12) 6.1.15-1; dtb-aarch64 (openSUSE:Leap 15.4) 5.14.21-150400.24.55.1, 5.3.18-150300.59.115.1; kernel-64kb (openSUSE:Leap 15.4) 5.14.21-150400.24.55.2.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to linux (Debian:12) 6.1.15-1; dtb-aarch64 (openSUSE:Leap 15.4) 5.14.21-150400.24.55.1, 5.3.18-150300.59.115.1; kernel-64kb (openSUSE:Leap 15.4) 5.14.21-150400.24.55.2 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 before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure (for registering the sysctl table under a new location) during the renaming of a device.

MediumCVSS 4.7 · v3.1—No exploit Fix available
Published
Feb 25, 2023
Updated
Jun 17, 2026
EPSS
0.3% · 25th percentile

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

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-2023-26545

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
debiandebian linux
netapph300s firmware
netapph300s
netapph500s firmware
netapph500s
netapph700s firmware
netapph700s
netapph410s firmware
netapph410s
netapph410c firmware
netapph410c

Affected versions

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

  • debian debian linux10.0
  • linux linux kernel4.1 and later · before 6.1.13
  • netapp h300s firmwareall versions
  • netapp h410c firmwareall versions
  • netapp h410s firmwareall versions
  • netapp h500s firmwareall versions
  • netapp h700s firmwareall versions

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.15-16.1.15-1
openSUSE:Leap 15.4dtb-aarch64before 5.14.21-150400.24.55.15.14.21-150400.24.55.1
openSUSE:Leap 15.4dtb-aarch64before 5.3.18-150300.59.115.15.3.18-150300.59.115.1
openSUSE:Leap 15.4kernel-64kbbefore 5.14.21-150400.24.55.25.14.21-150400.24.55.2
openSUSE:Leap 15.4kernel-azurebefore 5.14.21-150400.14.37.15.14.21-150400.14.37.1
openSUSE:Leap 15.4kernel-debugbefore 5.14.21-150400.24.55.35.14.21-150400.24.55.3
openSUSE:Leap 15.4kernel-debugbefore 4.12.14-150100.197.137.24.12.14-150100.197.137.2
openSUSE:Leap 15.4kernel-defaultbefore 4.12.14-150100.197.137.24.12.14-150100.197.137.2
openSUSE:Leap 15.4kernel-docsbefore 5.14.21-150400.24.55.15.14.21-150400.24.55.1
openSUSE:Leap 15.4kernel-kvmsmallbefore 4.12.14-150100.197.137.24.12.14-150100.197.137.2
openSUSE:Leap 15.4kernel-kvmsmallbefore 5.14.21-150400.24.55.35.14.21-150400.24.55.3
openSUSE:Leap 15.4kernel-obs-buildbefore 5.14.21-150400.24.55.35.14.21-150400.24.55.3
openSUSE:Leap 15.4kernel-obs-qabefore 5.14.21-150400.24.55.15.14.21-150400.24.55.1
openSUSE:Leap 15.4kernel-rt_debugbefore 5.14.21-150400.15.18.15.14.21-150400.15.18.1
openSUSE:Leap 15.4kernel-sourcebefore 5.14.21-150400.24.55.25.14.21-150400.24.55.2
openSUSE:Leap 15.4kernel-source-azurebefore 5.14.21-150400.14.37.15.14.21-150400.14.37.1
openSUSE:Leap 15.4kernel-source-rtbefore 5.14.21-150400.15.18.15.14.21-150400.15.18.1
openSUSE:Leap 15.4kernel-symsbefore 5.14.21-150400.24.55.15.14.21-150400.24.55.1
openSUSE:Leap 15.4kernel-syms-azurebefore 5.14.21-150400.14.37.15.14.21-150400.14.37.1
openSUSE:Leap 15.4kernel-syms-rtbefore 5.14.21-150400.15.18.15.14.21-150400.15.18.1
openSUSE:Leap 15.4kernel-vanillabefore 4.12.14-150100.197.137.24.12.14-150100.197.137.2
openSUSE:Leap 15.4kernel-zfcpdumpbefore 4.12.14-150100.197.137.24.12.14-150100.197.137.2
openSUSE:Leap 15.4kernel-zfcpdumpbefore 5.14.21-150400.24.55.25.14.21-150400.24.55.2
openSUSE:Leap Micro 5.3kernel-defaultbefore 5.14.21-150400.24.55.35.14.21-150400.24.55.3

+96

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-2023-0597Feb 23, 2023 · A flaw possibility of memory leak in the Linux kernel cpu_entry_area mapping of X86 CPU data to memory was found in the way user can guess l
    22Monitor
  • ← EarlierCVE-2023-26544Feb 25, 2023 · In the Linux kernel 6.0.8, there is a use-after-free in run_unpack in fs/ntfs3/run.c, related to a difference between NTFS sector size and m
    31Monitor
  • Later →CVE-2023-26605Feb 26, 2023 · In the Linux kernel 6.0.8, there is a use-after-free in inode_cgwb_move_to_attached in fs/fs-writeback.c, related to __list_del_entry_valid.
    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
debian:linux6.1.15-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch645.3.18-150300.59.115.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-azure5.14.21-150400.14.37.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-debug4.12.14-150100.197.137.2 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-default4.12.14-150100.197.137.2 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-kvmsmall4.12.14-150100.197.137.2 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-rt5.14.21-150400.15.18.1 · openSUSE:Leap Micro 5.3Package registry (OSV)
opensuse:kernel-rt_debug5.14.21-150400.15.18.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-source-azure5.14.21-150400.14.37.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-source-rt5.14.21-150400.15.18.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-syms-azure5.14.21-150400.14.37.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-vanilla4.12.14-150100.197.137.2 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-zfcpdump4.12.14-150100.197.137.2 · openSUSE:Leap 15.4Package registry (OSV)
red hat:bpftool0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-devel0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-modules0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-modules-extra0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debuginfo0:4.18.0-477.43.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
suse:kernel-azure4.12.14-16.127.1 · SUSE:Linux Enterprise Server 12 SP5Package registry (OSV)
suse:kernel-default4.12.14-150100.197.137.2 · SUSE:Linux Enterprise Live Patching 15 SP1Package registry (OSV)
suse:kernel-default4.4.121-92.202.5 · SUSE:Linux Enterprise Server 12 SP2-BCLPackage registry (OSV)
suse:kernel-docs4.12.14-150100.197.137.2 · SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP1_Update_381-150100.3.3.2 · SUSE:Linux Enterprise Live Patching 15 SP1Package registry (OSV)

+13

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

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

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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.
  • Special conditions such as timing or configuration are required.

If successful

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

Weakness class (CWE)

CWE-415 · Double Free

CVSS vector

CVSS:3.1/AV:L/AC:H/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 (5 more)

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

All records