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Fencer Vulns
low 3.1

CVE-2025-49112 json

setDeferredReply in networking.c in Valkey through 8.1.1 has an integer underflow for prev->size - prev->used.

published 2025-06-02 17 mo ago modified 2026-06-17 4 mo ago also BIT-keydb-2025-49112 , BIT-redis-2025-49112 , BIT-valkey-2025-49112 , EUVD-2025-16611

cvss
3.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

setDeferredReply in networking.c in Valkey through 8.1.1 has an integer underflow for prev->size - prev->used.

Patch / fix

  • bitnami valkey 8.1.4
  • redict Debian 14 7.3.5+ds-1
  • valkey Debian 14, Debian 13 8.1.1+dfsg1-2

debian advisories DEBIAN-CVE-2025-49112

  • valkey Ubuntu 24.04 LTS 7.2.11+dfsg1-0ubuntu0.2
  • valkey Ubuntu 25.10 8.1.4+dfsg1-0ubuntu0.2

ubuntu advisories UBUNTU-CVE-2025-49112

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • valkey SLE Module for Server Applications 15 SP6, openSUSE Leap 15.6 8.0.2-150600.13.11.1
  • valkey SLE Module for Server Applications 15 SP7 8.0.2-150700.3.5.1

suse advisories SUSE-SU-2025:02231-1SUSE-SU-2025:01942-1

  • valkey openSUSE Tumbleweed 8.1.2-1.1

opensuse advisories openSUSE-SU-2025:15306-1

  • valkey Azure Linux 3.0 8.0.3-3

azure linux advisories AZL-62243

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-49112 updated cvss 3.1

valkey: Valkey Integer Underflow Vulnerability

  • Red Hat Enterprise Linux 10 valkey
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
OSV 3.1 3.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
bitnami keydb — no fix listed
bitnami redis — no fix listed
bitnami valkey
<8.1.4
8.1.4

Affected products

  • Valkey Valkey

Classification

Weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound)
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD. Redis dispute this being a security vulnerability, and valkey have not currently merged it into the 8.1.x branch.