REMAP cmd of SVM driver can be used to remap read only memory as read-write, then cause read only memory/file modified.
Priority LOW 39CWE-749Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
REMAP cmd of SVM driver can be used to remap read only memory as read-write, then cause read only memory/file modified.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00486 42nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | kernel | <=4.19.90-2211.4.0.0177, <=5.10.0-60.67.0.92 | — | No fix listed | CNA |
- kernel Vendor— Affected <=4.19.90-2211.4.0.0177, <=5.10.0-60.67.0.92 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:openatom:openeuler_kernel:*:*:*:*:*:*:*:* | up to 4.19.90-2211.4.0.0177; 5.0 – 5.10.0-60.67.0.92 | Vulnerable | Openatom |
- cpe:2.3:o:openatom:openeuler_kernel:*:*:*:*:*:*:*:* Versions up to 4.19.90-2211.4.0.0177; 5.0 – 5.10.0-60.67.0.92 Vulnerable ·Openatom
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-33639
- 2026-10-03 Alias added: GHSA-wq34-qch7-hr2g
Sources
- CVE-2021-33639 · CVE Program
- CVE-2021-33639 · NVD
- FIRST EPSS
- GHSA-wq34-qch7-hr2g · GitHub Advisory Database · CC BY 4.0
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