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CVE-2024-47742 high CVSS 7.8

Path Traversal in Linux kernel (CVE-2024-47742)

Summary

Path traversal in Linux kernel (CVE-2024-47742). Successful exploitation can lead to full system takeover.

Original description

The description as published by the source.

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

firmware_loader: Block path traversal

Most firmware names are hardcoded strings, or are constructed from fairly
constrained format strings where the dynamic parts are just some hex
numbers or such.

However, there are a couple codepaths in the kernel where firmware file
names contain string components that are passed through from a device or
semi-privileged userspace; the ones I could find (not counting interfaces
that require root privileges) are:

  • lpfc_sli4_request_firmware_update() seems to construct the firmware
    filename from "ModelName", a string that was previously parsed out of
    some descriptor ("Vital Product Data") in lpfc_fill_vpd()
  • nfp_net_fw_find() seems to construct a firmware filename from a model
    name coming from nfp_hwinfo_lookup(pf->hwinfo, "nffw.partno"), which I
    think parses some descriptor that was read from the device.
    (But this case likely isn't exploitable because the format string looks
    like "netronome/nic_%s", and there shouldn't be any folders starting
    with "netronome/nic_". The previous case was different because there,
    the "%s" is at the start of the format string.)
  • module_flash_fw_schedule() is reachable from the
    ETHTOOL_MSG_MODULE_FW_FLASH_ACT netlink command, which is marked as
    GENL_UNS_ADMIN_PERM (meaning CAP_NET_ADMIN inside a user namespace is
    enough to pass the privilege check), and takes a userspace-provided
    firmware name.…

Source: NIST National Vulnerability Database NVD

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2024-47742 has been found in Linux kernel.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Linux kernel CVE-2024-47742" on the vendor's site.

CVE-2024-47742 (Linux kernel) — CWE-22 / CVSS v3 7.8
Attack vector: local / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

Path traversal (CWE-22) exists in Linux kernel.

📍 Affected scope

Check the vendor advisory for the affected versions of Linux kernel.

🔥 Severity

Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで Linux kernel を使っているサービスとバージョンを洗い出す。

  2. 2
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Linux Kernel
[{"type":"ECOSYSTEM","events":[{"introduced":"3.7.0"},{"fixed":"4.19.323"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.285"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.227"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.168"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.10.13"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.11.0"},{"fixed":"6.11.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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