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Review reviewHigh

CVE-2024-26872

Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, linux kernel

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Do not register event handler until srpt device is fully setup Upon rare occasions, KASAN reports a use-after-free Write in srpt_refresh_port(). This seems to be because an event handler is registered before the srpt device is fully setup and a race condition upon error may leave a partially setup event handler in place. Instead, only register the event handler after srpt device initialization is complete.

CVSS
7
EPSS
0.24%
14.9% percentile
CISA KEV
Not listed
Published
2024.04.17
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.24%
Technical severityCVSS 7

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Do not register event handler until srpt device is fully setup Upon rare occasions, KASAN reports a use-after-free Write in srpt_refresh_port(). This seems to be because an event handler is registered before the srpt device is fully setup and a race condition upon error may leave a partially setup event handler in place. Instead, only register the event handler after srpt device initialization is complete.

Affected product and versions

Product
Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, linux kernel
Affected versions
>= a42d985bd5b234da8b61347a78dc3057bf7bb94d < bdd895e0190c464f54f84579e7535d80276f0fc5, >= a42d985bd5b234da8b61347a78dc3057bf7bb94d < 6413e78086caf7bf15639923740da0d91fdfd090, >= a42d985bd5b234da8b61347a78dc3057bf7bb94d < e362d007294955a4fb929e1c8978154a64efdcb6, >= a42d985bd5b234da8b61347a78dc3057bf7bb94d < 85570b91e4820a0db9d9432098778cafafa7d217, >= a42d985bd5b234da8b61347a78dc3057bf7bb94d < 7104a00fa37ae898a827381f1161fa3286c8b346, >= a42d985bd5b234da8b61347a78dc3057bf7bb94d < ec77fa12da41260c6bf9e060b89234b980c5130f, >= a42d985bd5b234da8b61347a78dc3057bf7bb94d < c21a8870c98611e8f892511825c9607f1e2cd456, >= 3.3, >= 3.3 < 5.10.214, >= 5.11 < 5.15.153, >= 5.16 < 6.1.83, >= 6.2 < 6.6.23, >= 6.7 < 6.7.11, >= 6.8 < 6.8.2, 10.0
Fixed versions
5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416