CVE-2023-0266
Linux Kernel Use-After-Free Vulnerability - [Actively Exploited]
Description
A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e
INFO
Published Date :
Jan. 30, 2023, 2:15 p.m.
Last Modified :
Aug. 29, 2023, 5:59 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
6.0
Exploitability Score :
1.3
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Linux kernel contains a use-after-free vulnerability that allows for privilege escalation to gain ring0 access from the system user.
Apply updates per vendor instructions.
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4
Public PoC/Exploit Available at Github
CVE-2023-0266 has a 4 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-0266.
| URL | Resource |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4 | Mailing List Patch Vendor Advisory |
| https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e | Patch Third Party Advisory |
| https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html | Mailing List Third Party Advisory |
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).
Demo showing Claude Opus does not find CVE-2023-0266
Python C
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
A collection of links related to Linux kernel security and exploitation
linux-kernel kernel-exploitation exploit privilege-escalation security
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-0266 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-0266 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 -
Modified Analysis by [email protected]
Aug. 29, 2023
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.2 *cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14 up to (excluding) 4.14.303 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.270 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.229 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.163 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.88 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.6 -
CVE Modified by [email protected]
May. 03, 2023
Action Type Old Value New Value Changed Description A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e Added Reference https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 06, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4 Mailing List, Patch, Vendor Advisory Changed Reference Type https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e No Types Assigned https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e Patch, Third Party Advisory Changed Reference Type https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1 No Types Assigned https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1 Patch, Third Party Advisory Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.2 *cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-0266 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-2023-0266
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} -0.02%
score
0.35544
percentile