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Linux KernelOperating system · Linux

CVE-2022-49724

HIGH · 7.8 CVSS v3.1 Published 2025-02-26
Fix available
A fix is available. Upgrade to 4.14.285 / 4.19.249 or later.
See remediation →
80/100
Remediation priority · High
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: tty: goldfish: Fix free_irq() on remove Pass the correct dev_id to free_irq() to fix this splat when the driver is unbound: WARNING: CPU: 0 PID: 30 at kernel/irq/manage.c:1895 free_irq Trying to free already-free IRQ 65 Call Trace: warn_slowpath_fmt free_irq goldfish_tty_remove platform_remove device_remove device_release_driver_internal device_driver_detach unbind_store drv_attr_store ...

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-416

Memory is used after it has been freed, so its contents — now potentially attacker-controlled — drive the program's behaviour. With careful heap grooming this becomes code execution. The fix requires disciplined ownership of memory and often a targeted rework of the object lifecycle.

General guidance for the use after free class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 4.6, < 4.14.285>= 4.15, < 4.19.249>= 4.20, < 5.4.200>= 5.5, < 5.10.124>= 5.11, < 5.15.49>= 5.16, < 5.18.6= 5.19

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 4.14.285 / 4.19.249 / 5.4.200 or later
Fixed in 4.14.2854.19.2495.4.200
Vendor patch git.kernel.org →
Recommended fix High confidence

Upgrade to Linux kernel 4.14.285, 4.19.249, 5.4.200, 5.10.124, or any later stable release (6.1+ is unaffected)

  1. Identify the currently running Linux kernel version using `uname -r` or `cat /proc/version`
  2. Compare the kernel version against the affected version ranges: 4.6 to 4.14.284, 4.15 to 4.19.248, 4.20 to 5.4.199, or 5.5 to 5.10.123
  3. If running an affected version, upgrade to a fixed release: for 4.14.x upgrade to 4.14.285 or later; for 4.19.x upgrade to 4.19.249 or later; for 5.4.x upgrade to 5.4.200 or later; for 5.10.x upgrade to 5.10.124 or later
  4. On distributions using point releases (e.g., Ubuntu, Debian, RHEL), apply the distribution's kernel security update that includes this fix
  5. Reboot the system to load the fixed kernel
  6. Verify the fix by checking the goldfish_tty driver removal no longer produces the free_irq warning
Caveat Kernel upgrades may require system reboot and could have compatibility implications with custom modules or specific hardware drivers; test in staging first

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $3,200. Get the upgrade done

Scan for this in your stack

Free · runs locally
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-49724 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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