Security readout for executives and security teams
Plain-English summary
CVE-2022-50869 is a Linux kernel ntfs3 filesystem bug. On systems using 64K memory pages, NTFS log replay can copy more data than the allocated buffer, causing an out-of-bounds memory access. The public record does not provide CVSS, confirmed impact, or active exploitation evidence.
Executive priority
Treat as a targeted kernel maintenance issue, not an emergency internet-wide threat based on current evidence. Prioritize patching where Linux systems process NTFS media, disk images, or removable storage.
Technical view
The bug is in fs/ntfs3 read_log_page/log_read_rst handling. With 64K PAGE_SIZE, the first read_log_page call may use a 4K buffer while later memcpy operations use 64K-sized lengths, producing a slab-out-of-bounds condition. Kernel stable commits fix this by setting r_page to NULL in log_read_rst.
Likely exposure
Exposure appears limited to Linux kernels with ntfs3 support in the affected version ranges, especially builds using 64K PAGE_SIZE and mounting NTFS filesystems that trigger log replay. Distribution backports may change practical exposure.
Exploitation context
No cited source states active exploitation, public exploit availability, or inclusion in CISA KEV. The described trigger is kernel handling of NTFS log replay during filesystem mount/load, not a remote network path.
Researcher notes
The CVE record lacks CVSS, CWE, and detailed affected-version semantics. The available technical evidence is a kernel stable fix and call trace showing slab-out-of-bounds during ntfs3 log replay with 64K PAGE_SIZE.
Mitigation direction
- Apply Linux kernel updates containing the referenced stable fixes.
- Prioritize systems that mount NTFS volumes or removable media.
- Check distribution advisories for backported fixes and package-specific status.
- If updates are unavailable, follow vendor guidance for temporary risk reduction.
Validation and detection
- Inventory Linux systems running affected 5.15, 6.0, or 6.1 kernel lines.
- Confirm whether ntfs3 filesystem support is enabled or used.
- Check whether the kernel includes one of the referenced stable commits.
- Identify systems built with 64K PAGE_SIZE where applicable.
- Review kernel logs for ntfs3 mount failures or KASAN out-of-bounds reports.
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-2022-50869 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
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/ed686e7a26dd19ae6b46bb662f735acfa88ff7bcCVE reference
- https://git.kernel.org/stable/c/bf86a640a34947d92062996e1a75b9cd9d83dd19CVE reference
- https://git.kernel.org/stable/c/6d076293e5bffdf897ea5f975669206e09beed6aCVE reference
- https://git.kernel.org/stable/c/ecfbd57cf9c5ca225184ae266ce44ae473792132CVE reference
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.