A flaw has been found in skvadrik re2c up to 4.4. Impacted is the function check_and_merge_special_rules of the file src/parse/ast.cc. This manipulation causes null pointer dereference. The attack can only be executed locally. The exploit has been published and may be used. Patch name: febeb977936f9519a25d9fbd10ff8256358cdb97. It is suggested to install a patch to address this issue.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - A flaw has been found in skvadrik re2c up to 4.4. Impacted is the function check_and_merge_special_rules
    of the file src/parse/ast.cc. This manipulation causes null pointer dereference. The attack can only be
    executed locally. The exploit has been published and may be used. Patch name:
    febeb977936f9519a25d9fbd10ff8256358cdb97. It is suggested to install a patch to address this issue.
    (CVE-2026-2903)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw has been found in skvadrik re2c up to 4.4. Impacted is the function check_and_merge_special_rules     of the file src/parse/ast.cc. This manipulation causes null pointer dereference. The attack can only be     executed locally. The exploit has been published and may be used. Patch name:
    febeb977936f9519a25d9fbd10ff8256358cdb97. It is suggested to install a patch to address this issue.
    (CVE-2026-2903)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
463808	Echo: re2c: security update to 4.1-1+e1	Tenable Cloud Security	Echo Local Security Checks	Local	medium
463808	Echo: re2c: security update to 4.1-1+e1	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
299747	Linux Distros Unpatched Vulnerability : CVE-2026-2903	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-2903

medium

Tenable Plugins

medium

medium

medium