1176724 – (CVE-2020-0429) VUL-1: CVE-2020-0429: kernel-source: possible memory corruption in l2tp_session_delete and related functions of l2tp_core.c

Bug 1176724 (CVE-2020-0429) - VUL-1: CVE-2020-0429: kernel-source: possible memory corruption in l2tp_session_delete and related functions of l2tp_core.c

Summary: VUL-1: CVE-2020-0429: kernel-source: possible memory corruption in l2tp_sessi...

Status:	RESOLVED FIXED

Alias:	CVE-2020-0429

Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents (show other bugs)
Version:	unspecified
Hardware:	Other Other

Priority:	P4 - Low Severity: Minor
Target Milestone:	---
Assignee:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/267627/
Whiteboard:	CVSSv3.1:SUSE:CVE-2020-0429:7.0:(AV:L...
Keywords:

Depends on:
Blocks:	1176931
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Reported:	2020-09-18 14:47 UTC by Alexander Bergmann
Modified:	2024-07-04 09:14 UTC (History)
CC List:	6 users (show)

See Also:
Found By:	Security Response Team
Services Priority:
Business Priority:
Blocker:	---
Marketing QA Status:	---
IT Deployment:	---

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Description Alexander Bergmann 2020-09-18 14:47:20 UTC

CVE-2020-0429

In l2tp_session_delete and related functions of l2tp_core.c, there is possible
memory corruption due to a use after free. This could lead to local escalation
of privilege with System execution privileges needed. User interaction is not
needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
A-152735806

Android kernel commits:
v4.9:
https://android.googlesource.com/kernel/common/+/e8b9cf5574e8
https://android.googlesource.com/kernel/common/+/8aeff206767e
v4.4:
https://android.googlesource.com/kernel/common/+/d845bf594d68
https://android.googlesource.com/kernel/common/+/b2c1c59e89b5
https://android.googlesource.com/kernel/common/+/3cc61eae6d29
https://android.googlesource.com/kernel/common/+/e613c6208242
https://android.googlesource.com/kernel/common/+/bbece67424d9
https://android.googlesource.com/kernel/common/+/128db36faef7
https://android.googlesource.com/kernel/common/+/890a9c4b3fef

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-0429
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0429
https://source.android.com/security/bulletin/pixel/2020-09-01

Comment 1 Takashi Iwai 2020-09-22 11:41:46 UTC

The suggested fixes are from 4.14, and SLE15-SP1 already contain both of them via bsc#1076830.

Reassigned to Michal, who backported the fixes.

Comment 2 Marcus Meissner 2020-09-24 15:02:05 UTC

probably in all codestreams.

Also not clear what rights are needed are available to non-root users?

Comment 5 Michal Kubeček 2021-08-01 22:51:06 UTC

Collected and backported original mainline commits of those reported in the
initial description without one we already have and with few more which are
either follow-up fixes or related fixes of issues of similar or worse severity.

Submitted to cve/linux-4.4 and submitted also pull requests for SLE12-SP2-LTSS
and SLE12-SP3-LTSS with resolved conflicts and necessary refreshes.

The backported series:

4ac36a4adaf8  l2tp: Correctly return -EBADF from pppol2tp_getname.
54c151d9ed13  l2tp: Refactor the codes with existing macros instead of literal
              number
57377d635478  l2tp: ensure session can't get removed during
              pppol2tp_session_ioctl()
dbdbc73b4478  l2tp: fix duplicate session creation
5e6a9e5a3554  l2tp: hold session while sending creation notifications
2777e2ab5a9c  l2tp: take a reference on sessions used in genetlink handlers
9ee369a405c5  l2tp: initialise session's refcount before making it reachable
f3c66d4e144a  l2tp: prevent creation of sessions on terminated tunnels
cdd10c962749  l2tp: ensure sessions are freed after their PPPOL2TP socket
b228a9406640  l2tp: fix race between l2tp_session_delete() and
              l2tp_tunnel_closeall()
765924e362d1  l2tp: don't close sessions in l2tp_tunnel_destruct()
0d0d9a388a85  l2tp: Allow duplicate session creation with UDP

Comment 9 Swamp Workflow Management 2021-08-10 13:43:03 UTC

SUSE-SU-2021:2643-1: An update that solves 10 vulnerabilities, contains one feature and has 33 fixes is now available.

Category: security (important)
Bug References: 1065729,1085224,1094840,1113295,1153720,1170511,1176724,1176931,1176940,1179195,1181161,1183871,1184114,1184350,1184804,1185032,1185308,1185377,1185791,1185995,1186206,1186482,1186672,1187038,1187050,1187215,1187476,1187585,1187846,1188026,1188062,1188101,1188116,1188273,1188274,1188405,1188620,1188750,1188838,1188842,1188876,1188885,1188973
CVE References: CVE-2020-0429,CVE-2020-36385,CVE-2020-36386,CVE-2021-22543,CVE-2021-22555,CVE-2021-33909,CVE-2021-3609,CVE-2021-3612,CVE-2021-3659,CVE-2021-37576
JIRA References: SLE-10538
Sources used:
SUSE Linux Enterprise Real Time Extension 12-SP5 (src):    kernel-rt-4.12.14-10.54.1, kernel-rt_debug-4.12.14-10.54.1, kernel-source-rt-4.12.14-10.54.1, kernel-syms-rt-4.12.14-10.54.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 10 Swamp Workflow Management 2021-08-10 13:52:38 UTC

SUSE-SU-2021:2647-1: An update that solves 5 vulnerabilities and has 25 fixes is now available.

