CVE-2023-53856: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2023-53856DEBIAN-CVE-2023-53856
Published 09-12-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2023-53856 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.7% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 8
SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1SUSE-SU-2026:0293-1SUSE-SU-2026:0315-1SUSE-SU-2026:20477-1SUSE-SU-2026:20498-1

Timeline

  1. 09-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: of: overlay: Call of_changeset_init() early When of_overlay_fdt_apply() fails, the changeset may be partially applied, and the caller is still expected to call of_overlay_remove() to clean up this partial state. However, of_overlay_apply() calls of_resolve_phandles() before init_overlay_changeset(). Hence if the overlay fails to apply due to an unresolved symbol, the overlay_changeset.cset.entries list is still uninitialized, and cleanup will crash with a NULL-pointer dereference in overlay_removal_is_ok(). Fix this by moving the call to of_changeset_init() from init_overlay_changeset() to of_overlay_fdt_apply(), where all other early initialization is done.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

0.00 pp

From 0.23% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu123 products
  • linuxAll versions (No fix recorded) | < 5.15.0-94.104
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1053.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.55-1 | < 6.5.3-1
Linux1 product
  • linux≥ f948d6d8b792bb90041edc12eac35faf83030994, < 01bb96ad38089f5cc6de7746dac13437d35eb1dc | ≥ f948d6d8b792bb90041edc12eac35faf83030994, < 3fb210cd521c9efcb211e9f5ce40fc907200bf13 | ≥ f948d6d8b792bb90041edc12eac35faf83030994, < be86241bf5d1efd16d8a7231c13b33459c5d755d | ≥ f948d6d8b792bb90041edc12eac35faf83030994, < c403c81b577a67fe9ec6a2e89d143256487be50f | ≥ f948d6d8b792bb90041edc12eac35faf83030994, < a9515ff4fb142b690a0d2b58782b15903b990dba | 4.15

3 vendors · 125 products

References

9 links