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CVE-2022-49770

Linux Kernel use-after-free

9.8 CRITICALEPSS 0.57%
  1. Published1 May 2025

Description

In the Linux kernel, the following vulnerability has been resolved: ceph: avoid putting the realm twice when decoding snaps fails When decoding the snaps fails it maybe leaving the 'first_realm' and 'realm' pointing to the same snaprealm memory. And then it'll put it twice and could cause random use-after-free, BUG_ON, etc issues.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux Kernel≥ 2.6.35 < 4.19.268 · ≥ 4.20 < 5.4.226 · ≥ 5.11 < 5.15.81 · ≥ 5.16 < 6.0.10

Remediation

Fixed in
Linux Kernel≥ 4.19.268

References

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Frequently asked

Is CVE-2022-49770 being actively exploited?

CVE-2022-49770 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.57%.

How severe is CVE-2022-49770?

CVE-2022-49770 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.57% probability of exploitation.

Which products are affected by CVE-2022-49770?

Affected products include Linux Kernel.

How do I fix CVE-2022-49770?

Upgrade affected software to a fixed version, for example Linux Kernel 4.19.268 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-49770 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.