Detections
Analytics

Google: sys-kernel/csql-kernel-6_1, sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_1, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6, sys-kernel/tpusev-kernel-6_6: security update to 18613.731.2

high Tenable Self-Hosted Container Security Plugin ID 465826

Description

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

 - In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conncount: fix zone
 comparison in tuple dedup The "already exists" dedup logic in __nf_conncount_add() decides whether a
 connection has already been counted and can be skipped instead of incrementing the connlimit count. It
 compares the conntrack zone of a list entry with the zone of the connection being added using
 nf_ct_zone_id() and nf_ct_zone_equal(), passing conn->zone.dir or zone->dir as the direction argument.
 Those helpers take enum ip_conntrack_dir values: IP_CT_DIR_ORIGINAL is 0 and IP_CT_DIR_REPLY is 1.
 However, zone->dir is a u8 bitmask: NF_CT_ZONE_DIR_ORIG is 1, NF_CT_ZONE_DIR_REPL is 2 and
 NF_CT_DEFAULT_ZONE_DIR is 3. Passing that bitmask as the enum direction shifts the meaning of every non-
 zero value. An ORIG-only zone passes 1 and is tested as REPLY, while REPL-only and default zones pass 2 or
 3 and test bits beyond the valid direction range. In those cases nf_ct_zone_id() can fall back to
 NF_CT_DEFAULT_ZONE_ID instead of using the real zone id, so different zones can be treated as equal and
 dedup collapses to tuple equality alone. nf_conncount stores and compares the original-direction tuple for
 a connection. If an skb already has an attached conntrack entry, get_ct_or_tuple_from_skb() explicitly
 copies ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple, regardless of the packet's ctinfo. Therefore the zone
 comparison in the tuple dedup path must use IP_CT_DIR_ORIGINAL as well; the zone direction bitmask
 describes where a zone id applies, not which direction this conncount tuple represents. Fix the two dedup
 comparisons by passing IP_CT_DIR_ORIGINAL directly. Do not special-case NF_CT_DEFAULT_ZONE_DIR and do not
 compare raw zone ids: using the existing helpers with IP_CT_DIR_ORIGINAL preserves the direction-aware
 NF_CT_DEFAULT_ZONE_ID fallback. A default bidirectional zone contains the ORIG bit, so it naturally
 returns the real zone id; reply-only zones continue to fall back for original-direction tuple comparisons.
 (CVE-2026-72247)

Solution

Update the sys-kernel/csql-kernel-6_1 library and its related packages to version 18613.731.2 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-117.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 465826

Version: Revision 1.3

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-72247

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/11/2026

Reference Information

CVE: CVE-2026-72247