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Review reviewHigh

CVE-2025-71086

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: net: rose: fix invalid array index in rose_kill_by_device() rose_kill_by_device() collects sockets into a local array[] and then iterates over them to disconnect sockets bound to a device being brought down. The loop mistakenly indexes array[cnt] instead of array[i]. For cnt < ARRAY_SIZE(array), this reads an uninitialized entry; for cnt == ARRAY_SIZE(array), it is an out-of-bounds read. Either case can lead to an invalid socket pointer dereference and also leaks references taken via sock_hold(). Fix the index to use i.

CVSS
7.8
EPSS
0.12%
2.17% 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 probability0.12%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net: rose: fix invalid array index in rose_kill_by_device() rose_kill_by_device() collects sockets into a local array[] and then iterates over them to disconnect sockets bound to a device being brought down. The loop mistakenly indexes array[cnt] instead of array[i]. For cnt < ARRAY_SIZE(array), this reads an uninitialized entry; for cnt == ARRAY_SIZE(array), it is an out-of-bounds read. Either case can lead to an invalid socket pointer dereference and also leaks references taken via sock_hold(). Fix the index to use i.

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
>= 12e5a4719c99d7f4104e7e962393dfb8baa1c591 < 819fb41ae54960f66025802400c9d3935eef4042, >= c0e527c532a07556ca44642f5873b002c44da22c < ed2639414d43ba037f798eaf619e878309310451, >= 3e0d1585799d8a991eba9678f297fd78d9f1846e < 1418c12cd3bba79dc56b57b61c99efe40f579981, >= ffced26692f83212aa09d0ece0213b23cc2f611d < 9f6185a32496834d6980b168cffcccc2d6b17280, >= 64b8bc7d5f1434c636a40bdcfcd42b278d1714be < b409ba9e1e63ccf3ab4cc061e33c1f804183543e, >= 64b8bc7d5f1434c636a40bdcfcd42b278d1714be < 92d900aac3a5721fb54f3328f1e089b44a861c38, >= 64b8bc7d5f1434c636a40bdcfcd42b278d1714be < 6595beb40fb0ec47223d3f6058ee40354694c8e4, >= bd7de4734535140fda33240c2335a07fdab6f88e, >= b10265532df7bc3666bc53261b7f03f0fd14b1c9, >= 5.10.206 < 5.10.248, >= 5.15.146 < 5.15.198, >= 6.1.70 < 6.1.160, >= 6.6.9 < 6.6.120, >= 4.19.304 < 4.20, >= 5.4.266 < 5.5, >= 6.7, >= V3.1.6, >= 6.7.1 < 6.12.64, >= 6.13 < 6.18.4, 6.7
Fixed versions
4.20, 5.5, 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.4

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-129