CVE-2023-0386 kev in the critical feed json
A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linu…
published 2023-03-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12447
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2025-06-17
- epss
- 7.9%
- EPSS 7.9% chance of exploitation in 30 days, percentile 94%
- public exploits
- 1
- Metasploit
Summary
A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.
Patch / fix
cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- linux linux_kernel 5.15.91, 6.1.9
- linux Debian 14, Debian 13, Debian 12 6.1.11-1
debian advisories DEBIAN-CVE-2023-0386
- linux Ubuntu 22.04 LTS 5.15.0-70.77
- linux-aws Ubuntu 22.04 LTS 5.15.0-1034.38
- linux-gcp Ubuntu 22.04 LTS 5.15.0-1032.40
- linux-gke Ubuntu 22.04 LTS 5.15.0-1031.36
- linux-ibm Ubuntu 22.04 LTS 5.15.0-1028.31
- linux-kvm Ubuntu 22.04 LTS 5.15.0-1031.36
- linux-azure Ubuntu 22.04 LTS 5.15.0-1036.43
- linux-gkeop Ubuntu 22.04 LTS 5.15.0-1018.23
ubuntu advisories UBUNTU-CVE-2023-0386
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kpatch-patch-4_18_0-425_3_1 RHEL 8 1-6.el8
- kpatch-patch-4_18_0-425_10_1 RHEL 8 1-4.el8_7
- kpatch-patch-4_18_0-425_13_1 RHEL 8 1-2.el8_7
- redhat-virtualization-host rhev hypervisor 4.4 4.5.3-202304051438_8.6
- redhat-virtualization-host-image-update rhev hypervisor 4.4 4.5.3-202304051438_8.6
- kernel RHEL 9 5.14.0-162.23.1.el9_1
- perf RHEL 9 5.14.0-162.23.1.el9_1
- bpftool RHEL 9 5.14.0-162.23.1.el9_1
red hat advisories RHSA-2023:1984RHSA-2023:1970RHSA-2023:1659RHSA-2023:1677RHSA-2023:1703RHSA-2023:1566
- kernel-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
- kernel-syms-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
- kernel-rt_debug Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
- kernel-source-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
- kernel-rt SLE Micro 5.4, SLE Micro 5.3, Real Time Module 15 SP4 +2 more 5.14.21-150400.15.28.2
- kernel-syms-rt Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.28.1
- kernel-rt_debug Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.28.2
- kernel-source-rt Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.28.1
suse advisories SUSE-SU-2023:2809-1SUSE-SU-2023:2468-1SUSE-SU-2023:2459-1SUSE-SU-2023:2455-1SUSE-SU-2023:2443-1SUSE-SU-2023:2431-1
- kernel-rt AlmaLinux 9 5.14.0-162.23.1.rt21.186.el9_1
- kernel-rt-kvm AlmaLinux 9 5.14.0-162.23.1.rt21.186.el9_1
- kernel-rt-core AlmaLinux 9 5.14.0-162.23.1.rt21.186.el9_1
- kernel-rt-modules AlmaLinux 9 5.14.0-162.23.1.rt21.186.el9_1
- kernel-rt-debug-kvm AlmaLinux 9 5.14.0-162.23.1.rt21.186.el9_1
- kernel-rt-debug-core AlmaLinux 9 5.14.0-162.23.1.rt21.186.el9_1
- kernel-rt-debug-modules AlmaLinux 9 5.14.0-162.23.1.rt21.186.el9_1
- kernel-rt-modules-extra AlmaLinux 9 5.14.0-162.23.1.rt21.186.el9_1
almalinux advisories ALSA-2023:1691ALSA-2023:1703ALSA-2023:1566ALSA-2023:1584
- kernel Rocky Linux 8 4.18.0-425.19.2.el8_7.cloud
- kernel-rt Rocky Linux 8 4.18.0-425.19.2.rt7.230.el8_7
- kernel Rocky Linux 8 4.18.0-425.19.2.el8_7
rocky linux advisories RXSA-2023:1566RLSA-2023:1584RLSA-2023:1566
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2023-0386 updated cvss 7.0
kernel: FUSE filesystem low-privileged user privileges escalation
-
Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-425.19.2.el8_7, kernel-debuginfo-common-aarch64 4.18.0-425.19.2.el8_7, kernel-debuginfo-common-ppc64le 4.18.0-425.19.2.el8_7fixed: vendor fix RHSA-2023:1566
-
Red Hat CodeReady Linux Builder (v. 9) kernel-debuginfo-common-s390x 5.14.0-162.23.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.23.1.el9_1, kernel-debuginfo-common-aarch64 5.14.0-162.23.1.el9_1, kernel-debuginfo-common-ppc64le 5.14.0-162.23.1.el9_1fixed: vendor fix RHSA-2023:1703
-
Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.51.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.51.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.51.1.el8_6fixed: vendor fix RHSA-2023:1554
-
Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.53.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.53.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.53.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.53.1.el9_0fixed: vendor fix RHSA-2023:1970
-
Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-162.23.1.el9_1, kernel-devel-matched 5.14.0-162.23.1.el9_1, kernel-debug-devel-matched 5.14.0-162.23.1.el9_1, kernel-debuginfo-common-s390x 5.14.0-162.23.1.el9_1, kernel-zfcpdump-devel-matched 5.14.0-162.23.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.23.1.el9_1, +2 morefixed: vendor fix RHSA-2023:1703
-
Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.53.1.el9_0, kernel-devel-matched 5.14.0-70.53.1.el9_0, kernel-debug-devel-matched 5.14.0-70.53.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.53.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.53.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.53.1.el9_0, +2 morefixed: vendor fix RHSA-2023:1970
-
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-425.19.2.el8_7, kernel 4.18.0-425.19.2.el8_7, bpftool 4.18.0-425.19.2.el8_7, kernel-core 4.18.0-425.19.2.el8_7, kernel-tools 4.18.0-425.19.2.el8_7, python3-perf 4.18.0-425.19.2.el8_7, +18 morefixed: vendor fix RHSA-2023:1566
-
Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-162.23.1.el9_1, bpftool 5.14.0-162.23.1.el9_1, kernel-core 5.14.0-162.23.1.el9_1, kernel-tools 5.14.0-162.23.1.el9_1, python3-perf 5.14.0-162.23.1.el9_1, kernel-modules 5.14.0-162.23.1.el9_1, +18 morefixed: vendor fix RHSA-2023:1703
