Security readout for executives and security teams
Plain-English summary
CVE-2022-50160 is a Linux kernel fix for a reference-count leak in the MTD maps ap_flash_init path. The public record does not provide CVSS, a named attack path, or reported exploitation. Treat it as a kernel maintenance exposure, mainly relevant where affected Linux kernels and flash/MTD device-tree code are present.
Executive priority
Handle through normal kernel patch management unless local validation shows the affected flash/MTD path is present on critical appliances. There is no source-backed evidence of active exploitation or remote compromise, but kernel defects should not be ignored in long-lived infrastructure or firmware.
Technical view
The issue is that of_find_matching_node() increments a device-tree node reference count, but ap_flash_init did not release it with of_node_put(). The stable commits add the missing release to prevent a refcount leak. The record lists Linux as affected and provides multiple stable branch fix commits, but no CWE or CVSS vector.
Likely exposure
Exposure is most likely on Linux systems using affected kernel versions and the relevant MTD maps code path. Embedded, appliance, or platform firmware builds with flash mapping support are more plausible targets than generic userland applications. Distribution package status is not provided in the bundle.
Exploitation context
The bundle does not report active exploitation, and KEV status is false. It also does not describe an external exploit primitive. The documented flaw is a kernel reference-count leak, so impact and practical triggerability should be validated against the deployed kernel configuration and platform code path.
Researcher notes
The record is technically narrow: a missing of_node_put() after of_find_matching_node(). Public metadata lacks CVSS, CWE, exploitability notes, and distro mapping. Avoid extrapolating beyond a refcount leak without analyzing the exact kernel branch, configuration, and platform device-tree behavior.
Mitigation direction
- Check vendor kernel advisories for CVE-2022-50160 coverage.
- Update to a kernel package containing the referenced stable fix.
- For custom kernels, backport the matching stable commit for your branch.
- Prioritize embedded and appliance firmware using Linux MTD maps.
- Track vendor guidance if no package fix is available.
Validation and detection
- Inventory deployed Linux kernel versions and custom firmware branches.
- Check whether MTD maps and ap_flash_init are built or reachable.
- Confirm source or changelog includes the relevant stable fix commit.
- Review vendor advisories for distro-specific affected and fixed versions.
- Monitor kernel maintenance backlog for unfixed affected branches.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit 995fb2874bb5696357846a91e59181c600e6aac8
- Linux stable commit d10855876a6f47add6ff621cef25cc0171dac162
- Linux stable commit 80b1465b2ae81ebb59bbe62bcb7a7f7d4e9ece6f
- Linux stable commit 941ef6997f9db704fe4fd62fc01e420fdd5048b2
- Linux stable commit d5730780e9ea84e5476752a47c749036c6a74af5
- Linux stable commit a74322d4b897ddc268b340c4a397f6066c2f945d
- Linux stable commit babd7b0124650ab71a6487e38588b8659b3aa2dc
- Linux stable commit 77087a04c8fd554134bddcb8a9ff87b21f357926
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-2022-50160 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.
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.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/995fb2874bb5696357846a91e59181c600e6aac8CVE reference, Linux
- https://git.kernel.org/stable/c/d10855876a6f47add6ff621cef25cc0171dac162CVE reference, Linux
- https://git.kernel.org/stable/c/80b1465b2ae81ebb59bbe62bcb7a7f7d4e9ece6fCVE reference, Linux
- https://git.kernel.org/stable/c/941ef6997f9db704fe4fd62fc01e420fdd5048b2CVE reference, Linux
- https://git.kernel.org/stable/c/d5730780e9ea84e5476752a47c749036c6a74af5CVE reference, Linux
- https://git.kernel.org/stable/c/a74322d4b897ddc268b340c4a397f6066c2f945dCVE reference, Linux
- https://git.kernel.org/stable/c/babd7b0124650ab71a6487e38588b8659b3aa2dcCVE reference, Linux
- https://git.kernel.org/stable/c/77087a04c8fd554134bddcb8a9ff87b21f357926CVE reference, Linux
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.