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    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Thu, 01 Oct 2026 22:47:42 +0000</lastBuildDate>
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      <title>CVE-2026-23046 — virtio_net: fix device mismatch in devm_kzalloc/devm_kfree</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-23046</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;virtio_net: fix device mismatch in devm_kzalloc/devm_kfree&lt;/p&gt;
&lt;p&gt;Initial rss_hdr allocation uses virtio_device-&amp;gt;device,
but virtnet_set_queues() frees using net_device-&amp;gt;device.
This device mismatch causing below devres warning&lt;/p&gt;
&lt;p&gt;[ 3788.514041] ------------[ cut here ]------------
[ 3788.514044] WARNING: drivers/base/devres.c:1095 at devm_kfree+0x84/0x98, CPU#16: vdpa/1463
[ 3788.514054] Modules linked in: octep_vdpa virtio_net virtio_vdpa [last unloaded: virtio_vdpa]
[ 3788.514064] CPU: 16 UID: 0 PID: 1463 Comm: vdpa Tainted: G        W           6.18.0 #10 PREEMPT
[ 3788.514067] Tainted: [W]=WARN
[ 3788.514069] Hardware name: Marvell CN106XX board (DT)
[ 3788.514071] pstate: 63400009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
[ 3788.514074] pc : devm_kfree+0x84/0x98
[ 3788.514076] lr : devm_kfree+0x54/0x98
[ 3788.514079] sp : ffff800084e2f220
[ 3788.514080] x29: ffff800084e2f220 x28: ffff0003b2366000 x27: 000000000000003f
[ 3788.514085] x26: 000000000000003f x25: ffff000106f17c10 x24: 0000000000000080
[ 3788.514089] x23: ffff00045bb8ab08 x22: ffff00045bb8a000 x21: 0000000000000018
[ 3788.514093] x20: ffff0004355c3080 x19: ffff00045bb8aa00 x18: 0000000000080000
[ 3788.514098] x17: 0000000000000040 x16: 000000000000001f x15: 000000000007ffff
[ 3788.514102] x14: 0000000000000488 x13: 0000000000000005 x12: 00000000000fffff
[ 3788.514106] x11: ffffffffffffffff x10: 0000000000000005 x9 : ffff800080c8c05c
[ 3788.51…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;virtio_net: fix device mismatch in devm_kzalloc/devm_kfree&lt;/p&gt;
&lt;p&gt;Initial rss_hdr allocation uses virtio_device-&amp;gt;device,
but virtnet_set_queues() frees using net_device-&amp;gt;device.
This device mismatch causing below devres warning&lt;/p&gt;
&lt;p&gt;[ 3788.514041] ------------[ cut here ]------------
[ 3788.514044] WARNING: drivers/base/devres.c:1095 at devm_kfree+0x84/0x98, CPU#16: vdpa/1463
[ 3788.514054] Modules linked in: octep_vdpa virtio_net virtio_vdpa [last unloaded: virtio_vdpa]
[ 3788.514064] CPU: 16 UID: 0 PID: 1463 Comm: vdpa Tainted: G        W           6.18.0 #10 PREEMPT
[ 3788.514067] Tainted: [W]=WARN
[ 3788.514069] Hardware name: Marvell CN106XX board (DT)
[ 3788.514071] pstate: 63400009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
[ 3788.514074] pc : devm_kfree+0x84/0x98
[ 3788.514076] lr : devm_kfree+0x54/0x98
[ 3788.514079] sp : ffff800084e2f220
[ 3788.514080] x29: ffff800084e2f220 x28: ffff0003b2366000 x27: 000000000000003f
[ 3788.514085] x26: 000000000000003f x25: ffff000106f17c10 x24: 0000000000000080
[ 3788.514089] x23: ffff00045bb8ab08 x22: ffff00045bb8a000 x21: 0000000000000018
[ 3788.514093] x20: ffff0004355c3080 x19: ffff00045bb8aa00 x18: 0000000000080000
[ 3788.514098] x17: 0000000000000040 x16: 000000000000001f x15: 000000000007ffff
[ 3788.514102] x14: 0000000000000488 x13: 0000000000000005 x12: 00000000000fffff
[ 3788.514106] x11: ffffffffffffffff x10: 0000000000000005 x9 : ffff800080c8c05c
[ 3788.51…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-23046</guid>
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