CVE-2026-18370
Description
A flaw was found in entr. A local attacker can exploit a heap-based buffer overflow in the run_utility() function by supplying specially crafted command-line arguments or using the /_ substitution feature. This can lead to memory corruption, causing a process abort and a denial of service (DoS).
Statement
The entr package is not shipped in any Red Hat product. This issue only affects the Fedora community package.
Mitigation
Update to a fixed version of entr that includes the patch from commit 2467fe0.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
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