xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots
CVE-2026-98447 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-98447, released October 19, 2026. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots LOLLM noticed that the inode btree root formatting methods copy too many bytes -- there's only one set of keys in node blocks, not two. This causes memory corruption of whatever's beyond the buffers.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel-livepatch-6.18.56-125.164 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| linux · Debian 14 | 7.2.9-1 | DEBIAN-CVE-2026-98447 | Oct 19, 2026 |
| microvm-kernel6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
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