SECUFOCUSNOW
Home›CVE index›CVE-2025-21718
Review reviewHigh

CVE-2025-21718

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 timer races against user threads Rose timers only acquire the socket spinlock, without checking if the socket is owned by one user thread. Add a check and rearm the timers if needed. BUG: KASAN: slab-use-after-free in rose_timer_expiry+0x31d/0x360 net/rose/rose_timer.c:174 Read of size 2 at addr ffff88802f09b82a by task swapper/0/0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc5-syzkaller-00172-gd1bf27c4e176 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/20...

CVSS
7
EPSS
0.16%
5.92% percentile
CISA KEV
Not listed
Published
2025.02.27
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.16%
Technical severityCVSS 7

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net: rose: fix timer races against user threads Rose timers only acquire the socket spinlock, without checking if the socket is owned by one user thread. Add a check and rearm the timers if needed. BUG: KASAN: slab-use-after-free in rose_timer_expiry+0x31d/0x360 net/rose/rose_timer.c:174 Read of size 2 at addr ffff88802f09b82a by task swapper/0/0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc5-syzkaller-00172-gd1bf27c4e176 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/20...

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
>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 52f5aff33ca73b2c2fa93f40a3de308012e63cf4, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0d5bca3be27bfcf8f980f2fed49b6cbb7dafe4a1, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1409b45d4690308c502c6caf22f01c3c205b4717, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f55c88e3ca5939a6a8a329024aed8f3d98eea8e4, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 51c128ba038cf1b79d605cbee325919b45ab95a5, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1992fb261c90e9827cf5dc3115d89bb0853252c9, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 58051a284ac18a3bb815aac6289a679903ddcc3f, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5de7665e0a0746b5ad7943554b34db8f8614a196, >= 2.6.12, >= V3.1.6, >= 2.6.12 < 6.1.129, >= 6.2 < 6.6.76, >= 6.7 < 6.12.13, >= 6.13 < 6.13.2
Fixed versions
6.1.129, 6.6.76, 6.12.13, 6.13.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC S7-1500 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:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-362, CWE-416