Medium severity · published Nov 23, 2020
CVE-2020-15436
Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a…
6.7
CVSS
0.9%
EPSS
No
On KEV
Description
Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.38 before 4.4.229; 4.5 before 4.9.229; 4.10 before 4.14.186; 4.15 before 4.19.130; 4.20 before 5.4.49; 5.5 before 5.7.6 · source: NVD
AF
A250 Firmware · Netapp
All versions, or not specified · source: NVD
AF
A700s Firmware · Netapp
All versions, or not specified · source: NVD
A5
Aff 500f Firmware · Netapp
All versions, or not specified · source: NVD
A8
Aff 8300 Firmware · Netapp
All versions, or not specified · source: NVD
A8
Aff 8700 Firmware · Netapp
All versions, or not specified · source: NVD
AA
Aff A400 Firmware · Netapp
All versions, or not specified · source: NVD
BF
Brocade Fabric Operating System Firmware · Broadcom
All versions, or not specified · source: NVD
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
FS
Fabric-attached Storage A400 Firmware · Netapp
All versions, or not specified · source: NVD
F5
Fas 500f Firmware · Netapp
All versions, or not specified · source: NVD
F8
Fas 8300 Firmware · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15436
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15436
Exploit
https://lkml.org/lkml/2020/6/7/379
Third Party Advisory
https://security.netapp.com/advisory/ntap-20201218-0002/
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