CVE-2021-34981
published 2024-05-07CVE-2021-34981: Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected…
PriorityP431medium6.7CVSS 3.1
AVLACLPRHUINSUCHIHAH
EPSS
0.20%
10.0th percentile
Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the CMTP module. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11977.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.10.46-1 (bookworm) | linux 5.10.46-1 (bookworm) |
| linux | kernel | — | — |
| linux | linux_kernel | < 5.10.42 | 5.10.42 |
| linux | linux_kernel | >= 0 < 5.10.46-1 | 5.10.46-1 |
| linux | linux_kernel | >= 0 < 5.10.46-1 | 5.10.46-1 |
| linux | linux_kernel | >= 0 < 5.10.46-1 | 5.10.46-1 |
| linux | linux_kernel | >= 0 < 5.10.46-1 | 5.10.46-1 |
CVSS provenance
nvdv3.16.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvdv3.07.5HIGHCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
osv6.7MEDIUM
vendor_debian6.7MEDIUM
vendor_redhat6.7MEDIUM
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Red Hat
kernel: Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
vendor_redhat·2021-10-25·CVSS 6.7
CVE-2021-34981 [MEDIUM] CWE-416 kernel: Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
kernel: Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the CMTP module. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11977.
A flaw was found in the Linux kernel's CAPI over Bluetooth connection code. An at
Debian
CVE-2021-34981: linux - Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerabilit...
vendor_debian·2021·CVSS 6.7
CVE-2021-34981 [MEDIUM] CVE-2021-34981: linux - Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerabilit...
Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the CMTP module. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11977.
Scope: local
bookworm: resolved (fixed in 5.10.46-1)
bullseye: resolved (fixed in 5.10.46-1)
forky: resolved (fixed in 5.10.46-1)
sid: resolved (fixed in 5.10.4
GHSA
GHSA-98qh-xfx7-vfqv: Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
ghsa_unreviewed·2024-05-08
CVE-2021-34981 [HIGH] CWE-415 GHSA-98qh-xfx7-vfqv: Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the CMTP module. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11977.
OSV
CVE-2021-34981: Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
osv·2024-05-07·CVSS 6.7
CVE-2021-34981 [MEDIUM] CVE-2021-34981: Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the CMTP module. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11977.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-05-07
Published