Information disclosure in Android kernel hwcrypto-kdn driver
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269.
Summary
Google Android kernel contains an information disclosure flaw in kdn_set_sysregs_prot of hwcrypto-kdn.c, caused by a logic error. A local attacker with System execution privileges can read information they should not access, and no user interaction is needed. The weakness is classified as CWE-269 (Improper Privilege Management).
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
In kdn_set_sysregs_prot of hwcrypto-kdn.c, there is a possible information disclosure due to a logic error in the code. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Android.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-06 Threatist record created from CVE-2026-55307
- 2026-10-07 Alias added: GHSA-37v5-p4pc-4jwq
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Sources
- CVE-2026-55307 · CVE Program
- CVE-2026-55307 · NVD
- FIRST EPSS
- GHSA-37v5-p4pc-4jwq · GitHub Advisory Database · CC BY 4.0
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