CVE-2025-49112

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

Redis is an advanced key-value store. It is often referred to as a dattructure server since keys can contain strings, hashes ,lists, sets anorted sets.

Security Fix(es):

Redis is an open source, in-memory database that persists on disk. In versions starting from 7.0.0 to before 8.0.2, a stack-based buffer overflow exists in redis-check-aof due to the use of memcpy with strlen(filepath) when copying a user-supplied file path into a fixed-size stack buffer. This allows an attacker to overflow the stack and potentially achieve code execution. This issue has been patched in version 8.0.2.(CVE-2025-27151)

setDeferredReply in networking.c in Valkey through 8.1.1 has an integer underflow for prev->size - prev->used.(CVE-2025-49112)

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

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

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

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

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

These are all security issues fixed in the valkey-8.1.2-1.1 package on the GA media of openSUSE Tumbleweed.

This update for valkey fixes the following issues:

• CVE-2025-27151: Absence of filename size check may cause a stack overflow (bsc#1243804)
• CVE-2025-49112: setDeferredReply integer underflow (bsc#1243913)
• CVE-2025-21605: Output buffer denial of service (bsc#1241708)

This update for valkey fixes the following issues:

• CVE-2025-27151: Absence of filename size check may cause a stack overflow (bsc#1243804).
• CVE-2025-49112: setDeferredReply integer underflow (bsc#1243913).

Benny Isaacs, Nir Brakha, and Sagi Tzadik discovered that Valkey incorrectly handled memory when running Lua scripts. An authenticated attacker could use this vulnerability to trigger a use-after-free condition, and potentially achieve remote code execution on the Valkey server. (CVE-2025-49844)

It was discovered that Valkey incorrectly handled memory when running Lua scripts. An authenticated attacker could use this vulnerability to trigger a integer overflow condition, and potentially achieve remote code execution on the Valkey server. (CVE-2025-46817)

It was discovered that Valkey incorrectly handled Lua objects. An authenticated attacker could possibly use this issue to escalate their privileges. (CVE-2025-46818)

It was discovered that Valkey incorrectly handled memory when running Lua scripts. An authenticated attacker could use this vulnerability to read out-of-bounds memory, causing a denial of service or possibly obtaining sensitive information. (CVE-2025-46819)

It was discovered that Valkey incorrectly handled memory in some calculations. An attacker could possibly use this issue to cause a denial of service. (CVE-2025-49112)