Date: Fri, 19 Feb 2021 17:54:27 +0530 From: Rohit Keshri <rkeshri@...hat.com> To: oss-security@...ts.openwall.com Subject: CVE-2021-3411 kernel: broken KRETPROBES reports corruption of .text section while running a FTRACE stress tester Hello Team, A violation of memory access flaw was found while detecting a padding of int3 in the linking state in function can_optimize in arch/x86/kernel/kprobes/opt.c. In this problem a local attacker with a special user privilege may cause a threat to a system Integrity and Confidentiality, and may even lead to a denial of service problem. 'CVE-2021-3411' was assigned by Red Hat. Credit: Adam 'pi3' Zabrocki References: https://firstname.lastname@example.org/msg2410570.html https://lists.openwall.net/linux-kernel/2020/12/11/265 http://blog.pi3.com.pl/?p=831 Regards, .. Rohit Keshri / Red Hat Product Security Team PGP: OX01BC 858A 07B7 15C8 EF33 BFE2 2EEB 0CBC 84A4 4C2D secalert@...hat.com for urgent response
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