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Review reviewHigh

CVE-2025-71075

Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP

In the Linux kernel, the following vulnerability has been resolved: scsi: aic94xx: fix use-after-free in device removal path The asd_pci_remove() function fails to synchronize with pending tasklets before freeing the asd_ha structure, leading to a potential use-after-free vulnerability. When a device removal is triggered (via hot-unplug or module unload), race condition can occur. The fix adds tasklet_kill() before freeing the asd_ha structure, ensuring all scheduled tasklets complete before cleanup proceeds.

CVSS
7.8
EPSS
0.13%
2.62% percentile
CISA KEV
Not listed
Published
2026.01.14
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.13%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: scsi: aic94xx: fix use-after-free in device removal path The asd_pci_remove() function fails to synchronize with pending tasklets before freeing the asd_ha structure, leading to a potential use-after-free vulnerability. When a device removal is triggered (via hot-unplug or module unload), race condition can occur. The fix adds tasklet_kill() before freeing the asd_ha structure, ensuring all scheduled tasklets complete before cleanup proceeds.

Affected product and versions

Product
Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Affected versions
>= 2908d778ab3e244900c310974e1fc1c69066e450 < c8f6f88cd1df35155258285c4f43268b361819df, >= 2908d778ab3e244900c310974e1fc1c69066e450 < 278455a82245a572aeb218a6212a416a98e418de, >= 2908d778ab3e244900c310974e1fc1c69066e450 < b3e655e52b98a1d3df41c8e42035711e083099f8, >= 2908d778ab3e244900c310974e1fc1c69066e450 < e354793a7ab9bb0934ea699a9d57bcd1b48fc27b, >= 2908d778ab3e244900c310974e1fc1c69066e450 < a41dc180b6e1229ae49ca290ae14d82101c148c3, >= 2908d778ab3e244900c310974e1fc1c69066e450 < 751c19635c2bfaaf2836a533caa3663633066dcf, >= 2908d778ab3e244900c310974e1fc1c69066e450 < f6ab594672d4cba08540919a4e6be2e202b60007, >= 2.6.19, >= V3.1.6, >= 2.6.19.1 < 5.10.248, >= 5.11 < 5.15.198, >= 5.16 < 6.1.160, >= 6.2 < 6.6.120, >= 6.7 < 6.12.64, >= 6.13 < 6.18.3, 2.6.19, 6.19
Fixed versions
5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 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:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2025-71075 — Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | SECUFOCUS NOW