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CVE Record

CVE-2022-48960: net: hisilicon: Fix potential use-after-free in hix5hd2_rx()

In the Linux kernel, the following vulnerability has been resolved: net: hisilicon: Fix potential use-after-free in hix5hd2_rx() The skb is delivered to napi_gro_receive() which may free it, after calling this, dereferencing skb may trigger use-after-free.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-48960 is a Linux kernel bug in a Hisilicon network receive path. A network buffer may be freed by kernel networking code and then referenced again, creating a potential use-after-free. The sources provide fixes but no CVSS score, CWE, or evidence of active exploitation.

Executive priority

Use normal-to-elevated kernel patch priority for systems that use this driver. The absence of KEV and scoring lowers urgency, but kernel use-after-free bugs still deserve timely remediation where exposure is confirmed.

Technical view

The issue is in hix5hd2_rx(). After skb is handed to napi_gro_receive(), that call may free it. Later dereferencing the same skb can trigger use-after-free behavior. The CVE record lists multiple stable kernel fix commits and affected Linux version ranges, but does not describe exploitability impact beyond the memory-safety flaw.

Likely exposure

Exposure is most likely where affected Linux kernels include and use the Hisilicon hix5hd2 network driver. General Linux fleets should not assume exposure without confirming kernel version, driver presence, and hardware or module usage.

Exploitation context

The provided sources do not show CISA KEV listing, active exploitation, public exploit availability, or exploit prerequisites. Treat this as a kernel memory-safety vulnerability with uncertain practical exploitability based on the available evidence.

Researcher notes

Evidence is limited to the CVE record and Linux stable commits. The key validation question is whether napi_gro_receive() can free skb before later use in hix5hd2_rx(). Avoid assuming broad fleet exposure without driver and hardware confirmation.

Mitigation direction

  • Apply the relevant Linux stable kernel update containing the referenced fix commit.
  • Check your distribution or vendor kernel advisory for backported fixes.
  • Prioritize systems using Hisilicon hix5hd2 networking hardware or driver modules.
  • Track kernel package versions through normal vulnerability management workflows.

Validation and detection

  • Inventory Linux kernel versions against the affected ranges in the CVE record.
  • Confirm whether the hix5hd2 driver is present, built, loaded, or used.
  • Verify installed kernel packages include vendor backports for this CVE.
  • Confirm remediation by mapping deployed kernels to the referenced stable fixes.
Prepared
Confidence
medium
Sources
10

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-2022-48960 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
9Source 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
LinuxLinux57c5bc9ad7d799e9507ba6e993398d2c55f03fab, 57c5bc9ad7d799e9507ba6e993398d2c55f03fab, 57c5bc9ad7d799e9507ba6e993398d2c55f03fab, 57c5bc9ad7d799e9507ba6e993398d2c55f03fab, 57c5bc9ad7d799e9507ba6e993398d2c55f03fab, 57c5bc9ad7d799e9507ba6e993398d2c55f03fab, 57c5bc9ad7d799e9507ba6e993398d2c55f03fab, 57c5bc9ad7d799e9507ba6e993398d2c55f03fabunaffected
LinuxLinux3.16, 0, 4.9.336, 4.14.302, 4.19.269, 5.4.227, 5.10.159, 5.15.83, 6.0.13, 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.