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TI-2026-83994 Aliases CVE-2026-58829GHSA-x8j3-cc6h-2xqx

Use after free in Android kernel FUSE backing mmap enables memory corruption

Priority LOW 37CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

Android kernel's FUSE backing mmap code in fuse_backing_mmap of backing.c contains a use after free (CWE-416) that can corrupt memory. A local attacker with no additional execution privileges can escalate privileges, and no user interaction is needed.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

In fuse_backing_mmap of backing.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0011 1st 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
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

VendorProductAffected versionsFixed inStatusSource
GoogleAndroidAndroid kernel—No fix listedCNA
  • Android VendorGoogle Affected Android kernel Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:google:android:*:*:*:*:*:*:*:*——Google
  • cpe:2.3:o:google:android:*:*:*:*:*:*:*:* Versions — — ·Google

Remediation

The sources list no fixed version for Android.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-58829
  2. 2026-11-02 CVSS score added · CISA ADP
  3. 2026-11-02 Weakness changed · CISA ADP
  4. 2026-11-02 CISA SSVC decision points changed
  5. 2026-11-02 Alias added: GHSA-x8j3-cc6h-2xqx
  6. 2026-11-03 CISA SSVC decision points changed

References

Other 3

  • TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
See all 17247 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences