# CVE-2026-97563: smb: client: reject out-of-bounds DataOffset in CIFSSMBRead()

CVE-2026-97563 is fixed in 70 products on 1 platform, first by DEBIAN-CVE-2026-97563, released October 2, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-97563
- Priority: High
- CVSS: 7.3 (Moderate)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 25, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97563

## Description

smb: client: reject out-of-bounds DataOffset in CIFSSMBRead() (bsc#1283877).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | bpftool-debuginfo amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | bpftool6.12 amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | bpftool6.18 amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | bpftool6.18-debuginfo amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | dtb-aarch64 opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-64kb opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-64kb sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-azure opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-azure sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-debuginfo amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-default opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-default sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-default-base opensuse-leap 16.0 | 6.12.0-160000.40.1.160000.2.29 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-default-base sles 16.0 | 6.12.0-160000.40.1.160000.2.29 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-devel amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-docs opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-docs sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-headers amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-kvmsmall opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-kvmsmall sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-livepatch-6.1.190-237.431 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-livepatch-6.12.114-139.210 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel-livepatch-6.18.56-126.188 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel-modules-extra amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-modules-extra-common amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-obs-build opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-obs-qa opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-obs-qa sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-rt opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-source opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-source sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-syms opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-syms sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel-tools amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-tools-debuginfo amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-tools-devel amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | kernel-zfcpdump opensuse-leap 16.0 | 6.12.0-160000.40.1 | [OPENSUSE-SU-2026:22167-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22167-1.md) | Nov 7, 2026 |
| Linux | kernel-zfcpdump sles 16.0 | 6.12.0-160000.40.1 | [SUSE-SU-2026:24446-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24446-1.md) | Nov 7, 2026 |
| Linux | kernel6.12 amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-devel amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-headers amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-tools amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | kernel6.18 amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-debuginfo amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-debuginfo-common-aarch64 amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-debuginfo-common-x86_64 amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-devel amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-headers amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-modules-extra amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-modules-extra-common amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-tools amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-tools-debuginfo amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | kernel6.18-tools-devel amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | linux Debian 14 | 7.2.7-1 | [DEBIAN-CVE-2026-97563](https://patchblox.com/security/data/fix/linux/debian-cve-2026-97563.md) | Oct 2, 2026 |
| Linux | microvm-kernel amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | microvm-kernel6.18 amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | perf amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | perf-debuginfo amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | perf6.12 amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | perf6.18 amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | perf6.18-debuginfo amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | python3-perf amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | python3-perf-debuginfo amzn 2023 | 1:6.1.190-237.431.amzn2023 | [ALAS2023-2026-3389](https://patchblox.com/security/data/fix/linux/alas2023-2026-3389.md) | Nov 10, 2026 |
| Linux | python3-perf6.12 amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.114-139.210.amzn2023 | [ALAS2023-2026-3402](https://patchblox.com/security/data/fix/linux/alas2023-2026-3402.md) | Nov 10, 2026 |
| Linux | python3-perf6.18 amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |
| Linux | python3-perf6.18-debuginfo amzn 2023 | 1:6.18.56-126.188.amzn2023 | [ALAS2023-2026-3390](https://patchblox.com/security/data/fix/linux/alas2023-2026-3390.md) | Nov 10, 2026 |

---

Data as of 2026-11-11T07:45:43Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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