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CVE Record

CVE-2022-50065: virtio_net: fix memory leak inside XPD_TX with mergeable

In the Linux kernel, the following vulnerability has been resolved: virtio_net: fix memory leak inside XPD_TX with mergeable When we call xdp_convert_buff_to_frame() to get xdpf, if it returns NULL, we should check if xdp_page was allocated by xdp_linearize_page(). If it is newly allocated, it should be freed here alone. Just like any other "goto err_xdp".

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-50065 is a Linux kernel virtio_net memory leak in a specific XDP_TX error path with mergeable buffers. The source does not provide CVSS, CWE, or confirmed active exploitation. Business risk is mainly operational: affected systems could leak memory under the vulnerable condition until patched.

Executive priority

Handle through normal kernel patch management unless local exposure to virtio_net/XDP_TX is broad or operationally critical. Escalate priority for high-density virtual infrastructure where memory leaks can affect service availability.

Technical view

In virtio_net, if xdp_convert_buff_to_frame() returns NULL after xdp_linearize_page() allocated xdp_page, the error path failed to free that newly allocated page. The kernel fix aligns this path with other err_xdp handling. Evidence identifies Linux kernel stable fixes but does not describe attacker prerequisites or impact severity.

Likely exposure

Exposure is most likely on Linux systems using the virtio_net driver with XDP_TX and mergeable buffers. The bundle lists Linux kernel versions and stable commits, but affected distribution package ranges and backports require vendor confirmation.

Exploitation context

The bundle marks KEV as false and provides no cited evidence of active exploitation. No public exploit status, CVSS score, or attack complexity is supplied. Treat exploitation details as unknown rather than assumed.

Researcher notes

Evidence is limited to the CVE description and kernel stable references. The vulnerable behavior is an unfreed page on a failed XDP buffer-to-frame conversion path. Impact and exploitability are not scored in the supplied sources.

Mitigation direction

  • Update to a Linux kernel package containing the referenced stable fix commits.
  • Check your Linux vendor advisory for backported fixes and affected package versions.
  • Prioritize systems using virtio_net, XDP_TX, or mergeable buffer configurations.
  • If patch timing is unclear, follow vendor guidance for temporary risk reduction.

Validation and detection

  • Inventory running Linux kernel versions across virtualized and network-heavy systems.
  • Confirm whether virtio_net and XDP_TX are used on in-scope hosts.
  • Compare installed kernel changelogs against the referenced stable fix commits.
  • Monitor affected systems for abnormal kernel memory growth until patched.
Prepared
Confidence
medium
Sources
6

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.

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CVE-2022-50065 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
0ADP providers
5Source links

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.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux44fa2dbd475996ddc8f3a0e6113dee983e0ee3aa, 44fa2dbd475996ddc8f3a0e6113dee983e0ee3aa, 44fa2dbd475996ddc8f3a0e6113dee983e0ee3aa, 44fa2dbd475996ddc8f3a0e6113dee983e0ee3aaunaffected
LinuxLinux4.18, 0, 5.10.138, 5.15.63, 5.19.4, 6.0affected
Weakness

CWE details

No CWE listed

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