Vulnerability Name:

CVE-2023-0266 (CCN-245875)

Assigned:2023-01-13
Published:2023-01-13
Updated:2023-05-03
Summary:Linux Kernel could allow a local authenticated attacker to gain elevated privileges on the system, caused by a use-after-free in the ALSA PCM package. An attacker could exploit this vulnerability using missing locks in SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 to gain ring0 access from the system user.
CVSS v3 Severity:7.9 High (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H)
6.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): High
Availibility (A): High
7.9 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H)
6.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): High
Availibility (A): High
7.8 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.2 Medium (CCN CVSS v2 Vector: AV:A/AC:H/Au:S/C:P/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2023-0266

Source: XF
Type: UNKNOWN
linux-kernel-cve20230266-priv-esc(245875)

Source: CCN
Type: Linux Kernel GIT Repository
ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF

Source: cve-coordination@google.com
Type: Mailing List, Patch, Vendor Advisory
cve-coordination@google.com

Source: cve-coordination@google.com
Type: Patch, Third Party Advisory
cve-coordination@google.com

Source: cve-coordination@google.com
Type: Patch, Third Party Advisory
cve-coordination@google.com

Source: cve-coordination@google.com
Type: UNKNOWN
cve-coordination@google.com

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:9:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:9::nfv:*:*:*:*:*
    • Configuration RedHat 3:
  • cpe:/a:redhat:enterprise_linux:9::realtime:*:*:*:*:*
    • Configuration RedHat 4:
  • cpe:/a:redhat:enterprise_linux:9::appstream:*:*:*:*:*
    • Configuration RedHat 5:
  • cpe:/a:redhat:enterprise_linux:9::crb:*:*:*:*:*
    • Configuration RedHat 6:
  • cpe:/o:redhat:enterprise_linux:9:*:*:*:*:*:*:*
    • Configuration RedHat 7:
  • cpe:/o:redhat:enterprise_linux:9::baseos:*:*:*:*:*
    • Configuration RedHat 8:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*
    • Configuration RedHat 9:
  • cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*
    • Configuration RedHat 10:
  • cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*
    • Configuration RedHat 11:
  • cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*
    • Configuration RedHat 12:
  • cpe:/a:redhat:enterprise_linux:8::nfv:*:*:*:*:*
    • Configuration RedHat 13:
  • cpe:/a:redhat:enterprise_linux:8::realtime:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:8029
    P
    		kernel-docs-5.14.21-150500.53.2 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:7539
    P
    		kernel-64kb-5.14.21-150500.53.2 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:8090
    P
    		reiserfs-kmp-default-5.14.21-150500.53.2 on GA media (Moderate)
    2023-06-12
    oval:com.redhat.rhsa:def:20231659
    P
    		RHSA-2023:1659: kpatch-patch security update (Important)
    2023-04-05
    oval:com.redhat.rhsa:def:20231566
    P
    		RHSA-2023:1566: kernel security, bug fix, and enhancement update (Important)
    2023-04-04
    oval:com.redhat.rhsa:def:20231584
    P
    		RHSA-2023:1584: kernel-rt security and bug fix update (Important)
    2023-04-04
    oval:com.redhat.rhsa:def:20231469
    P
    		RHSA-2023:1469: kernel-rt security and bug fix update (Important)
    2023-03-27
    oval:com.redhat.rhsa:def:20231470
    P
    		RHSA-2023:1470: kernel security, bug fix, and enhancement update (Important)
    2023-03-27
    oval:com.redhat.rhsa:def:20231471
    P
    		RHSA-2023:1471: kpatch-patch security update (Important)
    2023-03-27
    oval:org.opensuse.security:def:51994
    P
    		Security update for the Linux Kernel (Important) (in QA)
    2023-02-09
    BACK
    linux linux kernel -