[Intel-wired-lan] [PATCH net 0/3] e1000/e1000e: fix uninitialized memory access in EEPROM write

Agalakov Daniil
2026-03-18T15:16:23Z

This series addresses a common issues related to uninitialized memory
access during EEPROM write operations in the e1000 and e1000e drivers.

In the e1000 driver, the return value of e1000_read_eeprom() was not
checked, and both e1000 and e1000e drivers performed endianness
conversion on the entire buffer, including uninitialized interior words.

The changes are:
- add missing error checks for e1000_read_eeprom() in e1000;
- limit endianness conversion to the boundary words being read,
avoiding a loop over entire (and partially uninitialized) buffer in
both e1000 and e1000e.

Patch 1: e1000: check return value of e1000_read_eeprom
Patch 2: e1000: fix endianness conversion of uninitialized words
Patch 3: e1000e: fix endianness conversion of uninitialized words

Co-developed-by: Iskhakov Daniil <dish@amicon.ru>
Signed-off-by: Iskhakov Daniil <dish@amicon.ru>
Signed-off-by: Agalakov Daniil <ade@amicon.ru>
---
.../net/ethernet/intel/e1000/e1000_ethtool.c | 18 +++++++++++++-----
drivers/net/ethernet/intel/e1000e/ethtool.c | 19 ++++++++++++-------
2 files changed, 25 insertions(+), 12 deletions(-)

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2.51.0