7.8
HIGH
CVE-2021-32606
Linux Kernel CAN ISOTP Use-After-Free Privilege Escalation Vulnerability
Description

In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.)

INFO

Published Date :

May 11, 2021, 11:15 p.m.

Last Modified :

March 25, 2024, 1:15 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2021-32606 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-32606 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
1 Fedoraproject fedora

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Linux & Android Kernel Vulnerability research and exploitation

exploitation kernel-bypass kernel-exploitation kernel-security linux linux-kernel-hacking pwn vulnerability-research lpe privilege-escalation privilege-escalation-exploits

Updated: 2 weeks, 4 days ago
27 stars 5 fork 5 watcher
Born at : Sept. 28, 2023, 3:15 p.m. This repo has been linked 19 different CVEs too.

None

Updated: 3 months ago
6 stars 0 fork 0 watcher
Born at : Feb. 25, 2023, 10:40 a.m. This repo has been linked 178 different CVEs too.

A collection of links related to Linux kernel security and exploitation

linux-kernel kernel-exploitation exploit privilege-escalation security

Updated: 1 day, 12 hours ago
5639 stars 911 fork 911 watcher
Born at : Nov. 13, 2016, 10:21 p.m. This repo has been linked 239 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-32606 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-32606 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Mar. 25, 2024

    Action Type Old Value New Value
    Added Reference MITRE https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b17c400aeb44daf041627722581ade527bb3c1d [No types assigned]
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/
  • Modified Analysis by [email protected]

    Sep. 07, 2021

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210625-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20210625-0001/ Third Party Advisory
  • CVE Modified by [email protected]

    Jun. 25, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210625-0001/ [No Types Assigned]
  • Reanalysis by [email protected]

    Jun. 04, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (including) 5.12.2 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.9
  • Modified Analysis by [email protected]

    Jun. 03, 2021

    Action Type Old Value New Value
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/05/28/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/05/28/1 Mailing List, Patch, Third Party Advisory
  • CVE Modified by [email protected]

    May. 28, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/05/28/1 [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 26, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/ Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 20, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/ [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 19, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/05/12/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/05/12/1 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/05/13/2 No Types Assigned http://www.openwall.com/lists/oss-security/2021/05/13/2 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/05/14/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/05/14/1 Mailing List, Third Party Advisory
    Changed Reference Type https://www.openwall.com/lists/oss-security/2021/05/11/16 No Types Assigned https://www.openwall.com/lists/oss-security/2021/05/11/16 Mailing List, Third Party Advisory
    Added CWE NIST CWE-416
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (including) 5.12.2
  • CVE Modified by [email protected]

    May. 14, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/05/14/1 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 14, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/05/13/2 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 12, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/05/12/1 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-32606 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-32606 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.12065

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability