ntfs3: fix out-of-bounds read in decompress_lznt
Priority LOW 35Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00176 7th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.15.212, 6.1.178, 6.6.145 +4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-80598
- 2026-10-03 Alias added: GHSA-3h3p-2268-63w8
- 2026-10-18 CISA SSVC decision points changed
References
Other 7
- https://git.kernel.org/stable/c/1113fa5b01a47a1a4cdbb9c695197ca6215f02a8
- https://git.kernel.org/stable/c/61415ffa365d2eca6986914afd0d1412444aa1dd
- https://git.kernel.org/stable/c/bd77afca2ae9b6d44d37902e3ad672ebb028b070
- https://git.kernel.org/stable/c/c694f8ea2611e7413b3f04ee47e04a9b7b45817b
- https://git.kernel.org/stable/c/ff05a98150ebb2b03919a9c05c576681e86abbb7
- https://git.kernel.org/stable/c/a93980141253c932aa6ae5d4422d90e0162dc774
- https://git.kernel.org/stable/c/7160a57192fb16d7a6fa9b7f5c7ac341d2444a89
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Sources
- CVE-2026-80598 · CVE Program
- CVE-2026-80598 · NVD
- FIRST EPSS
- GHSA-3h3p-2268-63w8 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-80598 · Red Hat security data · CC BY 4.0
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