# CVE-2022-49507: linux: In the Linux kernel, the following vulnerability has been resolved:  regulator: da9121: Fix uninit-value in da9121_as...

CVE-2022-49507 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49507, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49507
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  regulator: da9121: Fix uninit-value in da9121_assign_chip_model()  KASAN report slab-out-of-bounds in __regmap_init as follows:  BUG: KASAN: slab-out-of-bounds in __regmap_init drivers/base/regmap/regmap.c:841 Read of size 1 at addr ffff88803678cdf1 by task xrun/9137  CPU: 0 PID: 9137 Comm: xrun Tainted: G        W         5.18.0-rc2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace:  <TASK>  dump_stack_lvl+0xe8/0x15a lib/dump_stack.c:88  print_report.cold+0xcd/0x69b mm/kasan/report.c:313  kasan_report+0x8e/0xc0 mm/kasan/report.c:491  __regmap_init+0x4540/0x4ba0 drivers/base/regmap/regmap.c:841  __devm_regmap_init+0x7a/0x100 drivers/base/regmap/regmap.c:1266  __devm_regmap_init_i2c+0x65/0x80 drivers/base/regmap/regmap-i2c.c:394  da9121_i2c_probe+0x386/0x6d1 drivers/regulator/da9121-regulator.c:1039  i2c_device_probe+0x959/0xac0 drivers/i2c/i2c-core-base.c:563  This happend when da9121 device is probe by da9121_i2c_id, but with invalid dts. Thus, chip->subvariant_id is set to -EINVAL, and later da9121_assign_chip_model() will access 'regmap' without init it.  Fix it by return -EINVAL from da9121_assign_chip_model() if 'chip->subvariant_id' is invalid.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.18.5-1 | [DEBIAN-CVE-2022-49507](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49507.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.18.5-1 | [DEBIAN-CVE-2022-49507](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49507.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.18.5-1 | [DEBIAN-CVE-2022-49507](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49507.md) | Feb 26, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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