Security readout for executives and security teams
Plain-English summary
This is a Linux kernel driver stability flaw in the TI AM65 CPSW Ethernet driver. When the module is removed while the first slave link is up, the kernel can crash. The available sources show a resolved kernel bug, not evidence of remote compromise or active exploitation.
Executive priority
Treat as a targeted operational stability issue. It matters most for embedded products and appliances using affected TI Ethernet hardware, where a kernel crash can disrupt service. It is not supported by sources as an internet-scale emergency.
Technical view
The fix changes cleanup order in am65-cpsw so phylink remains valid until network devices are cleaned up. The reported failure is a kernel paging fault during module unload, reaching phy_stop through phylink_stop and am65_cpsw_nuss_ndo_slave_stop.
Likely exposure
Exposure appears limited to Linux systems using the TI AM65 CPSW NUSS Ethernet driver, including TI AM625/AM65-class embedded platforms. The source lists Linux 5.18, 6.0.9, and 6.1 as affected; one version entry is ambiguous.
Exploitation context
No KEV listing, public exploitation evidence, CVSS score, or CWE is provided. The observed trigger is module removal while a slave link is up, suggesting operational availability impact rather than proven remote exploitation.
Researcher notes
The evidence is a kernel bugfix and crash trace. The affected version data is sparse, and no attack prerequisites beyond the module unload condition are documented. Avoid assuming privilege boundaries or remote reachability without vendor-specific context.
Mitigation direction
- Check vendor kernel advisories for CVE-2022-49847 applicability.
- Update to a kernel build containing the referenced stable commits.
- Avoid unloading ti_am65_cpsw_nuss on affected systems while links are active.
- Prioritize embedded or appliance fleets using TI AM65 CPSW Ethernet hardware.
Validation and detection
- Inventory kernels and hardware using the TI AM65 CPSW NUSS driver.
- Confirm whether vendor kernel sources include the referenced cleanup-order fix.
- Review logs for kernel oops events during ti_am65_cpsw_nuss module removal.
- Validate remediation in a lab before changing embedded production images.
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
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CVE-2022-49847 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/442fd1bfe599bc54d118775e9e1a4fe913e4b369CVE reference, Linux
- https://git.kernel.org/stable/c/1a0c016a4831ea29be09bbc8162d4a2a0690b4b8CVE 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.