Bug 806070 (CVE-2021-37600)

Summary:	<sys-apps/util-linux-2.37.1-r1: buffer overflow (CVE-2021-37600)
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	IN_PROGRESS ---
Severity:	normal	CC:	base-system
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/karelzak/util-linux/issues/1395
Whiteboard:	A3 [glsa?]
Package list:		Runtime testing required:	---
Bug Depends on:	809491
Bug Blocks:

Description John Helmert III archtester

2021-08-01 18:52:18 UTC

CVE-2021-37600:

An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attacker were able to use system resources in a way that leads to a large number in the /proc/sysvipc/sem file.

Unreleased patch: https://github.com/karelzak/util-linux/commit/1c9143d0c1f979c3daf10e1c37b5b1e916c22a1c):

Comment 1 Sam James archtester

2021-08-01 18:57:15 UTC

Upstream don't consider this an issue: https://github.com/karelzak/util-linux/issues/1395#issuecomment-888984731.

Comment 2 Larry the Git Cow gentoo-dev

2021-08-11 12:30:52 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=da60551412d12ea1b7b0fe27a7603fb7873d63c2

commit da60551412d12ea1b7b0fe27a7603fb7873d63c2
Author:     Lars Wendler <polynomial-c@gentoo.org>
AuthorDate: 2021-08-11 12:25:48 +0000
Commit:     Lars Wendler <polynomial-c@gentoo.org>
CommitDate: 2021-08-11 12:30:42 +0000

    sys-apps/util-linux: Revbump to add various upstream fixes
    
    * Erase names in agetty by pressing CTRL-C (#804972)
    * Fixed user mount of davfs2 filesystems (#805218)
    * Fixed lscpu segfault on riscv plattform with upstream patch (#802606)
    + Fixed potential buffer overflow in ipcutils (#806070) (CVE-2021-37600)
    
    Bug: https://bugs.gentoo.org/806070
    Closes: https://bugs.gentoo.org/804972
    Closes: https://bugs.gentoo.org/805218
    Closes: https://bugs.gentoo.org/802606
    Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>

 .../util-linux-2.37.1-agetty_ctrl-c_erase.patch    |  50 +++
 .../util-linux-2.37.1-ipcutils_calloc_check.patch  |  25 ++
 .../util-linux-2.37.1-libmount_setgroups_fix.patch |  38 +++
 ...l-linux-2.37.1-lscpu_NULL_dereference_fix.patch |  50 +++
 sys-apps/util-linux/util-linux-2.37.1-r1.ebuild    | 338 +++++++++++++++++++++
 5 files changed, 501 insertions(+)

Comment 3 John Helmert III archtester

2021-09-18 13:24:36 UTC

Please cleanup.