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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-72396

hwmon: adm1275: Prevent reading uninitialized stack

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: adm1275: Prevent reading uninitialized stack While adding support for the ROHM BD127X0 hot-swap controllers, sashiko reported an error in device-name comparison, which can lead to reading uninitialized stack memory. Quoting Sashiko: This is a pre-existing issue, but I noticed that just before this block in adm1275_probe(), there might be an out-of-bounds stack read: ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); if (ret < 0) { ... } for (mid = adm1275_id; mid->name[0]; mid++) { if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) break; } Since i2c_smbus_read_block_data() reads up to 32 bytes into the uninitialized stack array block_buffer without appending a null terminator, strncasecmp() could read past the valid bytes returned in ret. For example, if the device returns a shorter string like "adm12", checking it against "adm1275" up to the length of "adm1275" will continue reading into uninitialized stack bounds. Prevent reading uninitialized memory by zeroing the stack array.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 87102808d03948c825c3bdc48316e48f6422fd7e to < 57d583f069fa9d3d0c0831e34b967d1f61edae94affected
  • 87102808d03948c825c3bdc48316e48f6422fd7e to < 82e4ab03a6ab9b87667410f5143bc484d7a62bdcaffected
  • 87102808d03948c825c3bdc48316e48f6422fd7e to < c9e04a52663bc6651c06c2427df088b751062bd6affected
  • 87102808d03948c825c3bdc48316e48f6422fd7e to < 39a581bd64a0e91112ec8017a2dd4e70c1336e99affected
  • 87102808d03948c825c3bdc48316e48f6422fd7e to < aa35cee30686e6be3c890bf741429c5025d55abeaffected
  • 87102808d03948c825c3bdc48316e48f6422fd7e to < 36554592e2f5cac16ff8bf73720d38a6d9ef4a20affected
  • 87102808d03948c825c3bdc48316e48f6422fd7e to < 93b96e723bdcba6172a5814262be875abcc5d269affected
  • 87102808d03948c825c3bdc48316e48f6422fd7e to < 553f9517813912a5ab661af5504485d96824a61caffected

Linux Linux

Default version status: affected

  • 3.3affected
  • 0 to < 3.3unaffected
  • 5.10.261 to ≤ 5.10.*unaffected
  • 5.15.212 to ≤ 5.15.*unaffected
  • 6.1.178 to ≤ 6.1.*unaffected
  • 6.6.145 to ≤ 6.6.*unaffected
  • 6.12.97 to ≤ 6.12.*unaffected
  • 6.18.40 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References