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Echo: linux: security update to 6.1.176-1

medium Tenable Cloud Security Plugin ID 457149

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: media: vidtv: fix nfeeds state
 corruption on start_streaming failure syzbot reported a memory leak in vidtv_psi_service_desc_init [1].
 When vidtv_start_streaming() fails inside vidtv_start_feed(), the nfeeds counter is left incremented even
 though no feed was actually started. This corrupts the driver state: subsequent start_feed calls see
 nfeeds > 1 and skip starting the mux, while stop_feed calls eventually try to stop a non-existent stream.
 This state corruption can also lead to memory leaks, since the mux and channel resources may be partially
 allocated during a failed start_streaming but never cleaned up, as the stop path finds dvb->streaming ==
 false and returns early. Fix by decrementing nfeeds back when start_streaming fails, keeping the counter
 in sync with the actual number of active feeds. [1] BUG: memory leak unreferenced object
 0xffff888145b50820 (size 32): comm "syz.0.17", pid 6068, jiffies 4294944486 backtrace (crc 90a0c7d4):
 vidtv_psi_service_desc_init+0x74/0x1b0 drivers/media/test-drivers/vidtv/vidtv_psi.c:288
 vidtv_channel_s302m_init+0xb1/0x2a0 drivers/media/test-drivers/vidtv/vidtv_channel.c:83
 vidtv_channels_init+0x1b/0x40 drivers/media/test-drivers/vidtv/vidtv_channel.c:524
 vidtv_mux_init+0x516/0xbe0 drivers/media/test-drivers/vidtv/vidtv_mux.c:518 vidtv_start_streaming
 drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline] vidtv_start_feed+0x33e/0x4d0
 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239 (CVE-2026-31585)

Solution

Update the linux library and its related packages to version 6.1.176-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-31585

Plugin Details

Severity: Medium

ID: 457149

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.96

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-2026-31585

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: 4/24/2026

Reference Information

CVE: CVE-2026-31585