Unknown

CVE-2023-54232 — m68k: Only force 030 bus error if PC not in exception table

In the Linux kernel, the following vulnerability has been resolved: m68k: Only force 030 bus error if PC not in exception table __get_kernel_nofault() does copy data in supervisor mode when forcing a task backtrace log through /proc/sysrq_trigger. This is expected cause a bus error exception on e.g. NULL pointer dereferencing when logging a kernel task has no workqueue associated. This bus error ought to be ignored. Our 030 bus error handler is ill equipped to deal with this: Whenever ssw indicates a kernel mode access on a data fault, we don't even attempt to handle the fault and instead always send a SEGV signal (or panic). As a result, the check for exception handling at the fault PC (buried in send_sig_fault() which gets called from do_page_fault() eventually) is never used. In contrast, both 040 and 060 access error handlers do not care whether a fault happened on supervisor mode access, and will call do_page_fault() on those, ultimately honoring the exception table. Add a check in bus_error030 to call do_page_fault() in case we do have an entry for the fault PC in our exception table. I had attempted a fix for this earlier in 2019 that did rely on testing pagefault_disabled() (see link below) to achieve the same thing, but this patch should be more generic. Tested on 030 Atari Falcon.

Published Dec 30, 2025 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+2

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.21%

ahead of 11% of scored CVEs · Oct 14, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ f2325ecebc5b7988fd49968bd3a660fd1594dc84 and < 1a6059f5ed57f48edfe7159404ff7d538d9d405b≥ f2325ecebc5b7988fd49968bd3a660fd1594dc84 and < f55cb52ec98b22125f5bda36391edb8894f7e8cf≥ f2325ecebc5b7988fd49968bd3a660fd1594dc84 and < 2100e374251a8fc00cce1916cfc50f3cb652cbe3≥ f2325ecebc5b7988fd49968bd3a660fd1594dc84 and < df1da53a7e98f0b2a0eb2241c154f148f2f2c1d8≥ f2325ecebc5b7988fd49968bd3a660fd1594dc84 and < 8bf8d5dade4c5e1d8a2386f29253ed28b5d87735≥ f2325ecebc5b7988fd49968bd3a660fd1594dc84 and < 54fa25ffab2b700df5abd58c136d64a912c53953≥ f2325ecebc5b7988fd49968bd3a660fd1594dc84 and < ec15405b80fc15ffc87a23d01378ae061c1aba07≥ f2325ecebc5b7988fd49968bd3a660fd1594dc84 and < e36a82bebbf7da814530d5a179bef9df5934b717 and 1 more version 2.6.18	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.21%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 13, 2026
Affected products added · linux/linux
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
2025
CVE published
Dec 30, 2025 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

8 on the record

git.kernel.org/stable/c/2100e374251a8fc00cce1916cfc50f3cb652cbe3
NIST National Vulnerability Database
git.kernel.org/stable/c/df1da53a7e98f0b2a0eb2241c154f148f2f2c1d8
NIST National Vulnerability Database
git.kernel.org/stable/c/e36a82bebbf7da814530d5a179bef9df5934b717
NIST National Vulnerability Database
git.kernel.org/stable/c/54fa25ffab2b700df5abd58c136d64a912c53953
NIST National Vulnerability Database
git.kernel.org/stable/c/ec15405b80fc15ffc87a23d01378ae061c1aba07
NIST National Vulnerability Database
git.kernel.org/stable/c/1a6059f5ed57f48edfe7159404ff7d538d9d405b
NIST National Vulnerability Database
git.kernel.org/stable/c/f55cb52ec98b22125f5bda36391edb8894f7e8cf
NIST National Vulnerability Database
git.kernel.org/stable/c/8bf8d5dade4c5e1d8a2386f29253ed28b5d87735
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 7h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 7h
Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2023-54232 is "m68k: Only force 030 bus error if PC not in exception table", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.21% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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