In the Linux kernel, the following vulnerability has been resolved: bpf: Fix ld_{abs,ind} failure path analysis in subprogs Usage of ld_{abs,ind} instructions got extended into subprogs some time ago via commit 09b28d76eac4 ("bpf: Add abnormal return checks."). These are only allowed in subprograms when the latter are BTF annotated and have scalar return types. The code generator in bpf_gen_ld_abs() has an abnormal exit path (r0=0 + exit) from legacy cBPF times. While the enforcement is on scalar return types, the verifier must also simulate the path of abnormal exit if the packet data load via ld_{abs,ind} failed. This is currently not the case. Fix it by having the verifier simulate both success and failure paths, and extend it in similar ways as we do for tail calls. The success path (r0=unknown, continue to next insn) is pushed onto stack for later validation and the r0=0 and return to the caller is done on the fall-through side.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6415 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6415-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     August 06, 2026                       https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : linux     CVE ID         : CVE-2025-40098 CVE-2026-45897 CVE-2026-45901 CVE-2026-53078                      CVE-2026-53090 CVE-2026-64205 CVE-2026-64280 CVE-2026-64290                      CVE-2026-64561 CVE-2026-64562 CVE-2026-64563 CVE-2026-64564                      CVE-2026-64565 CVE-2026-64567 CVE-2026-64568 CVE-2026-64569                      CVE-2026-64570 CVE-2026-64571 CVE-2026-64572 CVE-2026-64573                      CVE-2026-64574 CVE-2026-64576 CVE-2026-64577 CVE-2026-64578                      CVE-2026-64579 CVE-2026-64580 CVE-2026-64583 CVE-2026-64584     Debian Bug     : 1143721

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For the stable distribution (trixie), these problems have been fixed in     version 6.12.101-1.

    We recommend that you upgrade your linux packages.

    For the detailed security status of linux please refer to its security     tracker page at:
    https://security-tracker.debian.org/tracker/linux

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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

  - bpf: Fix ld_{abs,ind} failure path analysis in subprogs Usage of ld_{abs,ind} instructions got extended     into subprogs some time ago via commit 09b28d76eac4 (bpf: Add abnormal return checks.). These are only     allowed in subprograms when the latter are BTF annotated and have scalar return types. The code generator     in bpf_gen_ld_abs() has an abnormal exit path (r0=0 + exit) from legacy cBPF times. While the enforcement     is on scalar return types, the verifier must also simulate the path of abnormal exit if the packet data     load via ld_{abs,ind} failed. This is currently not the case. Fix it by having the verifier simulate both     success and failure paths, and extend it in similar ways as we do for tail calls. The success path     (r0=unknown, continue to next insn) is pushed onto stack for later validation and the r0=0 and return to     the caller is done on the fall-through side. (CVE-2026-53090)

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

ID	Name	Product	Family	Severity
333110	Debian dsa-6415 : ata-modules-6.12.100+deb13-armmp-di - security update	Nessus	Debian Local Security Checks	medium
329305	openSUSE 16: cluster-md-kmp-64kb / cluster-md-kmp-azure / cluster-md-kmp-default / etc (openSUSE-SU-2026:21388-1)	Nessus	SuSE Local Security Checks	high
329149	SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:3166-1)	Nessus	SuSE Local Security Checks	medium
322604	Linux Distros Unpatched Vulnerability : CVE-2026-53090	Nessus	Misc.	medium

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