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VulnerabilityPublished Updated

CVE-2026-43039: Linux kernel · net: ti: icssg-prueth: fix missing data copy and wrong recycle in ZC RX dispatch

Source GCVE Database

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 27 Oct 2026, 01:02 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

A fix is available that copies the received packet data correctly into the skb and removes the improper skb recycling call. Users should apply the official Linux kernel patches that address this issue. Since this is a kernel vulnerability, upgrading to a patched kernel version is the recommended remediation.

Description

A critical vulnerability in the Linux kernel's net: ti: icssg-prueth driver was fixed to address missing data copying and incorrect recycling in zero-copy (ZC) RX dispatch. The flaw caused the network stack to pass uninitialized kernel heap memory to userspace, leaking sensitive data. Additionally, improper skb recycling could corrupt kernel memory management structures.

References

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