redis -- Bug in XACKDEL may lead to stack overflow and potential RCE

2025-11-03 · CVE-2025-62507 · VuXML entry

Google Big Sleep reports: A user can run the XACKDEL command with multiple ID's and trigger a stack buffer overflow, which may potentially lead to remote code execution. The problem exists in Redis 8.2 or newer. The code doesn't handle the case where the number of ID's exceeds the STREAMID_STATIC_VECTOR_LEN, and skips a reallocation, which leads to a stack buffer overflow. An additional workaround to mitigate the …

Affected versions

• redis >= 8.2.0 < 8.2.3

By system

0 still vulnerable, 2 fixed. Where VuXML applies (FreeBSD, DragonFly, FreeBSD's derivatives) a port is vulnerable while its version is in a range; pkgsrc says itself whether it lists a CVE of this advisory; OpenBSD and MidnightBSD keep no list this site reads, so their row is only an estimate: FreeBSD's ranges applied to upstream's version.