CVE-2022-2585
kernel: posix cpu timer use-after-free may lead to local privilege escalation
Severity Score
7.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track*
*SSVC
Descriptions
It was discovered that when exec'ing from a non-leader thread, armed POSIX CPU timers would be left on a list but freed, leading to a use-after-free.
Se descubrió que al ejecutar desde un subproceso no líder, los temporizadores de CPU POSIX armados se dejaban en una lista pero se liberaban, lo que generaba un use-after-free.
A use-after-free flaw was found in the Linux kernel’s POSIX CPU timers functionality in the way a user creates and then deletes the timer in the non-leader thread of the program. This flaw allows a local user to crash or potentially escalate their privileges on the system.
*Credits:
An independent security researcher working with SSD Secure Disclosure
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track*
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2022-07-29 CVE Reserved
- 2022-08-11 CVE Published
- 2024-01-20 EPSS Updated
- 2024-09-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-416: Use After Free
CAPEC
References (9)
| URL | Tag | Source |
|---|---|---|
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2585 | Issue Tracking | |
| https://ubuntu.com/security/notices/USN-5564-1 | Third Party Advisory |
|
| https://ubuntu.com/security/notices/USN-5565-1 | Third Party Advisory |
|
| https://ubuntu.com/security/notices/USN-5566-1 | Third Party Advisory |
|
| https://ubuntu.com/security/notices/USN-5567-1 | Third Party Advisory |
|
| https://www.openwall.com/lists/oss-security/2022/08/09/7 | Issue Tracking |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://lore.kernel.org/lkml/20220809170751.164716-1-cascardo@canonical.com/T/#u | 2024-01-19 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-2585 | 2022-11-02 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2114874 | 2022-11-02 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.7 < 6.0 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 6.0" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 22.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "22.04" | lts |
Affected
| ||||||