7.8

CVE-2022-49564: linux Integer Underflow (Wrap or Wraparound)

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2022-49564DEBIAN-CVE-2022-49564
Published 26-02-2025Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2022-49564 is a high (CVSS 7.8) Integer Underflow (Wrap or Wraparound) vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 23 · Related 23
SUSE-SU-2025:01907-1SUSE-SU-2025:01908-1SUSE-SU-2025:01956-1SUSE-SU-2025:01958-1SUSE-SU-2025:1027-1SUSE-SU-2025:1176-1

Timeline

  1. 26-02-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - add param check for DH Reject requests with a source buffer that is bigger than the size of the key. This is to prevent a possible integer underflow that might happen when copying the source scatterlist into a linear buffer.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

0.00 pp

From 0.28% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.28%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu111 products
  • linuxAll versions (No fix recorded) | < 5.15.0-50.56
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1021.25
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c9839143ebbf5e821128da44f7e271d745aab19e, < e7f979ed51f96495328157df663c835b17db1e30 | ≥ c9839143ebbf5e821128da44f7e271d745aab19e, < 76c9216833e7c20a67c987cf89719a3f01666aaa | ≥ c9839143ebbf5e821128da44f7e271d745aab19e, < 2acbb8771f6ac82422886e63832ee7a0f4b1635b | 4.8
  • linux_kernel< 5.15.58 | ≥ 5.16, < 5.18.15
Debian1 product
  • linux< 5.18.16-1

3 vendors · 114 products

References

7 links