Security readout for executives and security teams
Plain-English summary
This is a Linux kernel availability flaw fixed in 6.1.2. A local low-privileged user could trigger a kernel error path during module decompression and potentially crash the system. The business impact is service disruption, not data theft or privilege escalation based on the supplied CVSS vector.
Executive priority
Treat as a moderate patching priority. Address during normal kernel maintenance, sooner on shared systems where local users or workloads are less trusted.
Technical view
kernel/module/decompress.c incorrectly expected module_get_next_page to return NULL on error, but the function returns an error pointer. The CVE maps to CWE-476 and has CVSS 3.1 score 5.5 with local, low-complexity, low-privilege attack requirements and high availability impact.
Likely exposure
Exposure is likely limited to Linux systems running affected kernels before 6.1.2 or vendor kernels lacking the referenced upstream fix. Internet-facing status alone is not the main factor because the CVSS vector is local.
Exploitation context
The source bundle does not show CISA KEV listing or public evidence of active exploitation. The risk is operational availability from a local, low-privileged context, not confirmed remote compromise.
Researcher notes
The key implementation issue is error-pointer handling in the module decompression path. The public sources identify the upstream commit and 6.1.2 changelog, but the supplied affected-product metadata is incomplete and lists no CPEs.
Mitigation direction
- Update to Linux kernel 6.1.2 or a vendor kernel containing the upstream fix.
- Check distribution advisories for backported fixes before relying only on version numbers.
- Prioritize multi-user servers and workloads that allow untrusted local access.
- Monitor vendor guidance if running custom or long-term-support kernels.
Validation and detection
- Inventory running Linux kernel versions across affected environments.
- Confirm vendor packages include the upstream module decompression fix.
- Review kernel changelog or package notes for CVE-2023-22997 coverage.
- Verify vulnerability scanner findings against distro backport documentation.
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-476: 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-2023-22997 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.
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:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source materials
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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.