Category: security (important)
Bug References: 1065729,1085224,1094840,1113295,1176724,1176931,1176940,1179195,1181161,1183871,1184114,1184350,1184804,1185377,1186206,1186482,1186483,1186672,1187038,1187476,1187846,1188026,1188101,1188405,1188620,1188750,1188838,1188876,1188885,1188973
CVE References: CVE-2020-0429,CVE-2020-36386,CVE-2021-22543,CVE-2021-3659,CVE-2021-37576
JIRA References: 
Sources used:
SUSE Linux Enterprise Workstation Extension 12-SP5 (src):    kernel-default-4.12.14-122.83.1
SUSE Linux Enterprise Software Development Kit 12-SP5 (src):    kernel-docs-4.12.14-122.83.1, kernel-obs-build-4.12.14-122.83.1
SUSE Linux Enterprise Server 12-SP5 (src):    kernel-default-4.12.14-122.83.1, kernel-source-4.12.14-122.83.1, kernel-syms-4.12.14-122.83.1
SUSE Linux Enterprise Live Patching 12-SP5 (src):    kernel-default-4.12.14-122.83.1, kgraft-patch-SLE12-SP5_Update_22-1-8.3.1
SUSE Linux Enterprise High Availability 12-SP5 (src):    kernel-default-4.12.14-122.83.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 11 Swamp Workflow Management 2021-08-10 13:57:32 UTC

SUSE-SU-2021:2644-1: An update that solves 5 vulnerabilities and has 25 fixes is now available.

Category: security (important)
Bug References: 1065729,1085224,1094840,1113295,1176724,1176931,1176940,1179195,1181161,1183871,1184114,1184350,1184804,1185377,1186206,1186482,1186483,1186672,1187038,1187476,1187846,1188026,1188101,1188405,1188620,1188750,1188838,1188876,1188885,1188973
CVE References: CVE-2020-0429,CVE-2020-36386,CVE-2021-22543,CVE-2021-3659,CVE-2021-37576
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 12-SP5 (src):    kernel-azure-4.12.14-16.68.1, kernel-source-azure-4.12.14-16.68.1, kernel-syms-azure-4.12.14-16.68.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 25 Swamp Workflow Management 2021-12-02 11:20:49 UTC

openSUSE-SU-2021:3876-1: An update that solves 43 vulnerabilities, contains one feature and has 26 fixes is now available.

Category: security (important)
Bug References: 1100416,1108488,1129735,1129898,1133374,1136513,1171420,1176724,1177666,1181158,1184673,1184804,1185377,1185726,1185758,1185973,1186078,1186109,1186390,1186482,1186672,1188062,1188063,1188172,1188563,1188601,1188616,1188838,1188876,1188983,1188985,1189057,1189262,1189291,1189399,1189400,1189706,1189846,1189884,1190023,1190025,1190067,1190115,1190117,1190159,1190276,1190349,1190351,1190479,1190534,1190601,1190717,1191193,1191315,1191317,1191349,1191457,1191628,1191790,1191800,1191888,1191961,1192045,1192267,1192379,1192400,1192775,1192781,1192802
CVE References: CVE-2018-13405,CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-0429,CVE-2020-12770,CVE-2020-3702,CVE-2020-4788,CVE-2021-0941,CVE-2021-20322,CVE-2021-22543,CVE-2021-31916,CVE-2021-33033,CVE-2021-33909,CVE-2021-34556,CVE-2021-34981,CVE-2021-3542,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3656,CVE-2021-3659,CVE-2021-3679,CVE-2021-3715,CVE-2021-37159,CVE-2021-3732,CVE-2021-3744,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3759,CVE-2021-3760,CVE-2021-3764,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-40490,CVE-2021-41864,CVE-2021-42008,CVE-2021-42252,CVE-2021-42739
JIRA References: SLE-22573
Sources used:
openSUSE Leap 15.3 (src):    kernel-debug-4.12.14-197.102.2, kernel-default-4.12.14-197.102.2, kernel-kvmsmall-4.12.14-197.102.2, kernel-vanilla-4.12.14-197.102.2, kernel-zfcpdump-4.12.14-197.102.2

Comment 26 Swamp Workflow Management 2021-12-02 11:33:04 UTC

SUSE-SU-2021:3876-1: An update that solves 43 vulnerabilities, contains one feature and has 26 fixes is now available.

