CVE-2022-4744
kernel: tun: avoid double free in tun_free_netdev
Severity Score
7.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track*
*SSVC
Descriptions
A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a double free vulnerability.
*Credits:
N/A
CVSS Scores
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User Interaction
Scope
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Attack Vector
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Confidentiality
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* Common Vulnerability Scoring System
SSVC
- Decision:Track*
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2022-12-26 CVE Reserved
- 2023-03-27 CVE Published
- 2023-04-18 First Exploit
- 2025-02-14 CVE Updated
- 2025-04-27 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-415: Double Free
- CWE-460: Improper Cleanup on Thrown Exception
- CWE-824: Access of Uninitialized Pointer
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| http://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.html | Third Party Advisory |
|
| https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html | Mailing List |
|
| https://security.netapp.com/advisory/ntap-20230526-0009 | Third Party Advisory |
|
| URL | Date | SRC |
|---|---|---|
| https://packetstorm.news/files/id/171912 | 2023-04-18 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e | 2023-11-07 | |
| https://access.redhat.com/security/cve/CVE-2022-4744 | 2024-03-19 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2156322 | 2024-03-19 |
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" | >= 5.5 < 5.10.136 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.136" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.11 < 5.15.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.15.12" | - |
Affected
| ||||||