CVE-2023-54042: linux
CVSS: 7.8v3.1HighDeferred
AliasesUBUNTU-CVE-2023-54042DEBIAN-CVE-2023-54042
Published 24-12-2025Last modified 15-10-2026
Vulnerability summary
CVE-2023-54042 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 12 · Related 12Timeline
- 24-12-2025PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: Fix VAS mm use after free The refcount on mm is dropped before the coprocessor is detached.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.3Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NSourcesSingle source
High 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.14%
Chance of exploitation in the next 30 days
Percentile
3%
Versus all other CVEs
30-day change
0.00 pp
From 0.14% on 21-09-2026
21-09-202621-10-2026
EPSS score0.14%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu109 products
- linux< 5.15.0-86.96
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1047.52
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.1.52-1 | < 6.4.4-1
Linux1 product
- linux≥ 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85, < f7d92313002b2d543500cc417d8079aaed1fb0a8 | ≥ 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85, < 4e82f92c349ea603736ade1e814861c0182a55ad | ≥ 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85, < db8657fdd53c5e3069149d7f957cb60e63027bb2 | ≥ 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85, < 421cd1544480f2458042fe7f4913a2069c4d7251 | ≥ 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85, < b4bda59b47879cce38a6ec5a01cd3cac702b5331 | 5.14
3 vendors · 111 products
