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CVE Record

CVE-2022-49025: net/mlx5e: Fix use-after-free when reverting termination table

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix use-after-free when reverting termination table When having multiple dests with termination tables and second one or afterwards fails the driver reverts usage of term tables but doesn't reset the assignment in attr->dests[num_vport_dests].termtbl which case a use-after-free when releasing the rule. Fix by resetting the assignment of termtbl to null.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-49025 is a Linux kernel flaw in the mlx5e network driver. Under a specific error path, the driver can keep a pointer to freed memory, creating a use-after-free condition when a rule is later released. Public sources do not provide CVSS, impact detail, or evidence of exploitation.

Executive priority

Medium operational priority, with urgency driven by whether critical systems use mlx5e networking. Patch through normal kernel maintenance unless vendor advisories or local exposure analysis raise severity.

Technical view

The bug is in net/mlx5e termination table rollback. If multiple destinations use termination tables and a later destination fails, rollback frees the termination table but leaves attr->dests[num_vport_dests].termtbl assigned. Releasing the rule can then dereference freed memory. The fix resets that termtbl assignment to null.

Likely exposure

Exposure appears limited to Linux kernels containing the affected mlx5e driver code path, especially systems using Mellanox mlx5 networking features. The source bundle lists Linux as affected and provides stable kernel fix commits, but it does not map exposure to distributions, packages, or configurations.

Exploitation context

The CVE is not listed as KEV in the provided bundle. No cited source states active exploitation, public exploit availability, or remote exploitability. Treat this as a kernel memory-safety issue requiring patch tracking, not as confirmed exploited activity.

Researcher notes

Evidence is sparse: no CVSS, CWE, distro matrix, exploit status, or detailed impact is provided. Analysis should stay tied to the Linux mlx5e rollback use-after-free and the stable commits until vendor advisories add package-level details.

Mitigation direction

  • Apply a vendor-supported Linux kernel update that includes the referenced stable fixes.
  • Prioritize systems using mlx5e or Mellanox mlx5 networking hardware and features.
  • Check Linux distribution advisories for package-specific fixed versions.
  • Avoid relying on unsupported kernel branches for security-sensitive network hosts.
  • Track vendor guidance if immediate patching is not operationally possible.

Validation and detection

  • Inventory Linux hosts for mlx5e driver usage and kernel versions.
  • Compare installed kernel builds with distribution advisories and stable fix commits.
  • Confirm patched hosts run an updated kernel after reboot.
  • Review network/security appliances separately if they embed Linux kernels.
  • Document any unpatched exposed systems and compensating operational constraints.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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-2022-49025 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
1ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux10caabdaad5ace85577a453da97d1f8d3b944427, 10caabdaad5ace85577a453da97d1f8d3b944427, 10caabdaad5ace85577a453da97d1f8d3b944427, 10caabdaad5ace85577a453da97d1f8d3b944427, 10caabdaad5ace85577a453da97d1f8d3b944427unaffected
LinuxLinux5.3, 0, 5.4.226, 5.10.158, 5.15.82, 6.0.12, 6.1affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.