Kernel memory disclosure via unpadded short frames
Published Sep 27, 2024 · Updated May 12, 2026
Out-of-bounds read in the DPAA Ethernet driver allows local users to disclose up to three bytes of kernel memory in short frames. The transmit path in drivers/net/ethernet/freescale/dpaa/dpaa_eth.c passes undersized buffers without extending them to ETH_ZLEN, so Ethernet padding contains bytes beyond the packet data. Local users must be able to transmit short packets through an affected DPAA interface; each emitted frame exposes at most three trailing bytes.
Summary
What happened
Out-of-bounds read in the DPAA Ethernet driver allows local users to disclose up to three bytes of kernel memory in short frames. The transmit path in drivers/net/ethernet/freescale/dpaa/dpaa_eth.c passes undersized buffers without extending them to ETH_ZLEN, so Ethernet padding contains bytes beyond the packet data. Local users must be able to transmit short packets through an affected DPAA interface; each emitted frame exposes at most three trailing bytes.
The record
- CVE
- CVE-2024-46854
- Published
- Sep 27, 2024
- Updated
- May 12, 2026
- Vendor
- Siemens
- Product
- SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
- Classifications
- CWE-125, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 27, 2024CVE publishedPublication date reported by the CVE source.
- May 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <*
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
- Short-packet ping reproductionproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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