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7.1
CVSSv3

CVE-2021-3506

Published: 19/04/2021 Updated: 07/11/2023
CVSS v2 Base Score: 5.6 | Impact Score: 7.8 | Exploitability Score: 3.9
CVSS v3 Base Score: 7.1 | Impact Score: 5.2 | Exploitability Score: 1.8
VMScore: 498
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:C

Vulnerability 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 prior to 5.12.0-rc4. A bounds check failure allows a local malicious user 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.

Vulnerability Trend

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Vendor Advisories

Ubuntu Security Notice: USN-5339-1: Linux kernel vulnerabilities
Several security issues were fixed in the Linux kernel ...
Ubuntu Security Notice: USN-5343-1: Linux kernel vulnerabilities
Several security issues were fixed in the Linux kernel ...
Amazon Linux 2: ALAS2KERNEL-5.4-2022-004
A flaw was found in the Linux kernels implementation of wifi fragmentation handling An attacker with the ability to transmit within the wireless transmission range of an access point can abuse a flaw where previous contents of wifi fragments can be unintentionally transmitted to another device (CVE-2020-24586) A flaw was found in the Linux kernel ...
Amazon Linux 2: ALAS2KERNEL-5.10-2022-002
A flaw was found in the Linux kernels implementation of wifi fragmentation handling An attacker with the ability to transmit within the wireless transmission range of an access point can abuse a flaw where previous contents of wifi fragments can be unintentionally transmitted to another device (CVE-2020-24586) A flaw was found in the Linux kernel ...
Arch Linux Issues:
An out-of-bounds (OOB) memory access flaw was found in fs/f2fs/nodec in the f2fs module in the Linux kernel 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 ...

Mailing Lists

Full Disclosure: Re: Linux kernel: f2fs: out-of-bounds memory access bug
Hi, RedHat has assigned CVE-2021-3506 to this issue Regards, butt3rflyh4ck On Sat, May 8, 2021 at 12:24 AM butt3rflyh4ck <butterflyhuangxx () gmail com> wrote: -- Active Defense Lab of Venustech ...

References

CWE-125https://www.openwall.com/lists/oss-security/2021/03/28/2https://bugzilla.redhat.com/show_bug.cgi?id=1944298http://www.openwall.com/lists/oss-security/2021/05/08/1https://security.netapp.com/advisory/ntap-20210611-0007/https://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlhttps://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg2520013.htmlhttps://nvd.nist.govhttps://ubuntu.com/security/notices/USN-5339-1
CVSSv3
CVSSv2
CVSSv3
VMScore
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