CVE-2026-81885

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Source
https://cve.org/CVERecord?id=CVE-2026-81885
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81885.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-81885
Aliases
  • GHSA-43wr-4j49-rcxj
Downstream
Published
2026-09-22T15:13:53Z
Modified
2026-09-24T08:26:16Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
radare2: Infinite relocation-chain loop causes denial of service in radare2 NE parser
Details

radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's NE relocation fixup-chain parser was vulnerable because the NE relocation parser followed fixup chains without an active iteration limit or cycle detection. The vulnerability is triggered by opening a crafted NE executable whose in-bounds relocation entry points back to itself instead of reaching 0xffff. The parser repeatedly processed the same relocation and allocated another relocation object on each iteration. This can cause denial of service through continuous CPU and memory consumption. This issue is fixed in version 6.2.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-770",
        "CWE-835"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81885.json"
}
References

Affected packages

Git / github.com/radareorg/radare2

Affected ranges

Type
GIT
Repo
https://github.com/radareorg/radare2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
93d794caa7c2f08413106255d49546e544c1f9f0
Fixed
e1fc278734ad62f933fc6f91edb29e4ba732f402
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "6.2.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.10.0
0.10.1
0.10.2
0.10.3
0.10.4
0.10.4-termux4
0.10.5
0.10.6
0.8.6
0.8.8
0.9
0.9.2
0.9.4
0.9.6
0.9.7
0.9.8
0.9.8-rc1
0.9.8-rc2
0.9.8-rc3
0.9.8-rc4
0.9.9
1.*
1.0
1.0.0
1.0.1
1.0.2
1.1.0
1.2.0
1.2.0-git
1.3.0
1.3.0-git
1.4.0
1.5.0
1.6.0
2.*
2.0.0
2.0.1
2.1.0
2.2.0
2.4.0
2.5.0
2.6.0
2.6.9
2.7.0
2.8.0
2.9.0
3.*
3.0.0
3.0.1
3.1.0
3.1.1
3.1.2
3.1.3
3.2.0
3.2.1
3.3.0
3.4.0
3.4.1
3.5.0
3.5.1
3.6.0
3.7.0
3.7.1
3.8.0
3.9.0
4.*
4.0.0
4.1.0
4.1.1
4.2.0
4.2.1
4.3.0
4.3.1
4.4.0
4.5.1
5.*
5.0.0
5.1.0
5.1.1
5.2.0
5.2.1
5.3.0
5.3.1
5.4.0
5.4.0-git
5.4.2
5.5.0
5.5.2
5.5.4
5.6.0
5.6.2
5.6.4
5.6.6
5.6.8
5.7.0
5.7.2
5.7.4
5.7.6
5.7.8
5.8.0
5.8.2
5.8.4
5.8.6
5.8.8
5.9.0
5.9.2
5.9.4
5.9.6
5.9.8
6.*
6.0.0
6.0.2
6.0.4
6.0.6
6.0.7
6.0.8
6.1.0
6.1.2
6.1.4
6.1.6
6.1.8
Other
Continuous-Windows
continuous
radare2-windows-nightly
termux
wip
release-5.*
release-5.0.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81885.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "116891561864950078353440028978128700642",
            "length":  3616
        },
        "id":  "CVE-2026-81885-122d44c4",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/radareorg/radare2/commit/93d794caa7c2f08413106255d49546e544c1f9f0",
        "target":  {
            "file":  "libr/bin/format/ne/ne.c",
            "function":  "r_bin_ne_get_relocs"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "159805372102998391665718571285202793650",
                "213141963446448432678786400799141927693",
                "291515990195204007982964134198196681483",
                "213442907298489013778599891597321996085",
                "57774963356026399453630038423746742290",
                "331388228254795634295627019091190034931",
                "314301363171666843219663917052306411506",
                "52447573953890850893500885288735005519",
                "139713738916693354321992741257778661319",
                "249148684233463294728736429471276089677",
                "109852531673847455891166204912954874968",
                "147239400936954388854739636135646228768",
                "5027758247941671645430909308131236523",
                "281281381926365158569074520759712683774",
                "230605374057710062660403399773789812904",
                "84381984337080148916274705280975291442",
                "339537485204412513716164590705202200335",
                "277434200741666757861181062139360990610",
                "116365601445880261390554464975864555844",
                "305468964214101179431226812134508433631",
                "68282674760270044384630716722320700841",
                "173196955053583882698576930088650583509"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-81885-7ce12d72",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/radareorg/radare2/commit/93d794caa7c2f08413106255d49546e544c1f9f0",
        "target":  {
            "file":  "libr/bin/format/ne/ne.c"
        }
    }
]
vanir_signatures_modified 
"2026-09-24T08:26:16Z"