CVE-2026-80598 json
ntfs3: fix out-of-bounds read in decompress_lznt
published 2026-08-28 2 mo ago modified 2026-10-16 23 d ago also EUVD-2026-67474
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
In the Linux kernel, the following vulnerability has been resolved:
ntfs3: fix out-of-bounds read in decompress_lznt
decompress_lznt() does not validate array index bounds before accessing the decompression table. A corrupted NTFS3 image with invalid compressed data can trigger an out-of-bounds read.
Add index bounds checking to prevent the OOB access.
Patch / fix
- Linux Linux 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
- linux Debian 12 6.1.180-1
- linux Debian 13 6.12.100-1
- linux Debian 14 7.1.5-1
debian advisories DEBIAN-CVE-2026-80598
- linux Ubuntu 22.04 LTS 5.15.0-198.208
- linux Ubuntu 24.04 LTS 6.8.0-147.147
- linux Ubuntu 26.04 LTS 7.0.0-38.38
- linux-aws Ubuntu 22.04 LTS 5.15.0-1117.124
- linux-aws Ubuntu 24.04 LTS 6.8.0-1067.70
- linux-aws Ubuntu 26.04 LTS 7.0.0-1014.14
- linux-gcp Ubuntu 22.04 LTS 5.15.0-1118.128
- linux-gcp Ubuntu 24.04 LTS 6.8.0-1071.79
ubuntu advisories UBUNTU-CVE-2026-80598
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- git.kernel.org/stable/c/1113fa5b01a47a1a4cdbb9c695197ca6215f02a8 commit
- git.kernel.org/stable/c/61415ffa365d2eca6986914afd0d1412444aa1dd commit
- git.kernel.org/stable/c/bd77afca2ae9b6d44d37902e3ad672ebb028b070 commit
- git.kernel.org/stable/c/c694f8ea2611e7413b3f04ee47e04a9b7b45817b commit
- git.kernel.org/stable/c/ff05a98150ebb2b03919a9c05c576681e86abbb7 commit
- git.kernel.org/stable/c/a93980141253c932aa6ae5d4422d90e0162dc774 commit
- git.kernel.org/stable/c/7160a57192fb16d7a6fa9b7f5c7ac341d2444a89 commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-80598 updated cvss 5.5
kernel: ntfs3: fix out-of-bounds read in decompress_lznt
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernelnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 23 d ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Linux Linux
Classification
- Technology feeds
References
- git.kernel.org /stable/c/1113fa5b01a47a1a4cdbb9c695197ca6215f02a8
- git.kernel.org /stable/c/61415ffa365d2eca6986914afd0d1412444aa1dd
- git.kernel.org /stable/c/bd77afca2ae9b6d44d37902e3ad672ebb028b070
- git.kernel.org /stable/c/c694f8ea2611e7413b3f04ee47e04a9b7b45817b
- git.kernel.org /stable/c/ff05a98150ebb2b03919a9c05c576681e86abbb7
- git.kernel.org /stable/c/a93980141253c932aa6ae5d4422d90e0162dc774
- git.kernel.org /stable/c/7160a57192fb16d7a6fa9b7f5c7ac341d2444a89
Sources
- CVE List CVE-2026-80598
- NVD CVE-2026-80598
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