CVE-2024-57857

Kernel memory access via stale RDMA netdev pointer

Published Jan 15, 2025 · Updated Aug 5, 2026

Use-after-free in Linux kernel 5.3 through 6.12.8 allows local users to access kernel memory or crash the system through RDMA/siw. The siw_device structure retains a direct net_device pointer after the network device can be freed, and siw_query_port dereferences that stale link. Reachability requires a configured Soft-iWARP device and local low-privileged access; the stale object can expose or corrupt kernel memory and cause a kernel panic.

CVSS severity7.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux kernel 5.3 through 6.12.8 allows local users to access kernel memory or crash the system through RDMA/siw. The siw_device structure retains a direct net_device pointer after the network device can be freed, and siw_query_port dereferences that stale link. Reachability requires a configured Soft-iWARP device and local low-privileged access; the stale object can expose or corrupt kernel memory and cause a kernel panic.

The record

CVE
CVE-2024-57857
Published
Jan 15, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.3
  2. Affected versionversion=bdcf26bf9b3acb03c8f90387cfc6474fc8ac5521 <16b87037b48889d21854c8e97aec8a1baf2642b3
  3. Affected versionversion=bdcf26bf9b3acb03c8f90387cfc6474fc8ac5521 <4eafeb4f021c50d13f199239d913b37de3c83135

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.3; version=bdcf26bf9b3acb03c8f90387cfc6474fc8ac5521 <16b87037b48889d21854c8e97aec8a1baf2642b3; version=bdcf26bf9b3acb03c8f90387cfc6474fc8ac5521 <4eafeb4f021c50d13f199239d913b37de3c83135

Published CVSS scores

6.7SUSECVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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