Updated ublock-origin packages are now available for both Debian GNU/Linux 9 (Stretch) and 10 (Buster) Extended LTS. These updates address a vulnerability that could allow a remote attacker to exploit an inefficient regular expression in ublock-origin’s filters, potentially leading to a denial-of-service and freezing of a web browser.

ELA-1456-1 ublock-origin security update

ELA-1456-1 ublock-origin security update

Package : ublock-origin
Version : 1.62.0+dfsg-0+deb9u2 (stretch), 1.62.0+dfsg-0+deb10u2 (buster)

Related CVEs :
CVE-2025-4215

A flaw was found in ublock-origin, an efficient ads, malware and tracker
blocker. A remote attacker could abuse an inefficient regular expression in
ublock-origin’s filters to cause a denial-of-service and freeze a web browser.

ELA-1456-1 ublock-origin security update