CVE-2020-35519
First published: Wed Dec 16 2020(Updated: )
An out-of-bounds (OOB) memory access flaw was found in x25_bind in net/x25/af_x25.c in the Linux kernel version v5.12-rc5. A bounds check failure allows a local attacker with a user account on the system 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's integrity and availability. As .x25_addr[] array comes from the user and is not necessarily NUL terminated. Using strnlen() instead of strlen() will prevent a read overflow problem.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.12<4.4.248 | |
| Linux Kernel | >=4.5<4.9.248 | |
| Linux Kernel | >=4.10<4.14.211 | |
| Linux Kernel | >=4.15<4.19.162 | |
| Linux Kernel | >=4.20<5.4.82 | |
| Linux Kernel | >=5.5<5.9.13 | |
| NetApp Cloud Backup | ||
| All of | ||
| NetApp SolidFire Baseboard Management Controller Firmware | ||
| NetApp SolidFire | ||
| All of | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| All of | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700S | ||
| NetApp H700S | ||
| All of | ||
| NetApp H300E | ||
| NetApp H300E Firmware | ||
| All of | ||
| NetApp H500S Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700E | ||
| NetApp H700E | ||
| All of | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| All of | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| Linux Kernel | =5.12-rc5 | |
| NetApp SolidFire Baseboard Management Controller Firmware | ||
| NetApp SolidFire | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700S | ||
| NetApp H700S | ||
| NetApp H300E | ||
| NetApp H300E Firmware | ||
| NetApp H500S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700E | ||
| NetApp H700E | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1908251
- https://security.netapp.com/advisory/ntap-20210618-0009/
- https://launchpad.net/bugs/cve/CVE-2020-35519
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1940204
- https://access.redhat.com/security/cve/cve-2020-35519
- https://www.openwall.com/lists/oss-security/2021/03/17/17
- https://security-tracker.debian.org/tracker/CVE-2020-35519
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35519
- https://nvd.nist.gov/vuln/detail/CVE-2020-35519
- https://ubuntu.com/security/CVE-2020-35519
Frequently Asked Questions
What is the severity of CVE-2020-35519?
CVE-2020-35519 is considered to have a high severity due to the potential for an attacker to exploit the out-of-bounds memory access flaw.
How do I fix CVE-2020-35519?
To fix CVE-2020-35519, you should upgrade to a patched version of the Linux kernel, specifically versions 5.10.223, 5.10.226, or later.
What products are affected by CVE-2020-35519?
CVE-2020-35519 affects multiple versions of the Linux kernel ranging from versions 2.6.12 to 5.9.13.
Can CVE-2020-35519 lead to system crashes?
Yes, CVE-2020-35519 can lead to system crashes or even a leak of internal kernel information.
Is there a workaround for CVE-2020-35519?
As a temporary measure, limiting user access and minimizing the number of local users can reduce the risk of exploitation until the vulnerability is patched.
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- canonical/netapp h700s
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