Vulnerability Details : CVE-2021-3506
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.
Products affected by CVE-2021-3506
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.12:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.12:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.12:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.12:rc3:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3506
0.37%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 58 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3506
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:N/A:C |
3.9
|
7.8
|
NIST | |
|
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
1.8
|
5.2
|
NIST |
CWE ids for CVE-2021-3506
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2021-3506
-
https://www.openwall.com/lists/oss-security/2021/03/28/2
oss-security - Linux kernel: f2fs: out-of-bounds memory access bugMailing List;Patch;Third Party Advisory
-
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2520013.html
[PATCH] f2fs: fix to avoid out-of-bounds memory accessMailing List;Patch;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1944298
1944298 – (CVE-2021-3506) CVE-2021-3506 kernel: Out of bounds memory access bug in get_next_net_page() in fs/f2fs/node.cIssue Tracking;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
[SECURITY] [DLA 2690-1] linux-4.19 security updateMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/05/08/1
oss-security - Re: Linux kernel: f2fs: out-of-bounds memory access bugMailing List;Patch;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20210611-0007/
CVE-2021-3506 Linux Kernel Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
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