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Echo: linux: security update to 6.1.170-1

medium Tenable Cloud Security Plugin ID 458397

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: wifi: mac80211: fix NULL pointer
 dereference in mesh_rx_csa_frame() In mesh_rx_csa_frame(), elems->mesh_chansw_params_ie is dereferenced at
 lines 1638 and 1642 without a prior NULL check: ifmsh->chsw_ttl = elems->mesh_chansw_params_ie->mesh_ttl;
 ... pre_value = le16_to_cpu(elems->mesh_chansw_params_ie->mesh_pre_value); The mesh_matches_local() check
 above only validates the Mesh ID, Mesh Configuration, and Supported Rates IEs. It does not verify the
 presence of the Mesh Channel Switch Parameters IE (element ID 118). When a received CSA action frame omits
 that IE, ieee802_11_parse_elems() leaves elems->mesh_chansw_params_ie as NULL, and the unconditional
 dereference causes a kernel NULL pointer dereference. A remote mesh peer with an established peer link
 (PLINK_ESTAB) can trigger this by sending a crafted SPECTRUM_MGMT/CHL_SWITCH action frame that includes a
 matching Mesh ID and Mesh Configuration IE but omits the Mesh Channel Switch Parameters IE. No
 authentication beyond the default open mesh peering is required. Crash confirmed on kernel
 6.17.0-5-generic via mac80211_hwsim: BUG: kernel NULL pointer dereference, address: 0000000000000000 Oops:
 Oops: 0000 [#1] SMP NOPTI RIP: 0010:ieee80211_mesh_rx_queued_mgmt+0x143/0x2a0 [mac80211] CR2:
 0000000000000000 Fix by adding a NULL check for mesh_chansw_params_ie after mesh_matches_local() returns,
 consistent with how other optional IEs are guarded throughout the mesh code. The bug has been present
 since v3.13 (released 2014-01-19). (CVE-2026-23279)

Solution

Update the linux library and its related packages to version 6.1.170-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-23279

Plugin Details

Severity: Medium

ID: 458397

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-23279

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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

Patch Publication Date: 5/1/2026

Vulnerability Publication Date: 3/25/2026

Reference Information

CVE: CVE-2026-23279