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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

Affects Linux kernelSource GCVE Database

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Not known to be exploited · CVSS 9.8 Critical.

Data as of 12 Nov 2026, 00:49 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Linux)CVSS 3.19.8
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. Weaponized: 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 11 Nov 2026.

What to do

AI-suggested

A fix for this vulnerability has been implemented in the Linux kernel. Users and administrators should apply the official Linux kernel updates that include this patch to resolve the issue. No additional mitigation steps are indicated beyond applying the fixed kernel version.

Description

CVE-2026-43039 is a critical vulnerability in the Linux kernel's ti icssg-prueth network driver. It involves a missing data copy in the zero-copy (ZC) RX dispatch path, causing uninitialized kernel heap memory to be leaked to userspace. Additionally, an incorrect recycle operation corrupts page pool state. The flaw has been fixed by copying packet data properly and removing the erroneous recycle call.

References

Community reviews

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