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

  - btrfs: lzo: reject compressed segment that overflows the compressed input lzo_decompress_bio() validates     each on-disk segment length seg_len only against the workspace cbuf size, not against the compressed input     size (compressed_len, the total folio bytes of the bio). A crafted extent can carry a segment whose     seg_len passes the cbuf check but runs past the end of the bio, so copy_compressed_segment() walks off the     last folio: get_current_folio() then returns the NULL folio from bio_next_folio(), and with     CONFIG_BTRFS_ASSERT disabled (default) folio_size(NULL) faults. BUG: KASAN: null-ptr-deref in     lzo_decompress_bio (fs/btrfs/lzo.c:383) Read of size 8 at addr 0000000000000000 by task kworker/u8:1/29     Workqueue: btrfs-endio simple_end_io_work kasan_report (mm/kasan/report.c:590) lzo_decompress_bio     (fs/btrfs/lzo.c:383) end_bbio_compressed_read (fs/btrfs/compression.c:1065) btrfs_bio_end_io     (fs/btrfs/bio.c:135) btrfs_check_read_bio (fs/btrfs/bio.c:180 fs/btrfs/bio.c:285) simple_end_io_work     process_one_work worker_thread Reject any segment whose payload would extend beyond compressed_len before     copying it, treating it as corruption like the other on-disk validation failures in this function.
    (CVE-2026-80631)

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

ID	Name	Product	Family	Published	Updated	Severity
365767	Ubuntu 26.04 LTS : Linux kernel vulnerabilities (USN-8887-1)	Nessus	Ubuntu Local Security Checks	10/14/2026	10/14/2026	medium
365463	Ubuntu 26.04 LTS : Linux kernel (OEM) vulnerabilities (USN-8889-1)	Nessus	Ubuntu Local Security Checks	10/13/2026	10/13/2026	medium
365768	Ubuntu 26.04 LTS : Linux kernel (Azure) vulnerabilities (USN-8888-1)	Nessus	Ubuntu Local Security Checks	10/14/2026	10/14/2026	medium
366742	SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:4706-1)	Nessus	SuSE Local Security Checks	10/17/2026	10/17/2026	high
341296	Linux Distros Unpatched Vulnerability : CVE-2026-80631	Nessus	Misc.	8/28/2026	10/23/2026	high

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