4.9

CVE-2020-27835

A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Infiniband Hfi1 Driver Version <= 5.9
Linux ≫ Infiniband Hfi1 Driver Version 5.10 Update rc1
Linux ≫ Infiniband Hfi1 Driver Version 5.10 Update rc2
Linux ≫ Infiniband Hfi1 Driver Version 5.10 Update rc3
Linux ≫ Infiniband Hfi1 Driver Version 5.10 Update rc4
Linux ≫ Infiniband Hfi1 Driver Version 5.10 Update rc5
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.31% 0.222
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 4.4 0.8 3.6
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NIST 4.9 3.9 6.9
AV:L/AC:L/Au:N/C:N/I:N/A:C
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://bugzilla.redhat.com/show_bug.cgi?id=1901709
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