Bug 1872803 (CVE-2020-24241) - CVE-2020-24241 nasm: use-after-free in saa_wbytes function in nasmlib/saa.c
Summary: CVE-2020-24241 nasm: use-after-free in saa_wbytes function in nasmlib/saa.c
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2020-24241
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1872804
Blocks: 1872807
TreeView+ depends on / blocked
 
Reported: 2020-08-26 16:20 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-02-16 19:25 UTC (History)
6 users (show)

Fixed In Version: nasm 2.15.05rc1
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Clone Of:
Environment:
Last Closed: 2020-08-28 01:17:31 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2020-08-26 16:20:58 UTC 
In Netwide Assembler (NASM) 2.15rc10, there is heap use-after-free in saa_wbytes in nasmlib/saa.c.

Reference:
https://bugzilla.nasm.us/show_bug.cgi?id=3392707

Upstream patch:
https://github.com/netwide-assembler/nasm/commit/6ac6ac57e3d01ea8ed4ea47706eb724b59176461
Comment 1 Guilherme de Almeida Suckevicz 2020-08-26 16:22:12 UTC 
Created nasm tracking bugs for this issue:

Affects: fedora-all [bug 1872804]
Comment 3 Todd Cullum 2020-08-27 19:29:48 UTC 
Statement:

nasm as shipped with Red Hat Enterprise Linux 7 and 8 are not affected by this flaw because the vulnerable code was introduced in a newer version of nasm.
Comment 4 Product Security DevOps Team 2020-08-28 01:17:31 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-24241
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