cve-2026-48104
LOW CVSS 3.6 csaf_opensuse
Description
SUSE CVE-2026-48104
Timeline
- Published
- 2026-06-09 02:20 UTC
- Last Modified
- 2026-07-15
CVSS Details
CVSS details not available.
Affected Products
No product information available.
References
No references available.
Linked Vulnerabilities
No linked vulnerabilities found.
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"text": "7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain an uninitialized heap read in the SquashFS archive handler caused by a sparsely populated index array. In the SquashFS handler, _blockToNode is allocated with capacity for every metadata block but populated only when an inode crosses a block boundary, so a crafted image with few inodes spanning many blocks leaves most slots holding raw heap contents (the underlying allocator does not zero-initialize POD storage). When OpenDir looks up an attacker-influenced blockIndex (derived from the RootInode superblock field), it reads two of these uninitialized slots and passes them as the left/right bounds of a binary search over _nodesPos, which dereferences the midpoint without bounds checking; if the resulting value happens to match the search key, the returned index is used to read a full node struct from _nodes whose fields feed further directory parsing, forming a chained OOB read primitive that is heap-layout-dependent and not reliably triggerable. The SquashFS handler is enabled by default in stock 7z.dll and the issue triggers during Open() with no interaction beyond opening the file; impact is denial of service from wild-pointer dereference and potential heap information disclosure, with no write primitive. Version 26.01 fixes the issue.",
"title": "Description of the CVE"
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"category": "general",
"text": "7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain an uninitialized heap read in the SquashFS archive handler caused by a sparsely populated index array. In the SquashFS handler, _blockToNode is allocated with capacity for every metadata block but populated only when an inode crosses a block boundary, so a crafted image with few inodes spanning many blocks leaves most slots holding raw heap contents (the underlying allocator does not zero-initialize POD storage). When OpenDir looks up an attacker-influenced blockIndex (derived from the RootInode superblock field), it reads two of these uninitialized slots and passes them as the left/right bounds of a binary search over _nodesPos, which dereferences the midpoint without bounds checking; if the resulting value happens to match the search key, the returned index is used to read a full node struct from _nodes whose fields feed further directory parsing, forming a chained OOB read primitive that is heap-layout-dependent and not reliably triggerable. The SquashFS handler is enabled by default in stock 7z.dll and the issue triggers during Open() with no interaction beyond opening the file; impact is denial of service from wild-pointer dereference and potential heap information disclosure, with no write primitive. Version 26.01 fixes the issue.",
"title": "CVE description"
}
],
"product_status": {
"known_affected": [
"SUSE Linux Enterprise Server 16.0:7zip",
"SUSE Linux Enterprise Server for SAP applications 16.0:7zip",
"openSUSE Leap 16.0:7zip"
],
"recommended": [
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"SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Module for Basesystem 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP4-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP4-TERADATA:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP5-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP6-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 16.0:7zip-26.01-160000.1.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP4:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP5:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP6:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP applications 16.0:7zip-26.01-160000.1.1",
"openSUSE Leap 16.0:7zip-26.01-160000.1.1"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2026-48104",
"url": "https://www.suse.com/security/cve/CVE-2026-48104"
},
{
"category": "external",
"summary": "SUSE Security Ratings",
"url": "https://www.suse.com/support/security/rating/"
},
{
"category": "external",
"summary": "SUSE Bug 1267862 for CVE-2026-48104",
"url": "https://bugzilla.suse.com/1267862"
},
{
"category": "external",
"summary": "Advisory link for SUSE-SU-2026:22347-1",
"url": "https://lists.suse.com/pipermail/sle-updates/2026-July/047792.html"
},
{
"category": "external",
"summary": "Advisory link for SUSE-SU-2026:2696-1",
"url": "https://lists.suse.com/pipermail/sle-updates/2026-June/047736.html"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Linux Enterprise Desktop 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Module for Basesystem 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP4-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP4-TERADATA:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP5-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP6-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 16.0:7zip-26.01-160000.1.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP4:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP5:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP6:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP applications 16.0:7zip-26.01-160000.1.1",
"openSUSE Leap 16.0:7zip-26.01-160000.1.1"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 3.6,
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L",
"version": "3.1"
},
"products": [
"SUSE Linux Enterprise Desktop 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise High Performance Computing 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Module for Basesystem 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP4-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP4-TERADATA:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP5-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP6-LTSS:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server 16.0:7zip-26.01-160000.1.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP4:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP5:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP6:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP Applications 15 SP7:7zip-26.01-150400.9.6.1",
"SUSE Linux Enterprise Server for SAP applications 16.0:7zip-26.01-160000.1.1",
"openSUSE Leap 16.0:7zip-26.01-160000.1.1"
]
}
],
"threats": [
{
"category": "impact",
"date": "2026-06-05T18:02:23Z",
"details": "low"
}
],
"title": "CVE-2026-48104"
}
]
}