Skip to content
Noroxi
NVD / CVE Program· CNA canonical

CVE-2025-5054: Race Condition in Canonical Apport

Noroxi assessment

Priority: Monitor (action score 18/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.78% (FIRST EPSS); higher than 56% of all records.
  • 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: Canonical Apport 2.20.1-0ubuntu2.30+esm5, 2.20.11-0ubuntu27.28, 2.20.11-0ubuntu82.7.

Low priority for now. Upgrade to Canonical Apport 2.20.1-0ubuntu2.30+esm5, 2.20.11-0ubuntu27.28, 2.20.11-0ubuntu82.7 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

Race condition in Canonical apport up to and including 2.32.0 allows a local attacker to leak sensitive information via PID-reuse by leveraging namespaces. When handling a crash, the function `_check_global_pid_and_forward`, which detects if the crashing process resided in a container, was being called before `consistency_checks`, which attempts to detect if the crashing process had been replaced. Because of this, if a process crashed and was quickly replaced with a containerized one, apport could be made to forward the core dump to the container, potentially leaking sensitive information. `consistency_checks` is now being called before `_check_global_pid_and_forward`. Additionally, given that the PID-reuse race condition cannot be reliably detected from userspace alone, crashes are only forwarded to containers if the kernel provided a pidfd, or if the crashing process was unprivileged (i.e., if dump mode == 1).

MediumCVSS 4.7 · v3.1—Proof of concept Fix available
Published
May 30, 2025
Updated
Jun 17, 2026
EPSS
0.7% · 56th 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 · 0.7%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · canonical
4.7
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
  • Proof of concept exists, no weaponized module
  • A fix has been released

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

Follow CVE-2025-5054

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for canonical records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

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.

We use this product, ask for help

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
canonicalapport
canonicalubuntu linux

Affected versions

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

  • canonical apportup to 2.32.0 inclusive
  • canonical ubuntu linux16.04
  • canonical ubuntu linux18.04
  • canonical ubuntu linux20.04
  • canonical ubuntu linux22.04
  • canonical ubuntu linux24.04
  • canonical ubuntu linux24.10
  • canonical ubuntu linux25.04

Versions reported by the vendor

Affected version ranges reported by the assigning authority (canonical). Independent of NVD's CPE analysis and usually ahead of it.

  • Canonical Apport

    • 2.20.1 and later · before 2.20.1-0ubuntu2.30+esm5affected · dpkg
    • 2.20.9 and later · before 2.20.9-0ubuntu7.29+esm1affected · dpkg
    • 2.20.11 and later · before 2.20.11-0ubuntu27.28affected · dpkg
    • 2.20.11 and later · before 2.20.11-0ubuntu82.7affected · dpkg
    • 2.28.1 and later · before 2.28.1-0ubuntu3.6affected · dpkg
    • 2.30.0 and later · before 2.30.0-0ubuntu4.3affected · dpkg
    • 2.32.0 and later · before 2.32.0-0ubuntu5.1affected · dpkg
    • 2.32.0 and later · before 2.33.0-0ubuntu1affected · dpkg
    • 2.20 and later · up to and including 2.32.0affected · semver

Same product

canonical: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-1242Apport can be tricked into connecting to arbitrary sockets as the root user
    31Monitor
  • CVE-2021-3899There is a race condition in the 'replaced executable' detection that, with the correct local configuration, allow an attacker to execute ar
    31Monitor
  • CVE-2023-1326local privilege escalation in apport-cli
    31Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2022-28653Jan 30, 2025 · Users can consume unlimited disk space in /var/crash
    30Monitor
  • ← EarlierCVE-2020-11936Jan 30, 2025 · gdbus setgid privilege escalation
    12Monitor
  • Later →CVE-2025-5467Dec 10, 2025 · Ubuntu Apport Insecure File Permissions Vulnerability
    7Monitor

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
Canonical Apport2.20.1-0ubuntu2.30+esm5Vendor (CNA)
Canonical Apport2.20.11-0ubuntu27.28Vendor (CNA)
Canonical Apport2.20.11-0ubuntu82.7Vendor (CNA)
Canonical Apport2.20.9-0ubuntu7.29+esm1Vendor (CNA)
Canonical Apport2.28.1-0ubuntu3.6Vendor (CNA)
Canonical Apport2.30.0-0ubuntu4.3Vendor (CNA)
Canonical Apport2.32.0-0ubuntu5.1Vendor (CNA)
Canonical Apport2.33.0-0ubuntu1Vendor (CNA)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:22025-06-06

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.

  1. Published
  2. First PoC+6 d
  3. TodayNov 4, 2026+523 d

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.

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

If successful

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

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

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

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (2 more)

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

All records