CVE-2025-58183

A flaw was found in the archive/tar package in the Go standard library. tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A specially crafted tar archive with a pax header indicating a big number of sparse regions can cause a Go program to try to allocate a large amount of memory, causing an out-of-memory condition and resulting in a denial of service.

To exploit this issue, an attacker needs to be able to process a specially crafted GNU tar pax 1.0 archive with the application using the archive/tar package. Additionally, this issue can cause the Go application to allocate a large amount of memory, eventually leading to an out-of-memory condition and resulting in a denial of service with no other security impact. Due to these reasons, this flaw has been rated with a moderate severity.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.