CVE intelligence and bounded remediation
CVE-2019-3896 — A double-free can happen in idr_remove_all() in lib/idr.c in the Linux kernel 2.6 branch
High
CVSS 7.8
A double-free can happen in idr_remove_all() in lib/idr.c in the Linux kernel 2.6 branch. An unprivileged local attacker can use this flaw for a privilege escalation or for a system crash and a denial of service (DoS).
- Severity
- High
- CVSS
- 7.8 (3.0)
- Published
- 2019-06-19
- CISA KEV
- Not currently listed
- Ecosystem
- linux/kernel
- Weaknesses
- CWE-416, CWE-415
Affected products
- linux / linux_kernel
- redhat / enterprise_linux_desktop / 6.0
- redhat / enterprise_linux_server / 6.0
- redhat / enterprise_linux_server_aus / 6.5
- redhat / enterprise_linux_server_aus / 6.6
- redhat / enterprise_linux_workstation / 6.0
Matched remediation archetype
Buffer bounds, memory safety, and memory corruption
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
- Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
- Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.
Remediate safely
- Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
- Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
- Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.
Authoritative sources
Complete CVE record and remediation plan
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