CVE-2024-50196

Medium

In the Linux kernel, the following vulnerability has been resolved: pinctrl: ocelot: fix system hang on level based interrupts The current implementation only calls chained_irq_enter() and chained_irq_exit() if it detects pending interrupts. ``` for (i = 0; i < info->stride; i++) { uregmap_read(info->map, id_reg + 4 * i, &reg); if (!reg) continue; chained_irq_enter(parent_chip, desc); ``` However, in case of GPIO pin configured in level mode and the parent controller configured in edge mode, GPIO interrupt might be lowered by the hardware. In the result, if the interrupt is short enough, the parent interrupt is still pending while the GPIO interrupt is cleared; chained_irq_enter() never gets called and the system hangs trying to service the parent interrupt. Moving chained_irq_enter() and chained_irq_exit() outside the for loop ensures that they are called even when GPIO interrupt is lowered by the hardware. The similar code with chained_irq_enter() / chained_irq_exit() functions wrapping interrupt checking loop may be found in many other drivers: ``` grep -r -A 10 chained_irq_enter drivers/pinctrl ```

Package Linux Kernel
Published 2024-11-08
Last modified 2025-11-03
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-754

CVE-2024-50196 is classified as CWE-754

See CWE-754 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 4.16 and later are affected. Fixed in 5.15.169, 6.1.114, 6.6.58, 6.11.5, 6.12 and their respective stable series.

Affected from
≥ 4.16
Fixed in
✓ 5.15.169 5.15.x ✓ 6.1.114 6.1.x ✓ 6.6.58 6.6.x ✓ 6.11.5 6.11.x ✓ 6.12

References

The following references provide additional information about CVE-2024-50196 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

5 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2024-50196?

    CVE-2024-50196 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.16 onward and has been patched in 5.15.169, 6.1.114, 6.6.58 and others. CVE-2024-50196 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-50196?

    CVE-2024-50196 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2024-50196?

    Yes — CVE-2024-50196 has been patched. Fixed versions include 5.15.169, 6.1.114, 6.6.58 and others. If you are running Linux kernel 4.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-50196 actively exploited?

    No — CVE-2024-50196 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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