Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-53092

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
24/06/2026
Last modified:
23/07/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> bpf: Fix linked reg delta tracking when src_reg == dst_reg<br /> <br /> Consider the case of rX += rX where src_reg and dst_reg are pointers to<br /> the same bpf_reg_state in adjust_reg_min_max_vals(). The latter first<br /> modifies the dst_reg in-place, and later in the delta tracking, the<br /> subsequent is_reg_const(src_reg)/reg_const_value(src_reg) reads the<br /> post-{add,sub} value instead of the original source.<br /> <br /> This is problematic since it sets an incorrect delta, which sync_linked_regs()<br /> then propagates to linked registers, thus creating a verifier-vs-runtime<br /> mismatch. Fix it by just skipping this corner case.

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:*:*:*:*:*:*:*:* 6.11 (including) 6.18.33 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 7.0.10 (excluding)

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


References to Advisories, Solutions, and Tools