Security readout for executives and security teams
Plain-English summary
A Linux kernel memory-safety flaw can let a low-privileged local user corrupt kernel state. Successful exploitation may grant elevated privileges or crash the system. Because CISA lists the vulnerability as known exploited, affected systems should be investigated and updated promptly, especially where untrusted users or compromised applications can execute locally.
Executive priority
Treat as an urgent patching and exposure-validation item because CISA reports known exploitation and successful abuse could provide full system privileges. Prioritize internet-facing workloads and systems permitting untrusted local execution, while recognizing that this flaw still requires an initial local foothold.
Technical view
CVE-2022-0995 is a CWE-787 out-of-bounds write in the Linux kernel watch_queue event-notification subsystem. It requires local access with low privileges and no user interaction. The supplied CVSS 3.1 score is 7.8, reflecting potential high impact to confidentiality, integrity, and availability. The bundle identifies Linux kernel 5.17-rc8, but does not establish the complete affected-version range.
Likely exposure
Exposure requires an affected Linux kernel and local low-privileged code execution. Multi-user hosts, development systems, and workloads where attackers could first compromise an application are higher concern. The supplied evidence names kernel 5.17-rc8; distribution packages, backports, appliances, and other kernel versions require vendor-specific confirmation.
Exploitation context
CISA's Known Exploited Vulnerabilities listing supports active exploitation in the wild. The vulnerability is not described as remotely exploitable by itself; an attacker must already execute code locally with low privileges. Public-source evidence supplied here does not quantify exploitation prevalence or identify targeted sectors.
Researcher notes
The vector is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The cited upstream commit is the strongest supplied remediation reference. Exact introduction points, all vulnerable stable branches, distribution backport status, exploit reliability, and observed campaign details are not established by this bundle and should not be inferred.
Mitigation direction
- Prioritize vendor-supported kernel updates that incorporate the cited upstream fix.
- Review Linux distribution and appliance advisories for affected package versions and backports.
- Restrict untrusted local code execution until affected systems are remediated.
- Isolate high-value systems that cannot be updated promptly and increase monitoring.
Validation and detection
- Inventory running kernel and installed kernel package versions across Linux systems.
- Check each version against its distribution or appliance vendor's CVE-2022-0995 guidance.
- Confirm the installed update incorporates upstream commit 93ce93587d36493f2f86921fa79921b3cba63fbb.
- Verify systems booted into the remediated kernel after updating.
- Review telemetry for unexpected privilege escalation or kernel crashes before remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-0995 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2022-0995 added to CISA KEV
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-08-26T00:00:00.000Z: CVE-2022-0995 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=2063786CVE reference, redhat · x_refsource_MISC
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93ce93587d36493f2f86921fa79921b3cba63fbbCVE reference, redhat · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220429-0001/CVE reference, redhat · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0995CVE reference, CISA-ADP · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.