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Echo: linux: security update to 6.1.176-1

critical Tenable Self-Hosted Container Security Plugin ID 459269

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: net: usb: rtl8150: fix use-after-free
 in rtl8150_start_xmit() syzbot reported a KASAN slab-use-after-free read in rtl8150_start_xmit() when
 accessing skb->len for tx statistics after usb_submit_urb() has been called: BUG: KASAN: slab-use-after-
 free in rtl8150_start_xmit+0x71f/0x760 drivers/net/usb/rtl8150.c:712 Read of size 4 at addr
 ffff88810eb7a930 by task kworker/0:4/5226 The URB completion handler write_bulk_callback() frees the skb
 via dev_kfree_skb_irq(dev->tx_skb). The URB may complete on another CPU in softirq context before
 usb_submit_urb() returns in the submitter, so by the time the submitter reads skb->len the skb has already
 been queued to the per-CPU completion_queue and freed by net_tx_action(): CPU A (xmit) CPU B (USB
 completion softirq) ------------ ------------------------------ dev->tx_skb = skb; usb_submit_urb() --+
 |-------> write_bulk_callback() | dev_kfree_skb_irq(dev->tx_skb) | net_tx_action() | napi_skb_cache_put()
 <-- free netdev->stats.tx_bytes | += skb->len; <-- UAF read Fix it by caching skb->len before submitting
 the URB and using the cached value when updating the tx_bytes counter. The pre-existing tx_bytes semantics
 are preserved: the counter tracks the original frame length (skb->len), not the ETH_ZLEN/USB-alignment
 padded "count" value that is handed to the device. Changing that would be a user-visible accounting change
 and is out of scope for this UAF fix. (CVE-2026-52982)

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-2026-52982

Plugin Details

Severity: Critical

ID: 459269

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.14

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-52982

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: 6/25/2026

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-52982