Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-53270

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
25/06/2026
Last modified:
08/07/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ipvs: clear the svc scheduler ptr early on edit<br /> <br /> ip_vs_edit_service() while unbinding the old scheduler clears<br /> the svc-&gt;scheduler ptr after the scheduler module initiates<br /> RCU callbacks. This can cause packets to use the old<br /> scheduler at the time when svc-&gt;sched_data is already freed<br /> after RCU grace period.<br /> <br /> Fix it by clearing the ptr early in ip_vs_unbind_scheduler(),<br /> before the done_service method schedules any RCU callbacks.<br /> <br /> Also, if the new scheduler fails to initialize when replacing<br /> the old scheduler, try to restore the old scheduler while still<br /> returning the error code.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 3.18.23 (including) 3.19 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.1.11 (including) 4.2 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.2.1 (including) 5.10.259 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.210 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.1.176 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.143 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.94 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.18.36 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 7.0.13 (excluding)
cpe:2.3:o:linux:linux_kernel:4.2:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.2:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.2:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.2:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.2:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools