Security readout for executives and security teams
Plain-English summary
CVE-2022-50053 is a Linux kernel iavf driver flaw that can hang systems during failed virtual network function resets. The business risk is availability: affected servers using Intel iavf virtual functions could become stuck or panic during SR-IOV operations. The sources do not show active exploitation or remote attack details.
Executive priority
Treat as a targeted availability issue. Prioritize remediation for virtualization or network-heavy Linux hosts using iavf VFs, but do not escalate as internet-wide critical based on current evidence.
Technical view
The iavf reset error path incorrectly called iavf_close, which could double-call napi_disable and deadlock. Removal of a VF could then block on crit_lock, leaving iavf_remove stuck. The documented failure involves rapid VF resets and failed VF mailbox setup, leading to hung tasks and possible kernel panic.
Likely exposure
Exposure is most likely on Linux systems using the iavf driver for SR-IOV virtual functions, especially virtualization hosts or appliances managing Intel Ethernet VFs. General Linux systems not using iavf or VF reset/removal paths appear less exposed based on the provided sources.
Exploitation context
CISA KEV status is false in the bundle, and no cited source states active exploitation. The provided kernel text describes a failure during rapid VF resets and mailbox setup failure. Attacker prerequisites, remote exploitability, and exploit availability are not established by the supplied evidence.
Researcher notes
The key behavioral change is replacing iavf_close with iavf_disable_vf on reset failure so invalid resources are cleaned without deadlocking. Evidence is incomplete for scoring: no CVSS, CWE, or confirmed exploitation is provided in the bundle.
Mitigation direction
- Check Linux distribution advisories for CVE-2022-50053 and iavf backports.
- Update affected kernels to versions containing the referenced stable fixes.
- Prioritize hosts using SR-IOV, Intel VFs, or iavf in production.
- Schedule maintenance because remediation may require kernel updates and reboots.
- Monitor vendor guidance if running custom or vendor-patched kernels.
Validation and detection
- Inventory systems using the iavf driver and SR-IOV virtual functions.
- Confirm kernel packages include one of the referenced stable fixes or equivalent backport.
- Review logs for iavf adminq failures, blocked iavf_remove, hung tasks, or panics.
- Test VF reset and removal workflows in staging after updating.
- Document any exposed production hosts pending reboot or kernel rollout.
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-2022-50053 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/743dc4377bbac06a6fe44c3c5baf75a49439678aCVE reference, Linux
- https://git.kernel.org/stable/c/0828e27971f18ea317710acb228afe6e72606082CVE reference, Linux
- https://git.kernel.org/stable/c/31071173771e079f7bc08dacd61e0db913262fbfCVE 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.