CVE-2023-0266
Linux Kernel Use-After-Free Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 7
- EPSS
- 3.70% 백분위 88.4% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2023.04.20
- 공개일
- 2023.01.30
CISA KEV에 등록된 실제 악용 확인 취약점
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
공급사 Linux
제품 Kernel
영향 버전 4.14, 10.0, >= 4.14 < 4.14.303, >= 4.15 < 4.19.270, >= 4.20 < 5.4.229, >= 5.5 < 5.10.163, >= 5.11 < 5.15.88, >= 5.16 < 6.1.6
수정 버전 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.88, 6.1.6
Apply updates per vendor instructions.
조치 기한: 2023.04.20CVSS 벡터 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-416
KEV 등록일 2023.03.30
랜섬웨어 캠페인 사용 미확인
CISA 비고 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; https://nvd.nist.gov/vuln/detail/CVE-2023-0266
EPSS 데이터 기준일 2026.06.27