Security readout for executives and security teams
Plain-English summary
CVE-2022-50746 is a Linux kernel flaw in EROFS filesystem handling. A malformed filesystem image can trigger a kernel use-after-free condition. Public sources describe a fuzzing discovery and a validation fix; they do not report active exploitation or provide a CVSS score.
Executive priority
Treat as a medium-priority Linux kernel maintenance issue unless your business processes untrusted EROFS images. No active exploitation is cited, but kernel memory-safety bugs can have high impact if reachable.
Technical view
The bug affects EROFS uncompressed pclusters. A fuzzed image had a logical length longer than its physical length, leading to a KASAN-reported use-after-free. The kernel fix validates extent length before use. Stable kernel commits are referenced as remediation points.
Likely exposure
Exposure is most likely on Linux systems with affected kernels that mount or process EROFS images, especially if images come from untrusted sources. Environments that never enable or use EROFS have reduced practical exposure, but should verify configuration and vendor status.
Exploitation context
Sources show syzkaller fuzzing identified the issue. There is no KEV listing and no cited evidence of active exploitation. Practical exploitation would require a malformed EROFS image to be handled by a vulnerable kernel path.
Researcher notes
Evidence is limited to the CVE record, syzkaller context in the description, and stable kernel commits. No CVSS, CWE, exploit status, or downstream distribution advisories were provided in the source bundle.
Mitigation direction
- Update to a vendor kernel containing the referenced stable EROFS fixes.
- Prioritize systems that mount EROFS images from external or untrusted sources.
- If immediate patching is unavailable, follow vendor guidance for limiting EROFS exposure.
Validation and detection
- Check whether running kernels fall within vendor-declared affected ranges.
- Verify kernel package changelogs include the referenced EROFS extent-length validation fix.
- Confirm whether EROFS support is enabled and used in the environment.
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.
CVE-2022-50746 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
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.