net: txgbe: fix heap overflow when reading module EEPROM
txgbe_read_eeprom_hostif() always copies round_up(length, 4) bytes
into the caller buffer, which ethtool allocates with exactly 'length'
bytes. A non-4-aligned length therefore causes an out-of-bounds write.
Copy only the remaining bytes on the final dword instead.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
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No data available yet.
No vendor fix or workaround currently provided.
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Tracking
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Wed, 12 Aug 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-122 |
Wed, 12 Aug 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: net: txgbe: fix heap overflow when reading module EEPROM txgbe_read_eeprom_hostif() always copies round_up(length, 4) bytes into the caller buffer, which ethtool allocates with exactly 'length' bytes. A non-4-aligned length therefore causes an out-of-bounds write. Copy only the remaining bytes on the final dword instead. | |
| Title | net: txgbe: fix heap overflow when reading module EEPROM | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-08-12T00:07:29.605Z
Reserved: 2026-07-30T09:28:09.394Z
Link: CVE-2026-68440
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-12T00:17:44.247
Modified: 2026-08-12T00:17:44.247
Link: CVE-2026-68440
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-08-12T16:00:04Z
-
CWE-122
Heap-based Buffer Overflow