Home/CVE/The packet_set_ring function in net/packet/af_packet.c in the Linux kernel through 4.10.6 does not properly validate cer
CVE

CVE-2017-7308

The packet_set_ring function in net/packet/af_packet.c in the Linux kernel through 4.10.6 does not properly validate cer

The packet_set_ring function in net/packet/af_packet.c in the Linux kernel through 4.10.6 does not properly validate certain block-size data, which allows local users to cause a denial of service (integer signedness error and out-of-bounds write), or gain privileges (if the CAP_NET_RAW capability is held), via crafted system calls.

HIGH · CVSS 7.8 EPSS 0.87
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • Reliable Metasploit module available (rank: Good) - weaponised exploit code
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
Look this up elsewhere - one-click external pivots
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
▸ How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2017-7308, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.
Triage: should I act now? Four signals, and they are not interchangeable:
CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked. EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal. CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score. Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.
How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.
Then what - two workflows:
Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits. PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.
Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).
◆

ATT&CK techniques

1

Techniques this CVE enables - linked via CWECAPECATT&CK. High◆ = named directly in ATT&CK or Nuclei templates.

T1068 · Exploitation for Privilege Escalation
▤ Build a SIEM detection for these techniques
⬡

Weakness Classification

CWE-681Incorrect Conversion between Numeric Types
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

9
linux kernel>= 2.6.27 and < 3.2.89
linux kernel>= 3.3 and < 3.10.107
linux kernel>= 3.11 and < 3.12.74
linux kernel>= 3.13 and < 3.16.44
linux kernel>= 3.17 and < 3.18.52
linux kernel>= 3.19 and < 4.1.41
linux kernel>= 4.2 and < 4.4.66
linux kernel>= 4.5 and < 4.9.26
⚠

Public Exploits & PoCs

20
These PoC and exploit links come from public sources and are not verified to be safe or functional. Review the code before running anything, and treat unverified entries as untrusted.
localLinux 4.8.0 < 4.8.0-46 - AF_PACKET packet_set_ring Privilege Escalation (Metasploit)verified
localLinux Kernel 4.8.0-41-generic (Ubuntu) - Packet Socket Local Privilege Escalationverified
localLinux Kernel 4.8.0-34 < 4.8.0-45 (Ubuntu / Linux Mint) - Packet Socket Local Privilege Escalation2018-12-29
pocanldori/CVE-2017-7308 (nomi-sec)
poc0xTo/linux-kernel-exploits (trickest)
pocARPSyndicate/cvemon (trickest)
pocAl1ex/LinuxEelvation (trickest)
pocC0dak/linux-kernel-exploits (trickest)
pocC0dak/local-root-exploit- (trickest)
pocCKmaenn/kernel-exploits (trickest)
pocDe4dCr0w/Linux-kernel-EoP-exp (trickest)
pocFeng4/linux-kernel-exploits (trickest)
pocHaxorSecInfec/autoroot.sh (trickest)
pocJlSakuya/Linux-Privilege-Escalation-Exploits (trickest)
pocLouisLiuNova/container-escape-exploits (trickest)
pocMecyu/googlecontainers (trickest)
pocMetarget/metarget (trickest)
pocMicr067/linux-kernel-exploits (trickest)
pocwww.exploit-db.com · 41994www.exploit-db.com
pocwww.exploit-db.com · 44654www.exploit-db.com
📦

Fixed versions by distribution

30
The package version that resolves this CVE on each Linux distribution, from the vendor’s published security data. fixed in shows a patched version exists; open means the package is listed as affected with no fix yet.
oracle alldtrace-modules-3.8.13-118.18.4.el6uek fixed in 0:0.4.5-3.el6
oracle alldtrace-modules-3.8.13-118.18.4.el7uek open
oracle alldtrace-modules-4.1.12-94.3.6.el6uek fixed in 0:0.6.0-4.el6
oracle alldtrace-modules-4.1.12-94.3.6.el7uek fixed in 0:0.6.0-4.el7
oracle allkernel open
oracle allkernel-abi-whitelists open
oracle allkernel-debug fixed in 0:2.6.32-754.el6
oracle allkernel-debug-devel fixed in 0:2.6.32-754.el6
oracle allkernel-devel open
oracle allkernel-firmware open
oracle allkernel-headers open
oracle allkernel-tools open
oracle allkernel-tools-libs fixed in 0:3.10.0-514.21.1.0.1.el7
oracle allkernel-tools-libs-devel fixed in 0:3.10.0-514.21.1.0.1.el7
oracle allkernel-uek open
oracle allkernel-uek-debug open
oracle allkernel-uek-debug-devel fixed in 0:2.6.39-400.297.12.el5uek
oracle allkernel-uek-devel fixed in 0:2.6.39-400.297.12.el6uek
oracle allkernel-uek-firmware open
oracle allperf open
oracle allpython-perf fixed in 0:2.6.32-754.el6
suse sle15kernel-default fixed in 0:4.12.14-23.1
suse sle15kernel-default-extra fixed in 0:4.12.14-23.1
suse sle15kernel-docs fixed in 0:4.12.14-23.1
suse sle15kernel-macros fixed in 0:4.12.14-23.1
suse sle15kernel-obs-build fixed in 0:4.12.14-23.1
suse sle15kernel-source fixed in 0:4.12.14-23.1
suse sle15kernel-syms fixed in 0:4.12.14-23.1
suse sle15kernel-vanilla-base fixed in 0:4.12.14-23.1
suse sle15reiserfs-kmp-default fixed in 0:4.12.14-23.1
⚙

Metasploit Modules

1
Weaponised exploit modules in the Metasploit Framework. Rank is Metasploit’s reliability rating - Excellent/Great/Good means dependable, real-world exploit code (a strong “act now” signal), not a fragile PoC.
Goodexploit/linux/local/af_packet_packet_set_ring_priv_esc2017-03-29
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · [email protected]
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Mar 2017 · 08:59 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

30
rhsaRHSA-2018:1854Important
suse-csafSUSE-SU-2017:2525-1
suse-csafSUSE-SU-2017:2342-1
suse-csafSUSE-SU-2017:1990-1
android-securityANDROID-2017-07-01High
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/97234Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1297Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1298Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1308Third Party Advisory
https://googleprojectzero.blogspot.com/2017/05/exploiting-linux-kernel-via-packet.htmlThird Party Advisory
https://patchwork.ozlabs.org/patch/744811/Third Party Advisory
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