linux-cve-announce - CVE-2025-37791: ethtool: cmis_cdb: use correct rpl size in ethtool_cmis_module

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025050120-CVE-2025-37791-793c@gregkh>
Date: Thu,  1 May 2025 15:07:38 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37791: ethtool: cmis_cdb: use correct rpl size in ethtool_cmis_module_poll()

From: Greg Kroah-Hartman <gregkh@...nel.org>

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

ethtool: cmis_cdb: use correct rpl size in ethtool_cmis_module_poll()

rpl is passed as a pointer to ethtool_cmis_module_poll(), so the correct
size of rpl is sizeof(*rpl) which should be just 1 byte.  Using the
pointer size instead can cause stack corruption:

Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ethtool_cmis_wait_for_cond+0xf4/0x100
CPU: 72 UID: 0 PID: 4440 Comm: kworker/72:2 Kdump: loaded Tainted: G           OE      6.11.0 #24
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: Dell Inc. PowerEdge R760/04GWWM, BIOS 1.6.6 09/20/2023
Workqueue: events module_flash_fw_work
Call Trace:
 <TASK>
 panic+0x339/0x360
 ? ethtool_cmis_wait_for_cond+0xf4/0x100
 ? __pfx_status_success+0x10/0x10
 ? __pfx_status_fail+0x10/0x10
 __stack_chk_fail+0x10/0x10
 ethtool_cmis_wait_for_cond+0xf4/0x100
 ethtool_cmis_cdb_execute_cmd+0x1fc/0x330
 ? __pfx_status_fail+0x10/0x10
 cmis_cdb_module_features_get+0x6d/0xd0
 ethtool_cmis_cdb_init+0x8a/0xd0
 ethtool_cmis_fw_update+0x46/0x1d0
 module_flash_fw_work+0x17/0xa0
 process_one_work+0x179/0x390
 worker_thread+0x239/0x340
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xcc/0x100
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x2d/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>

The Linux kernel CVE team has assigned CVE-2025-37791 to this issue.

Affected and fixed versions
===========================

	Issue introduced in 6.11 with commit a39c84d796254e6b1662ca0c46dbc313379e9291 and fixed in 6.12.25 with commit 61765e1b417a23371c3735e3cddf4ad9354ed2e9
	Issue introduced in 6.11 with commit a39c84d796254e6b1662ca0c46dbc313379e9291 and fixed in 6.14.4 with commit 7eb0a0072f966bb0b01d8b7d529d9743a7187bd1
	Issue introduced in 6.11 with commit a39c84d796254e6b1662ca0c46dbc313379e9291 and fixed in 6.15-rc3 with commit f3fdd4fba16c74697d8bc730b82fb7c1eff7fab3

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2025-37791
will be updated if fixes are backported, please check that for the most
up to date information about this issue.

Affected files
==============

The file(s) affected by this issue are:
	net/ethtool/cmis_cdb.c

Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/61765e1b417a23371c3735e3cddf4ad9354ed2e9
	https://git.kernel.org/stable/c/7eb0a0072f966bb0b01d8b7d529d9743a7187bd1
	https://git.kernel.org/stable/c/f3fdd4fba16c74697d8bc730b82fb7c1eff7fab3