vulnerability

Ubuntu: (Multiple Advisories) (CVE-2024-46770): Linux kernel vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Sep 18, 2024
Added
Dec 13, 2024
Modified
Aug 18, 2025

Description

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

ice: Add netif_device_attach/detach into PF reset flow

Ethtool callbacks can be executed while reset is in progress and try to
access deleted resources, e.g. getting coalesce settings can result in a
NULL pointer dereference seen below.

Reproduction steps:
Once the driver is fully initialized, trigger reset:
# echo 1 > /sys/class/net/<interface>/device/reset
when reset is in progress try to get coalesce settings using ethtool:
# ethtool -c <interface>

BUG: kernel NULL pointer dereference, address: 0000000000000020
PGD 0 P4D 0
Oops: Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 11 PID: 19713 Comm: ethtool Tainted: G S 6.10.0-rc7+ #7
RIP: 0010:ice_get_q_coalesce+0x2e/0xa0 [ice]
RSP: 0018:ffffbab1e9bcf6a8 EFLAGS: 00010206
RAX: 000000000000000c RBX: ffff94512305b028 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff9451c3f2e588 RDI: ffff9451c3f2e588
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffff9451c3f2e580 R11: 000000000000001f R12: ffff945121fa9000
R13: ffffbab1e9bcf760 R14: 0000000000000013 R15: ffffffff9e65dd40
FS: 00007faee5fbe740(0000) GS:ffff94546fd80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000020 CR3: 0000000106c2e005 CR4: 00000000001706f0
Call Trace:
<TASK>
ice_get_coalesce+0x17/0x30 [ice]
coalesce_prepare_data+0x61/0x80
ethnl_default_doit+0xde/0x340
genl_family_rcv_msg_doit+0xf2/0x150
genl_rcv_msg+0x1b3/0x2c0
netlink_rcv_skb+0x5b/0x110
genl_rcv+0x28/0x40
netlink_unicast+0x19c/0x290
netlink_sendmsg+0x222/0x490
__sys_sendto+0x1df/0x1f0
__x64_sys_sendto+0x24/0x30
do_syscall_64+0x82/0x160
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7faee60d8e27

Calling netif_device_detach() before reset makes the net core not call
the driver when ethtool command is issued, the attempt to execute an
ethtool command during reset will result in the following message:

netlink error: No such device

instead of NULL pointer dereference. Once reset is done and
ice_rebuild() is executing, the netif_device_attach() is called to allow
for ethtool operations to occur again in a safe manner.

Solutions

ubuntu-upgrade-linux-image-6-8-0-1002-gkeopubuntu-upgrade-linux-image-6-8-0-1015-gkeubuntu-upgrade-linux-image-6-8-0-1016-raspiubuntu-upgrade-linux-image-6-8-0-1017-ibmubuntu-upgrade-linux-image-6-8-0-1017-oracleubuntu-upgrade-linux-image-6-8-0-1017-oracle-64kubuntu-upgrade-linux-image-6-8-0-1018-oemubuntu-upgrade-linux-image-6-8-0-1019-gcpubuntu-upgrade-linux-image-6-8-0-1019-nvidiaubuntu-upgrade-linux-image-6-8-0-1019-nvidia-64kubuntu-upgrade-linux-image-6-8-0-1019-nvidia-lowlatencyubuntu-upgrade-linux-image-6-8-0-1019-nvidia-lowlatency-64kubuntu-upgrade-linux-image-6-8-0-1020-awsubuntu-upgrade-linux-image-6-8-0-1020-azureubuntu-upgrade-linux-image-6-8-0-1020-azure-fdeubuntu-upgrade-linux-image-6-8-0-50-genericubuntu-upgrade-linux-image-6-8-0-50-generic-64kubuntu-upgrade-linux-image-6-8-0-50-lowlatencyubuntu-upgrade-linux-image-6-8-0-50-lowlatency-64kubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-22-04ubuntu-upgrade-linux-image-generic-64k-hwe-24-04ubuntu-upgrade-linux-image-generic-hwe-22-04ubuntu-upgrade-linux-image-generic-hwe-24-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-6-8ubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-classicubuntu-upgrade-linux-image-ibm-lts-24-04ubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04ubuntu-upgrade-linux-image-lowlatency-64k-hwe-24-04ubuntu-upgrade-linux-image-lowlatency-hwe-22-04ubuntu-upgrade-linux-image-lowlatency-hwe-24-04ubuntu-upgrade-linux-image-nvidiaubuntu-upgrade-linux-image-nvidia-6-8ubuntu-upgrade-linux-image-nvidia-64kubuntu-upgrade-linux-image-nvidia-64k-6-8ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04ubuntu-upgrade-linux-image-nvidia-hwe-22-04ubuntu-upgrade-linux-image-nvidia-lowlatencyubuntu-upgrade-linux-image-nvidia-lowlatency-64kubuntu-upgrade-linux-image-oem-22-04ubuntu-upgrade-linux-image-oem-22-04aubuntu-upgrade-linux-image-oem-22-04bubuntu-upgrade-linux-image-oem-22-04cubuntu-upgrade-linux-image-oem-22-04dubuntu-upgrade-linux-image-oem-24-04ubuntu-upgrade-linux-image-oem-24-04aubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-64kubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-22-04ubuntu-upgrade-linux-image-virtual-hwe-24-04
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