Low severity · published Jul 1, 2021
CVE-2021-36086
The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list)
3.3
CVSS
0.6%
EPSS
No
On KEV
Description
The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list).
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
Active IQ Unified Manager · Netapp
All versions, or not specified · source: NVD
BO
Bootstrap OS · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
11.0 · source: NVD
FE
Fedora · Fedoraproject
35 · source: NVD
HF
H610c Firmware · Netapp
All versions, or not specified · source: NVD
HF
H610s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H615c Firmware · Netapp
All versions, or not specified · source: NVD
SE
Selinux · Selinux Project
before 3.3 · source: NVD
RR
RUGGEDCOM ROX MX5000 · Siemens
before V2.17.0 · source: CISA
RR
RUGGEDCOM ROX MX5000RE · Siemens
before V2.17.0 · source: CISA
RR
RUGGEDCOM ROX RX1400 · Siemens
before V2.17.0 · source: CISA
RR
RUGGEDCOM ROX RX1500 · Siemens
before V2.17.0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36086
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36086
Exploit
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177
Patch
https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6770fec2c8
Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaml
Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
Mailing List
https://lists.debian.org/debian-lts-announce/2024/10/msg00021.html
Third Party Advisory
https://security.netapp.com/advisory/ntap-20250207-0004/
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