Vulnerability Name:

CVE-2021-3506 (CCN-200460)

Assigned:2021-04-19
Published:2021-04-19
Updated:2022-01-21
Summary:An out-of-bounds (OOB) memory access flaw was found in fs/f2fs/node.c in the f2fs module in the Linux kernel in versions before 5.12.0-rc4. A bounds check failure allows a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
CVSS v3 Severity:7.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H)
6.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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): None
Availibility (A): High
6.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H)
5.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): Complete
5.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-3506

Source: MLIST
Type: Mailing List, Patch, Third Party Advisory
[oss-security] 20210508 Re: Linux kernel: f2fs: out-of-bounds memory access bug

Source: CCN
Type: Red Hat Bugzilla - Bug 1944298
(CVE-2021-3506) - CVE-2021-3506 kernel: Out of bounds memory access bug in get_next_net_page() in fs/f2fs/node.c

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1944298

Source: XF
Type: UNKNOWN
linux-kernel-cve20213506-dos(200460)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20210611-0007/

Source: CCN
Type: Linux Kernel Web site
The Linux Kernel Archives

Source: MISC
Type: Mailing List, Patch, Third Party Advisory
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2520013.html

Source: MISC
Type: Mailing List, Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/03/28/2

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 5.12)
  • OR cpe:/o:linux:linux_kernel:5.12:-:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:5.12:rc1:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:5.12:rc2:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:5.12:rc3:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/a:netapp:cloud_backup:-:*:*:*:*:*:*:*
  • OR cpe:/o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h300s:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h500s:-:*:*:*:*:*:*:*

    • Configuration 6:
  • cpe:/o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h700s:-:*:*:*:*:*:*:*

    • Configuration 7:
  • cpe:/o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h300e:-:*:*:*:*:*:*:*

    • Configuration 8:
  • cpe:/o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h500e:-:*:*:*:*:*:*:*

    • Configuration 9:
  • cpe:/o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h700e:-:*:*:*:*:*:*:*

    • Configuration 10:
  • cpe:/o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h410s:-:*:*:*:*:*:*:*

    • Configuration 11:
  • cpe:/o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
  • AND
  • cpe:/h:netapp:h410c:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:5.12.0:rc3:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    linux linux kernel *
    linux linux kernel 5.12 -
    linux linux kernel 5.12 rc1
    linux linux kernel 5.12 rc2
    linux linux kernel 5.12 rc3
    debian debian linux 9.0
    netapp cloud backup -
    netapp solidfire baseboard management controller firmware -
    netapp h300s firmware -
    netapp h300s -
    netapp h500s firmware -
    netapp h500s -
    netapp h700s firmware -
    netapp h700s -
    netapp h300e firmware -
    netapp h300e -
    netapp h500e firmware -
    netapp h500e -
    netapp h700e firmware -
    netapp h700e -
    netapp h410s firmware -
    netapp h410s -
    netapp h410c firmware -
    netapp h410c -
    linux linux kernel 5.12.0 rc3