CVE-2025-68302Network attack vector

Kernel crash via NULL receive-buffer dereference

Published Dec 16, 2025 · Updated Dec 16, 2025

NULL-pointer dereference in the Linux SXGBE network driver allows remote attackers to crash affected kernels via network traffic. In sxgbe_rx(), a failed receive-buffer allocation leaves skb NULL, but the error path logs the failure and immediately dereferences skb instead of transferring control to sxgbe_rx_refill(). An active SXGBE interface and sustained unauthenticated traffic that exhausts GFP_ATOMIC receive-buffer allocation are required; the resulting oops or panic interrupts the host.

CVSS severity7.5
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer dereference in the Linux SXGBE network driver allows remote attackers to crash affected kernels via network traffic. In sxgbe_rx(), a failed receive-buffer allocation leaves skb NULL, but the error path logs the failure and immediately dereferences skb instead of transferring control to sxgbe_rx_refill(). An active SXGBE interface and sustained unauthenticated traffic that exhausts GFP_ATOMIC receive-buffer allocation are required; the resulting oops or panic interrupts the host.

The record

CVE
CVE-2025-68302
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1498
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1edb9ca69e8a7988900fc0283e10550b5592164d <18ef3ad1bb57dcf1a9ee61736039aedccf670b21
  2. Affected versionversion=1edb9ca69e8a7988900fc0283e10550b5592164d <45b5b4ddb8d6bea5fc1625ff6f163bbb125d49cc
  3. Affected versionversion=1edb9ca69e8a7988900fc0283e10550b5592164d <46e5332126596a2ca791140feab18ce1fc1a3c86
  4. Affected versionversion=1edb9ca69e8a7988900fc0283e10550b5592164d <7fd789d6ea4915034eb6bcb72f6883c8151083e5
  5. Affected versionversion=1edb9ca69e8a7988900fc0283e10550b5592164d <88f46c0be77bfe45830ac33102c75be7c34ac3f3
  6. Affected versionversion=1edb9ca69e8a7988900fc0283e10550b5592164d <ac171c3c755499c9f87fe30b920602255f8b5648
  7. Affected versionversion=1edb9ca69e8a7988900fc0283e10550b5592164d <f5bce28f6b9125502abec4a67d68eabcd24b3b17
  8. Affected versionversion=3.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1edb9ca69e8a7988900fc0283e10550b5592164d <18ef3ad1bb57dcf1a9ee61736039aedccf670b21; version=1edb9ca69e8a7988900fc0283e10550b5592164d <45b5b4ddb8d6bea5fc1625ff6f163bbb125d49cc; version=1edb9ca69e8a7988900fc0283e10550b5592164d <46e5332126596a2ca791140feab18ce1fc1a3c86; version=1edb9ca69e8a7988900fc0283e10550b5592164d <7fd789d6ea4915034eb6bcb72f6883c8151083e5; version=1edb9ca69e8a7988900fc0283e10550b5592164d <88f46c0be77bfe45830ac33102c75be7c34ac3f3; version=1edb9ca69e8a7988900fc0283e10550b5592164d <ac171c3c755499c9f87fe30b920602255f8b5648; version=1edb9ca69e8a7988900fc0283e10550b5592164d <f5bce28f6b9125502abec4a67d68eabcd24b3b17; version=3.15

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5LinuxCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1498Network Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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