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Bug 716640 - sys-kernel/gentoo-sources: Unspecified vulnerability (CVE-2020-9391)
Summary: sys-kernel/gentoo-sources: Unspecified vulnerability (CVE-2020-9391)
Alias: None
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Security
Depends on:
Reported: 2020-04-08 05:12 UTC by GLSAMaker/CVETool Bot
Modified: 2020-04-08 05:12 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description GLSAMaker/CVETool Bot gentoo-dev 2020-04-08 05:12:44 UTC
CVE-2020-9391 (
  An issue was discovered in the Linux kernel 5.4 and 5.5 through 5.5.6 on the
  AArch64 architecture. It ignores the top byte in the address passed to the
  brk system call, potentially moving the memory break downwards when the
  application expects it to move upwards, aka CID-dcde237319e6. This has been
  observed to cause heap corruption with the GNU C Library malloc

This is for arm kernel.