From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-cve-announce@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@kernel.org>
Subject: CVE-2026-74548: forcedeth: fix UAF of txrx_stats in nv_remove
Date: Sat, 15 Aug 2026 21:27:09 +0900 [thread overview]
Message-ID: <2026081550-CVE-2026-74548-2ddc@gregkh> (raw)
From: Greg Kroah-Hartman <gregkh@kernel.org>
Description
===========
In the Linux kernel, the following vulnerability has been resolved:
forcedeth: fix UAF of txrx_stats in nv_remove
nv_remove() frees the per-CPU txrx_stats before unregister_netdev().
Until unregister completes, ndo_get_stats64, the NAPI/xmit data path,
and nv_close()/drain may still access txrx_stats, leading to a
use-after-free.
Free the stats only after unregister_netdev().
The Linux kernel CVE team has assigned CVE-2026-74548 to this issue.
Affected and fixed versions
===========================
Issue introduced in 5.3 with commit f4b633b911fd3b4cbe1dc065e8fb064078d0889d and fixed in 6.6.151 with commit cf2dcde2284562ff87830ca0b7fa2b06e95aef1e
Issue introduced in 5.3 with commit f4b633b911fd3b4cbe1dc065e8fb064078d0889d and fixed in 6.12.103 with commit c9d24a205fd508b9999fcab6aca4c590490a12cf
Issue introduced in 5.3 with commit f4b633b911fd3b4cbe1dc065e8fb064078d0889d and fixed in 6.18.44 with commit ae20a8a4de06a289d40b0a0633d8d573f1fcb049
Issue introduced in 5.3 with commit f4b633b911fd3b4cbe1dc065e8fb064078d0889d and fixed in 7.1.8 with commit 201e05aa531eba0dfe2ee05b4e178f6ffa12c8b1
Issue introduced in 5.3 with commit f4b633b911fd3b4cbe1dc065e8fb064078d0889d and fixed in 7.2-rc6 with commit 22666ba1420164753d7b0f5a841986b25ace5435
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-2026-74548
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:
drivers/net/ethernet/nvidia/forcedeth.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/cf2dcde2284562ff87830ca0b7fa2b06e95aef1e
https://git.kernel.org/stable/c/c9d24a205fd508b9999fcab6aca4c590490a12cf
https://git.kernel.org/stable/c/ae20a8a4de06a289d40b0a0633d8d573f1fcb049
https://git.kernel.org/stable/c/201e05aa531eba0dfe2ee05b4e178f6ffa12c8b1
https://git.kernel.org/stable/c/22666ba1420164753d7b0f5a841986b25ace5435
reply other threads:[~2026-08-15 12:33 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2026081550-CVE-2026-74548-2ddc@gregkh \
--to=gregkh@linuxfoundation.org \
--cc=cve@kernel.org \
--cc=gregkh@kernel.org \
--cc=linux-cve-announce@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox