⚠ Actively exploited
Added to CISA KEV on 2023-03-30. Federal agencies required to patch by 2023-04-20. Required action: Apply updates per vendor instructions..

CVE-2023-0266 — Use After Free in Kernel

CWE-416 — Use After Free53 documents14 sources
Severity
7.0HIGHNVD
OSV8.8OSV5.5VulnCheck7.9
EPSS
0.2%
top 63.42%
CISA KEV
KEV
Added 2023-03-30
Due 2023-04-20
Exploit
Exploited in wild
Active exploitation observed
Affected products
12
Linux KernelDebian LinuxDebian Linux+9 more
Timeline
PublishedJan 30
KEV addedMar 30
KEV dueApr 20
Latest updateFeb 14
CISA Required Action: Apply updates per vendor instructions.

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

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.0 | Impact: 5.9

Affected Packages14 packages

▶CVEListV5linux/linux_kernel4.14 — 56b88b50565cd8b946a2d00b0c83927b7ebb055e
▶NVDlinux/linux_kernel4.14 — 4.14.303+5
▶Debianlinux/linux_kernel< 5.10.162-1+3
▶Ubuntulinux/linux_kernel< 4.15.0-208.220+2
▶debiandebian/linux< linux 6.1.7-1 (bookworm)

Also affects: Debian Linux 10.0

Patches

Patch: git.kernel.org ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

26
Project0
Analyzing a Modern In-the-wild Android Exploit - Project Zero↗2023-09-01
▶
OSV
linux-snapdragon vulnerabilities↗2023-04-19
▶
OSV
linux-intel-iotg vulnerabilities↗2023-04-11
▶
OSV
linux-gcp vulnerabilities↗2023-04-11
▶
OSV
linux-bluefield vulnerabilities↗2023-04-05
▶

📋Vendor Advisories

26
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS↗2024-02-14
▶
Android
CVE-2023-0266: Kernel↗2023-05-01
▶
Chrome
Long Term Support Channel Update for ChromeOS: CVE-2023-0266↗2023-04-27
▶
Ubuntu
Linux kernel (Qualcomm Snapdragon) vulnerabilities↗2023-04-19
▶
Ubuntu
Linux kernel (Intel IoTG) vulnerabilities↗2023-04-11
▶