# CVE-2024-57900: ila: serialize calls to nf_register_net_hooks()

> A race condition in the Linux kernel ILA module causes a use-after-free, potentially leading to system crashes or arbitrary code execution.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:** 15 Jan 2025
- **Updated:** 11 May 2026
- **Also known as:** BELL-CVE-2024-57900, DEBIAN-CVE-2024-57900, GHSA-v298-p3h5-pc6r, ROOT-OS-DEBIAN-12-CVE-2024-57900, UBUNTU-CVE-2024-57900

## What is CVE-2024-57900?

CVE-2024-57900 is a high-severity use after free vulnerability in Linux kernel, published on 15 Jan 2025. 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:

ila: serialize calls to nf_register_net_hooks()

syzbot found a race in ila_add_mapping() [1]

commit 031ae72825ce ("ila: call nf_unregister_net_hooks() sooner")
attempted to fix a similar issue.

Looking at the syzbot repro, we have concurrent ILA_CMD_ADD commands.

Add a mutex to make sure at most one thread is calling nf_register_net_hooks().

[1]
 BUG: KASAN: slab-use-after-free in rht_key_hashfn include/linux/rhashtable.h:159 [inline]
 BUG: KASAN: slab-use-after-free in __rhashtable_lookup.constprop.0+0x426/0x550 include/linux/rhashtable.h:604
Read of size 4 at addr ffff888028f40008 by task dhcpcd/5501

CPU: 1 UID: 0 PID: 5501 Comm: dhcpcd Not tainted 6.13.0-rc4-syzkaller-00054-gd6ef8b40d075 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
  __dump_stack lib/dump_stack.c:94 [inline]
  dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
  print_address_description mm/kasan/report.c:378 [inline]
  print_report+0xc3/0x620 mm/kasan/report.c:489
  kasan_report+0xd9/0x110 mm/kasan/report.c:602
  rht_key_hashfn include/linux/rhashtable.h:159 [inline]
  __rhashtable_lookup.constprop.0+0x426/0x550 include/linux/rhashtable.h:604
  rhashtable_lookup include/linux/rhashtable.h:646 [inline]
  rhashtable_lookup_fast include/linux/rhashtable.h:672 [inline]
  ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:127 [inline]
  ila_xlat_addr net/ipv6/ila/ila_xlat.c:652 [inline]
  ila_nf_input+0x1ee/0x620 net/ipv6/ila/ila_xlat.c:185
  nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
  nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626
  nf_hook.constprop.0+0x42e/0x750 include/linux/netfilter.h:269
  NF_HOOK include/linux/netfilter.h:312 [inline]
  ipv6_rcv+0xa4/0x680 net/ipv6/ip6_input.c:309
  __netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5672
  __netif_receive_skb+0x1d/0x160 net/core/dev.c:5785
  process_backlog+0x443/0x15f0 net/core/dev.c:6117
  __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6883
  napi_poll net/core/dev.c:6952 [inline]
  net_rx_action+0xa94/0x1010 net/core/dev.c:7074
  handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
  __do_softirq kernel/softirq.c:595 [inline]
  invoke_softirq kernel/softirq.c:435 [inline]
  __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
  irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
  sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2024-57900?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-57900?

Apply the vendor's patch.

## Is CVE-2024-57900 being exploited?

There is no known exploitation of CVE-2024-57900 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-2024-57900 and fix it if it is affected.

What it is: CVE-2024-57900 is a high-severity use after free vulnerability in Linux kernel, published on 15 Jan 2025. 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-2024-57900 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-2024-57900/ (Markdown: https://insights.sbomify.com/CVE-2024-57900/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-57900
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-57900
- OSV: https://osv.dev/vulnerability/CVE-2024-57900

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-57900/
Summaries are generated and may contain mistakes; the official description above is the record.