Description
setDeferredReply in networking.c in Valkey through 8.1.1 has an integer underflow for prev->size - prev->used.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Valkey | Valkey | ≤ 8.1.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | redis | No fix yet | — |
| Debian 14 | valkey | 8.1.1+dfsg1-2 | — |
| Debian 13 | redis | No fix yet | — |
| Debian 13 | valkey | 8.1.1+dfsg1-2 | — |
| Debian 12 | redis | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | redis +1 | No fix yet | — |
| Ubuntu 26.04 LTS | redis +1 | No fix yet | — |
| Ubuntu 25.10 | redis +1 | No fix yet | — |
| Ubuntu 25.10 | valkey | 8.1.4+dfsg1-0ubuntu0.2 | USN-7893-1 |
| Ubuntu 24.04 LTS | redis | No fix yet | — |
| Ubuntu 24.04 LTS | valkey | 7.2.11+dfsg1-0ubuntu0.2 | USN-7893-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | redis | No fix yet | — |
| Ubuntu Pro 20.04 LTS | redis | No fix yet | — |
| Ubuntu Pro 18.04 LTS | redis | No fix yet | — |
| Ubuntu Pro 16.04 LTS | redis | No fix yet | — |
| Ubuntu Pro 14.04 LTS | redis | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | valkey | 8.0.2-150700.3.5.1 | SUSE-SU-2025:01942-1 |
| SLES 15 SP6 | valkey | 8.0.2-150600.13.11.1 | SUSE-SU-2025:02231-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | valkey | 8.1.2-1.1 | openSUSE-SU-2025:15306-1 |
| openSUSE Leap 15.6 | valkey | 8.0.2-150600.13.11.1 | SUSE-SU-2025:02231-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | valkey +1 | 8.0.3-3.amzn2023.0.2 | ALAS2023-2025-1025 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | valkey | 8.0.3-3 | — |
Advisories 5
- USN-7893-1 valkey vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2025:15306-1 valkey-8.1.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01942-1 Security update for valkey SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02231-1 Security update for valkey SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2025-1025 Low: valkey security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 23, 2025