# CVE-2024-46770: ice: Add netif_device_attach/detach into PF reset flow

> A local attacker can trigger a kernel crash by running ethtool commands during a network interface reset, causing a denial of service.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Sep 2024
- **Updated:** 1 Jun 2026
- **Also known as:** AZL-49563, BELL-CVE-2024-46770, DEBIAN-CVE-2024-46770, GHSA-w6wg-4287-f4wf, ROOT-OS-DEBIAN-11-CVE-2024-46770, ROOT-OS-UBUNTU-2204-CVE-2024-46770, UBUNTU-CVE-2024-46770

## What is CVE-2024-46770?

CVE-2024-46770 is a medium-severity vulnerability in Linux kernel, published on 18 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2024-46770?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-46770?

Apply the vendor's patch.

## Is CVE-2024-46770 being exploited?

There is no known exploitation of CVE-2024-46770 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-46770 and fix it if it is affected.

What it is: CVE-2024-46770 is a medium-severity vulnerability in Linux kernel, published on 18 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-46770 in the wild and no public exploit code.

Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-46770/ (Markdown: https://insights.sbomify.com/CVE-2024-46770/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-46770
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-46770
- OSV: https://osv.dev/vulnerability/CVE-2024-46770

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-46770/
Summaries are generated and may contain mistakes; the official description above is the record.