# CVE-2026-89616: linux: In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: fix info-leak on partial LZNT decompre... CVE-2026-89616 is fixed in 57 products on 1 platform, first by DEBIAN-CVE-2026-89616, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-89616 - Priority: High - CVSS: 7.5 (high) - EPSS: 0.0042 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 11, 2026 ## Description In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: fix info-leak on partial LZNT decompress in ni_read_frame() ni_read_frame() decompresses an LZNT $DATA frame into the vmapped target pages and then trusts decompress_lznt()'s return value: unc_size = decompress_lznt(frame_ondisk, ondisk_size, frame_mem, frame_size); if ((ssize_t)unc_size < 0) err = unc_size; else if (!unc_size || unc_size > frame_size) err = -EINVAL; decompress_lznt() stops as soon as the compressed stream is exhausted (e.g. a zero chunk header) and returns the number of bytes it actually wrote, which may be far less than frame_size. The bytes between unc_size and frame_size are never written. The only memset() that follows zeroes the region beyond i_valid; when the frame lies entirely within the file's valid size that memset() does not run, so the gap retains whatever was in the just-vmapped pages. All pages are then marked uptodate and returned to userspace, disclosing uninitialized (recently-freed) kernel page memory. A crafted compressed file whose stream decompresses to only a few bytes leaks the remainder of every frame on a plain read(2), which is enough to recover kernel pointers and defeat KASLR. Zero the [unc_size, frame_size) tail immediately after a successful LZNT decompress so the remainder reads back as zero. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | bpftool-debuginfo amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | bpftool6.12 amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | bpftool6.18 amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | bpftool6.18-debuginfo amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-debuginfo amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-devel amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-headers amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-livepatch-6.1.188-233.385 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-livepatch-6.12.110-135.201 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel-livepatch-6.18.51-120.162 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel-modules-extra amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-modules-extra-common amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-tools amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-tools-debuginfo amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel-tools-devel amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | kernel6.12 amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-devel amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-headers amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-tools amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | kernel6.18 amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-debuginfo amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-debuginfo-common-aarch64 amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-debuginfo-common-x86_64 amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-devel amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-headers amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-modules-extra amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-modules-extra-common amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-tools amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-tools-debuginfo amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | kernel6.18-tools-devel amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | linux Debian 12.15 (bookworm) | 6.1.190-1 | [DEBIAN-CVE-2026-89616](https://patchblox.com/security/data/fix/linux/debian-cve-2026-89616.md) | Sep 23, 2026 | | Linux | linux Debian 13.5 (trixie) | 6.12.111-1 | [DEBIAN-CVE-2026-89616](https://patchblox.com/security/data/fix/linux/debian-cve-2026-89616.md) | Sep 23, 2026 | | Linux | linux Debian 14 | 7.2.6-1 | [DEBIAN-CVE-2026-89616](https://patchblox.com/security/data/fix/linux/debian-cve-2026-89616.md) | Sep 23, 2026 | | Linux | linux-6.12 Debian 12.15 (bookworm) | 6.12.111-1~deb12u1 | [DEBIAN-CVE-2026-89616](https://patchblox.com/security/data/fix/linux/debian-cve-2026-89616.md) | Sep 23, 2026 | | Linux | microvm-kernel6.18 amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | perf amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | perf-debuginfo amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | perf6.12 amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | perf6.18 amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | perf6.18-debuginfo amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | python3-perf amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | python3-perf-debuginfo amzn 2023 | 1:6.1.188-233.385.amzn2023 | [ALAS2023-2026-3197](https://patchblox.com/security/data/fix/linux/alas2023-2026-3197.md) | Nov 7, 2026 | | Linux | python3-perf6.12 amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.110-135.201.amzn2023 | [ALAS2023-2026-3196](https://patchblox.com/security/data/fix/linux/alas2023-2026-3196.md) | Nov 7, 2026 | | Linux | python3-perf6.18 amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | | Linux | python3-perf6.18-debuginfo amzn 2023 | 1:6.18.51-120.162.amzn2023 | [ALAS2023-2026-3187](https://patchblox.com/security/data/fix/linux/alas2023-2026-3187.md) | Nov 7, 2026 | --- Data as of 2026-11-08T06:59:42Z 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 Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.