In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition.
In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel
- BDU:2022-00836
- ALSA-2022:0825
- DLA-2843-1
- openSUSE-SU-2022:0366-1
- openSUSE-SU-2022:1037-1
- openSUSE-SU-2022:1039-1
- RHSA-2022:0590
- RHSA-2022:0592
- RHSA-2022:0620
- RHSA-2022:0622
- RHSA-2022:0629
- RHSA-2022:0636
- RHSA-2022:0771
- RHSA-2022:0772
- RHSA-2022:0777
- RHSA-2022:0819
- RHSA-2022:0823
- RHSA-2022:0825
- RHSA-2022:0841
- RHSA-2022:0849
- Published
- Dec 15, 2021
- Updated
- Jun 16, 2026
- EPSS
- 0.8% · 56th percentile
- CWE
- CWE-362
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Report tools
Action score
55
Plan
Add it to your regular patch cycle.
- CVSS
- 25 / 40 · 6.4 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 0 / 30 · 0.8%
CISA SSVC decision
- Exploitation
- active
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on May 23, 2022. That signals real attacks, not theory.
Remediation deadline for government agencies: Jun 13, 2022.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| android | cpe:2.3:o:google:android | |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux9.0
- google androidall versions
- linux linux kernelup to 5.13 inclusive
- linux linux kernel5.14
Versions reported by the vendor
Affected version ranges reported by the assigning authority (google_android). Independent of NVD's CPE analysis and usually ahead of it.
n/a Android
- Android kernelaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | kernel-tools-libs-devel | before 4.18.0-348.20.1.el8_5 | 4.18.0-348.20.1.el8_5 |
| Debian:12 | linux | before 5.14.6-1 | 5.14.6-1 |
| Debian:9 | linux | before 4.9.290-1 | 4.9.290-1 |
| openSUSE:Leap 15.3 | dtb-aarch64 | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-64kb | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-azure | before 5.3.18-150300.38.50.1 | 5.3.18-150300.38.50.1 |
| openSUSE:Leap 15.3 | kernel-debug | before 4.12.14-197.105.1 | 4.12.14-197.105.1 |
| openSUSE:Leap 15.3 | kernel-debug | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-default | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-default | before 4.12.14-197.105.1 | 4.12.14-197.105.1 |
| openSUSE:Leap 15.3 | kernel-default-base | before 5.3.18-150300.59.60.4.150300.18.37.5 | 5.3.18-150300.59.60.4.150300.18.37.5 |
| openSUSE:Leap 15.3 | kernel-docs | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-kvmsmall | before 4.12.14-197.105.1 | 4.12.14-197.105.1 |
| openSUSE:Leap 15.3 | kernel-kvmsmall | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-obs-build | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-obs-qa | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-preempt | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-source | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-source-azure | before 5.3.18-150300.38.50.1 | 5.3.18-150300.38.50.1 |
| openSUSE:Leap 15.3 | kernel-syms | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
| openSUSE:Leap 15.3 | kernel-syms-azure | before 5.3.18-150300.38.50.1 | 5.3.18-150300.38.50.1 |
| openSUSE:Leap 15.3 | kernel-vanilla | before 4.12.14-197.105.1 | 4.12.14-197.105.1 |
| openSUSE:Leap 15.3 | kernel-zfcpdump | before 4.12.14-197.105.1 | 4.12.14-197.105.1 |
| openSUSE:Leap 15.3 | kernel-zfcpdump | before 5.3.18-150300.59.60.4 | 5.3.18-150300.59.60.4 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| AlmaLinux:kernel-tools-libs-devel | 4.18.0-348.20.1.el8_5 · AlmaLinux:8 | Package registry (OSV) |
| Debian:linux | 5.14.6-1 · Debian:12 | Package registry (OSV) |
| openSUSE:dtb-aarch64 | 5.3.18-150300.59.60.4 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-64kb | 5.3.18-150300.59.60.4 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-azure | 5.3.18-150300.38.50.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-debug | 4.12.14-197.105.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-default | 4.12.14-197.105.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-default-base | 5.3.18-150300.59.60.4.150300.18.37.5 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-docs | 5.3.18-150300.59.60.4 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-kvmsmall | 4.12.14-197.105.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-source-azure | 5.3.18-150300.38.50.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-syms-azure | 5.3.18-150300.38.50.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-vanilla | 4.12.14-197.105.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| openSUSE:kernel-zfcpdump | 4.12.14-197.105.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_46_1 | 0:1-9.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_46_1-debuginfo | 0:1-9.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_46_1-debugsource | 0:1-9.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_47_1 | 0:1-9.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_47_1-debuginfo | 0:1-9.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_47_1-debugsource | 0:1-9.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_51_1 | 0:1-6.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_51_1-debuginfo | 0:1-6.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_51_1-debugsource | 0:1-6.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_56_1 | 0:1-5.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_56_1-debuginfo | 0:1-5.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Red Hat:kpatch-patch-4_18_0-193_56_1-debugsource | 0:1-5.el8_2 · Red Hat:rhel_eus:8.2::baseos | Package registry (OSV) |
| Rocky Linux:kernel | 0:4.18.0-348.20.1.el8_5 · Rocky Linux:8 | Package registry (OSV) |
| Rocky Linux:kernel-rt | 0:4.18.0-348.20.1.rt7.150.el8_5 · Rocky Linux:8 | Package registry (OSV) |
| SUSE:kernel-azure | 4.12.14-16.85.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| SUSE:kernel-default | 4.12.14-122.106.1 · SUSE:Linux Enterprise High Availability Extension 12 SP5 | Package registry (OSV) |
+10
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- CISA KEV+158 d
- TodaySep 29, 2026+1749 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- Administrator privileges are required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- source.android.com/security/bulletin/2021-11-01
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-0920
Vendor advisories and official records. Exploit/PoC links are deliberately left out.