CVEvulnerability
CVE-2025-39823
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2025-09-16
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-129
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: use array_index_nospec with indices that come from guest
min and dest_id are guest-controlled indices. Using array_index_nospec()
after the bounds checks clamps these values to mitigate speculative execution
side-channels.
Affected configurations
• linux linux kernel (>= 4.19 < 5.4.298)
• linux linux kernel (>= 5.5 < 5.10.242)
• linux linux kernel (>= 5.11 < 5.15.191)
• linux linux kernel (>= 5.16 < 6.1.150)
• linux linux kernel (>= 6.2 < 6.6.104)
• linux linux kernel (>= 6.7 < 6.12.45)
• linux linux kernel (>= 6.13 < 6.16.5)
• linux linux kernel 6.17
• debian debian linux 11.0
Related
Weakness · CWE (1)
- CWE-129 Improper Validation of Array Index weakness
References
- https://git.kernel.org/stable/c/31a0ad2f60cb4816e06218b63e695eb72ce74974 Patch
- https://git.kernel.org/stable/c/33e974c2d5a82b2f9d9ba0ad9cbaabc1c8e3985f Patch
- https://git.kernel.org/stable/c/67a05679621b7f721bdba37a5d18665d3aceb695 Patch
- https://git.kernel.org/stable/c/72777fc31aa7ab2ce00f44bfa3929c6eabbeaf48 Patch
- https://git.kernel.org/stable/c/c87bd4dd43a624109c3cc42d843138378a7f4548 Patch
- https://git.kernel.org/stable/c/d51e381beed5e2f50f85f49f6c90e023754efa12 Patch
- https://git.kernel.org/stable/c/f49161646e03d107ce81a99c6ca5da682fe5fb69 Patch
- https://git.kernel.org/stable/c/f57a4bd8d6cb5af05b8ac1be9098e249034639fb Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html cert-portal.siemens.com