CVEvulnerability
CVE-2026-53092
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-06-24
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 6.4 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-393
Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix linked reg delta tracking when src_reg == dst_reg
Consider the case of rX += rX where src_reg and dst_reg are pointers to
the same bpf_reg_state in adjust_reg_min_max_vals(). The latter first
modifies the dst_reg in-place, and later in the delta tracking, the
subsequent is_reg_const(src_reg)/reg_const_value(src_reg) reads the
post-{add,sub} value instead of the original source.
This is problematic since it sets an incorrect delta, which sync_linked_regs()
then propagates to linked registers, thus creating a verifier-vs-runtime
mismatch. Fix it by just skipping this corner case.
Affected configurations
• linux linux kernel (>= 6.11 < 6.18.33)
• linux linux kernel (>= 6.19 < 7.0.10)
Related
Weakness · CWE (1)
- CWE-393 Return of Wrong Status Code weakness
References
- https://git.kernel.org/stable/c/1509c1ae9185ec7103899967ed788b6eebab3fcc git.kernel.org
- https://git.kernel.org/stable/c/cc86a8b0a1c54d2bccf6f68cf49b82dea91b84de Patch
- https://git.kernel.org/stable/c/d7f14173c0d5866c3cae759dee560ad1bed10d2e Patch
- https://git.kernel.org/stable/c/d88e8e4a3b52bd5b2ff3eceba4b29d1b5506d066 Patch
- https://access.redhat.com/security/cve/CVE-2026-53092 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492362 Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53092.json Third Party Advisory