What is CVE-2022-49770?

CVE-2022-49770 is a critical-severity vulnerability in Linux, classified under Use After Free. CVSS score: 9.8/10. Published 2025-05-01.

How severe is CVE-2022-49770?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Use After Free in Linux

CVE-2022-49770

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.

Vulnerability class: Use-After-Free

EPSS: 0.002 (9.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 5.4.226, 4.19.268, 4.0
Linux Linux_kernel — versions 2.6.34, 6.1

Weakness classification (CWE)

CWE-416 — Use After Free

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2022-49770?: CVE-2022-49770 is a critical-severity vulnerability in Linux, classified under Use After Free. CVSS score: 9.8/10. Published 2025-05-01.
How severe is CVE-2022-49770?: Critical severity. CVSS v3 base score is 9.8 out of 10.