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Echo: linux: security update to 6.1.180-1

critical Tenable Self-Hosted Container Security Plugin ID 458262

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: RDMA/rtrs-srv: Bound RDMA-Write length
 to chunk size in rdma_write_sg When the server answers an RTRS READ, rdma_write_sg() builds the source
 scatter/gather entry for the IB_WR_RDMA_WRITE that returns data to the peer. Its length is taken directly
 from the wire descriptor: plist->length = le32_to_cpu(id->rd_msg->desc[0].len); rd_msg points into the
 chunk buffer that the remote peer filled via RDMA-WRITE-WITH-IMM (rtrs_srv_rdma_done() -> process_io_req()
 -> process_read()), so desc[0].len is attacker-controlled and, before this change, was only rejected when
 zero. The source address is the fixed chunk start (dma_addr[msg_id]) and the source lkey is the PD-wide
 local_dma_lkey, which is not tied to the chunk's MR mapping, so the verbs layer does not constrain the
 transfer length to max_chunk_size. msg_id and off are bounded against queue_depth and max_chunk_size in
 rtrs_srv_rdma_done(), but desc[0].len is a separate field that was not checked against the chunk size. A
 peer that advertises desc[0].len larger than max_chunk_size can make the posted RDMA write read past the
 chunk's mapped region. The resulting behaviour depends on the IOMMU configuration: with no IOMMU or in
 passthrough mode the read may extend into memory adjacent to the chunk and be returned to the peer, which
 can disclose host memory; with a translating IOMMU the out-of-range access is expected to fault and abort
 the connection. In either case the transfer exceeds what the protocol permits and is driven by a remote
 peer. Reject a descriptor length above max_chunk_size, mirroring the existing off >= max_chunk_size bound
 in rtrs_srv_rdma_done(). Legitimate clients do not exceed it: the client sets desc[0].len to its MR
 length, which is capped at the negotiated max_io_size (max_chunk_size - MAX_HDR_SIZE). (CVE-2026-64269)

Solution

Update the linux library and its related packages to version 6.1.180-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-64269

Plugin Details

Severity: Critical

ID: 458262

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.41

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-64269

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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: 7/26/2026

Vulnerability Publication Date: 7/23/2026

Reference Information

CVE: CVE-2026-64269