CVE-2017-1000112

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Source
https://nvd.nist.gov/vuln/detail/CVE-2017-1000112
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-1000112.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2017-1000112
Related
Published
2017-10-05T01:29:04Z
Modified
2024-06-30T12:01:22Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSGMORE _ipappenddata() calls ipufoappenddata() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skbprev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skbcopyandcsumbits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") on Oct 18 2005.

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.12.6-1

Ecosystem specific 

{
    "urgency": "low"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.12.6-1

Ecosystem specific 

{
    "urgency": "low"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.12.6-1

Ecosystem specific 

{
    "urgency": "low"
}