powerpc/64s: Fix VAS mm use after free
Priority LOW 35Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0014 3rd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.15.121, 6.1.39, 6.3.13 +2Red Hat: 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.121, 6.1.39, 6.3.13, 6.4.4, 6.5
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2023-54042
- 2026-10-03 Alias added: GHSA-xm2r-rc6j-6pp4
- 2026-10-16 CISA SSVC decision points changed
References
Other 5
- https://git.kernel.org/stable/c/f7d92313002b2d543500cc417d8079aaed1fb0a8
- https://git.kernel.org/stable/c/4e82f92c349ea603736ade1e814861c0182a55ad
- https://git.kernel.org/stable/c/db8657fdd53c5e3069149d7f957cb60e63027bb2
- https://git.kernel.org/stable/c/421cd1544480f2458042fe7f4913a2069c4d7251
- https://git.kernel.org/stable/c/b4bda59b47879cce38a6ec5a01cd3cac702b5331
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Sources
- CVE-2023-54042 · CVE Program
- CVE-2023-54042 · NVD
- FIRST EPSS
- GHSA-xm2r-rc6j-6pp4 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-54042 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences