# CVE-2022-48891: linux: In the Linux kernel, the following vulnerability has been resolved:  regulator: da9211: Use irq handler when ready  I...

CVE-2022-48891 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48891, released August 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48891
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 21, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  regulator: da9211: Use irq handler when ready  If the system does not come from reset (like when it is kexec()), the regulator might have an IRQ waiting for us.  If we enable the IRQ handler before its structures are ready, we crash.  This patch fixes:  [    1.141839] Unable to handle kernel read from unreadable memory at virtual address 0000000000000078 [    1.316096] Call trace: [    1.316101]  blocking_notifier_call_chain+0x20/0xa8 [    1.322757] cpu cpu0: dummy supplies not allowed for exclusive requests [    1.327823]  regulator_notifier_call_chain+0x1c/0x2c [    1.327825]  da9211_irq_handler+0x68/0xf8 [    1.327829]  irq_thread+0x11c/0x234 [    1.327833]  kthread+0x13c/0x154

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.7-1 | [DEBIAN-CVE-2022-48891](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48891.md) | Aug 21, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.1.7-1 | [DEBIAN-CVE-2022-48891](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48891.md) | Aug 21, 2024 |
| Linux | linux Debian 14 | 6.1.7-1 | [DEBIAN-CVE-2022-48891](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48891.md) | Aug 21, 2024 |

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