show 10 moreshow fewer
-
Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.51.1.el8_6, kernel 4.18.0-372.51.1.el8_6, bpftool 4.18.0-372.51.1.el8_6, kernel-core 4.18.0-372.51.1.el8_6, kernel-tools 4.18.0-372.51.1.el8_6, python3-perf 4.18.0-372.51.1.el8_6, +21 morefixed: vendor fix RHSA-2023:1554
-
Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.53.1.el9_0, bpftool 5.14.0-70.53.1.el9_0, kernel-core 5.14.0-70.53.1.el9_0, kernel-tools 5.14.0-70.53.1.el9_0, python3-perf 5.14.0-70.53.1.el9_0, kernel-modules 5.14.0-70.53.1.el9_0, +19 morefixed: vendor fix RHSA-2023:1970
-
Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-core 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-modules 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-debug-core 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-debug-modules 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-modules-extra 4.18.0-425.19.2.rt7.230.el8_7, +2 morefixed: vendor fix RHSA-2023:1584
-
Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-core 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-modules 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-debug-core 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-debug-modules 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-modules-extra 5.14.0-162.23.1.rt21.186.el9_1, +2 morefixed: vendor fix RHSA-2023:1691
-
Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-core 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-modules 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-debug-core 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-debug-modules 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-modules-extra 5.14.0-70.53.1.rt21.124.el9_0, +2 morefixed: vendor fix RHSA-2023:1980
-
Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-kvm 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-core 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-modules 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-debug-kvm 4.18.0-425.19.2.rt7.230.el8_7, kernel-rt-debug-core 4.18.0-425.19.2.rt7.230.el8_7, +4 morefixed: vendor fix RHSA-2023:1584
-
Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-kvm 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-core 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-modules 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-debug-kvm 5.14.0-162.23.1.rt21.186.el9_1, kernel-rt-debug-core 5.14.0-162.23.1.rt21.186.el9_1, +4 morefixed: vendor fix RHSA-2023:1691
-
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-kvm 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-core 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-modules 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-debug-kvm 5.14.0-70.53.1.rt21.124.el9_0, kernel-rt-debug-core 5.14.0-70.53.1.rt21.124.el9_0, +4 morefixed: vendor fix RHSA-2023:1980
-
Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.51.1.el8_6, redhat-virtualization-host 4.5.3-202304051438_8.6, kernel-debuginfo-common-x86_64 4.18.0-372.51.1.el8_6, redhat-virtualization-host-image-update 4.5.3-202304051438_8.6fixed: vendor fix RHSA-2023:1554
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat RHEL 8-based RHEV-H for RHEV 4 (build requirements) redhat-release-virtualization-host 4.5.3-6.el8ev, redhat-release-virtualization-host-content 4.5.3-6.el8ev, redhat-virtualization-host-image-update-placeholder 4.5.3-6.el8evnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Timeline
- Published
- First public exploit (Metasploit exploit/linux/local/cve_2023_0386_overlayfs_priv_esc)
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 16 mo ago
- Patch by
- 2025-07-08 (16 mo ago)
- Ransomware
- Not known
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Vendor, product
- Linux, Kernel
- CISA name
- Linux Kernel Improper Ownership Management Vulnerability
ATT&CK techniques
How it is exploited and what it leads to, in MITRE ATT&CK terms.
- T1055.012 Process Hollowing exploitation
- T1548.001 Setuid and Setgid exploitation
- T1543 Create or Modify System Process primary impact
- T1562 Impair Defenses secondary impact
kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 15 mo ago
Exploit prediction
7.88% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/linux/local/cve_2023_0386_overlayfs_priv_esc Local Privilege Escalation via CVE-2023-0386 metasploit exploit, excellent rank, 2023-03-22
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- n/a Kernel
Classification
- Weakness
-
- CWE-282 Improper Ownership Management
- Technology feeds
References
-
git.kernel.org
/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
broken-link, mailing-list, patch, vendor-advisory
-
debian.org
/security/2023/dsa-5402
vendor-advisory, third-party-advisory
-
security.netapp.com
/advisory/ntap-20230420-0004/
third-party-advisory
-
lists.debian.org
/debian-lts-announce/2023/06/msg00008.html
mailing-list, third-party-advisory
-
packetstormsecurity.com
/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
third-party-advisory
-
lists.debian.org
/debian-lts-announce/2024/06/msg00020.html
mailing-list, third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0386
government-resource, us-government-resource
Sources
- CVE List CVE-2023-0386
- NVD CVE-2023-0386
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.