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Bug 790842 (CVE-2020-23856) - dev-util/cflow: Use-after-free vulnerability (CVE-2020-23856)
Summary: dev-util/cflow: Use-after-free vulnerability (CVE-2020-23856)
Status: IN_PROGRESS
Alias: CVE-2020-23856
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal trivial (vote)
Assignee: Gentoo Security
URL:
Whiteboard: ~3 [upstream]
Keywords:
Depends on:
Blocks:
 
Reported: 2021-05-18 17:12 UTC by Sam James
Modified: 2021-07-29 18:10 UTC (History)
1 user (show)

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


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Description Sam James archtester gentoo-dev Security 2021-05-18 17:12:51 UTC
Description:
"Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src/parser.c, which could cause a denial of service via the pointer variable caller->callee."

https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284
https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html
Comment 1 NATTkA bot gentoo-dev 2021-07-29 17:22:22 UTC Comment hidden (obsolete)
Comment 2 NATTkA bot gentoo-dev 2021-07-29 17:30:37 UTC Comment hidden (obsolete)
Comment 3 NATTkA bot gentoo-dev 2021-07-29 17:38:33 UTC Comment hidden (obsolete)
Comment 4 NATTkA bot gentoo-dev 2021-07-29 17:46:41 UTC Comment hidden (obsolete)
Comment 5 NATTkA bot gentoo-dev 2021-07-29 18:02:40 UTC Comment hidden (obsolete)
Comment 6 NATTkA bot gentoo-dev 2021-07-29 18:10:55 UTC
Package list is empty or all packages have requested keywords.