Security readout for executives and security teams
Plain-English summary
CVE-2022-48842 is a Linux kernel race condition in the ice network driver. Under specific LAG or bonding changes, the driver can deadlock while handling an auxiliary RDMA-related device. The main business risk is service disruption on systems using the affected driver and configuration, not data theft or remote code execution based on the provided sources.
Executive priority
Treat this as a targeted operational resilience issue. Prioritize patching infrastructure where Intel ice-driven network interfaces support bonded or LAG configurations, because a deadlock can disrupt networking or require recovery action. It is not supported by the supplied evidence as a broad internet-exposed emergency.
Technical view
The issue is a lock-order race between ice_service_task invoking ice_plug_aux_dev and LAG notifier handling invoking ice_unplug_aux_dev under RTNL. The source describes a deadlock when an interface leaves and quickly re-enters LAG. The patch keeps ICE_FLAG_PLUG_AUX_DEV set during plugging and avoids unplugging while that operation may be running.
Likely exposure
Exposure appears limited to Linux systems using the ice driver with LAG or bonding behavior, especially where RDMA auxiliary device handling is present. The bundle lists Linux kernel commits and versions 5.15.24 and 5.16.10, but product/version evidence is incomplete and should be validated against kernel or distribution advisories.
Exploitation context
The provided source includes a local reproducer scenario involving repeated LAG membership changes. There is no KEV listing and no cited evidence of active exploitation. The evidence does not support remote exploitation; successful triggering appears to require privileges or automation able to alter network link or bonding configuration.
Researcher notes
The key condition is concurrent auxiliary device plug and unplug during rapid LAG state transitions. The source ties the regression to commit 5dbbbd01cbba and states the fix changes ICE_FLAG_PLUG_AUX_DEV handling. Severity, CVSS, CWE, and complete affected-version mapping are not provided in the bundle.
Mitigation direction
- Apply Linux kernel updates containing the referenced stable fixes.
- Check distribution kernel advisories for backported CVE-2022-48842 fixes.
- Prioritize hosts using ice interfaces with LAG, bonding, or RDMA features.
- Avoid unnecessary rapid LAG reconfiguration on suspected vulnerable hosts until patched.
- Follow vendor guidance if package-level fixed versions differ from upstream commits.
Validation and detection
- Inventory Linux hosts using the ice network driver.
- Identify hosts using bonding or LAG with ice-backed interfaces.
- Check kernel package versions against vendor advisories and referenced stable commits.
- Review kernel logs for ice_service_task deadlocks or tasks stuck in D state.
- Confirm patched systems no longer show the vulnerable code path.
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-2022-48842 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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SSVC decision data
Vulnerability timeline
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- 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.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/a9bbacc53d1f5ed8febbfdf31401d20e005f49efCVE reference, Linux
- https://git.kernel.org/stable/c/e1014fc5572375658fa421531cedb6e084f477dcCVE reference, Linux
- https://git.kernel.org/stable/c/5cb1ebdbc4342b1c2ce89516e19808d64417bdbcCVE reference, Linux
Products and packages named in the record
CWE details
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