Category: security (important)
Bug References: 1100416,1108488,1129735,1129898,1133374,1136513,1171420,1176724,1177666,1181158,1184673,1184804,1185377,1185726,1185758,1185973,1186078,1186109,1186390,1186482,1186672,1188062,1188063,1188172,1188563,1188601,1188616,1188838,1188876,1188983,1188985,1189057,1189262,1189291,1189399,1189400,1189706,1189846,1189884,1190023,1190025,1190067,1190115,1190117,1190159,1190276,1190349,1190351,1190479,1190534,1190601,1190717,1191193,1191315,1191317,1191349,1191457,1191628,1191790,1191800,1191888,1191961,1192045,1192267,1192379,1192400,1192775,1192781,1192802
CVE References: CVE-2018-13405,CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-0429,CVE-2020-12770,CVE-2020-3702,CVE-2020-4788,CVE-2021-0941,CVE-2021-20322,CVE-2021-22543,CVE-2021-31916,CVE-2021-33033,CVE-2021-33909,CVE-2021-34556,CVE-2021-34981,CVE-2021-3542,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3656,CVE-2021-3659,CVE-2021-3679,CVE-2021-3715,CVE-2021-37159,CVE-2021-3732,CVE-2021-3744,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3759,CVE-2021-3760,CVE-2021-3764,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-40490,CVE-2021-41864,CVE-2021-42008,CVE-2021-42252,CVE-2021-42739
JIRA References: SLE-22573
Sources used:
SUSE Linux Enterprise Server for SAP 15-SP1 (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE Linux Enterprise Server 15-SP1-LTSS (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2, kernel-zfcpdump-4.12.14-197.102.2
SUSE Linux Enterprise Server 15-SP1-BCL (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE Linux Enterprise Module for Live Patching 15-SP1 (src):    kernel-default-4.12.14-197.102.2, kernel-livepatch-SLE15-SP1_Update_27-1-3.3.1
SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE Linux Enterprise High Performance Computing 15-SP1-ESPOS (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE Linux Enterprise High Availability 15-SP1 (src):    kernel-default-4.12.14-197.102.2
SUSE Enterprise Storage 6 (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2
SUSE CaaS Platform 4.0 (src):    kernel-default-4.12.14-197.102.2, kernel-docs-4.12.14-197.102.2, kernel-obs-build-4.12.14-197.102.1, kernel-source-4.12.14-197.102.2, kernel-syms-4.12.14-197.102.2

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 27 Swamp Workflow Management 2021-12-06 14:35:55 UTC

SUSE-SU-2021:3929-1: An update that solves 36 vulnerabilities and has 7 fixes is now available.

Category: security (important)
Bug References: 1068032,1087082,1098425,1100416,1119934,1129735,1171217,1171420,1173346,1176724,1183089,1184673,1186109,1186390,1188172,1188325,1188563,1188601,1188838,1188876,1188983,1188985,1189057,1189262,1189291,1189399,1189706,1190023,1190025,1190067,1190117,1190159,1190276,1190349,1190351,1190601,1191193,1191315,1191790,1191958,1191961,1192781,802154
CVE References: CVE-2017-5753,CVE-2018-13405,CVE-2018-16882,CVE-2020-0429,CVE-2020-12655,CVE-2020-14305,CVE-2020-3702,CVE-2021-20265,CVE-2021-20322,CVE-2021-31916,CVE-2021-33033,CVE-2021-34556,CVE-2021-34981,CVE-2021-3542,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3659,CVE-2021-3679,CVE-2021-3715,CVE-2021-37159,CVE-2021-3732,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3760,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-3896,CVE-2021-40490,CVE-2021-42008,CVE-2021-42739,CVE-2021-43389
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 12-SP2-BCL (src):    kernel-default-4.4.121-92.161.1, kernel-source-4.4.121-92.161.1, kernel-syms-4.4.121-92.161.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 28 Swamp Workflow Management 2021-12-06 18:12:22 UTC

SUSE-SU-2021:3935-1: An update that solves 38 vulnerabilities and has 18 fixes is now available.

Category: security (important)
Bug References: 1073928,1098425,1100416,1119934,1129735,1171217,1171420,1173346,1176724,1177666,1181158,1181854,1181855,1183089,1184673,1185726,1185727,1185758,1185973,1186109,1186390,1188172,1188563,1188601,1188838,1188876,1188983,1188985,1189057,1189262,1189278,1189291,1189399,1189420,1189706,1190022,1190023,1190025,1190067,1190117,1190159,1190194,1190349,1190351,1190601,1190717,1191193,1191315,1191790,1191801,1191958,1191961,1192267,1192400,1192775,1192781
CVE References: CVE-2017-17862,CVE-2017-17864,CVE-2018-13405,CVE-2018-16882,CVE-2020-0429,CVE-2020-12655,CVE-2020-14305,CVE-2020-3702,CVE-2020-4788,CVE-2021-20265,CVE-2021-20322,CVE-2021-31916,CVE-2021-33033,CVE-2021-34556,CVE-2021-34981,CVE-2021-3542,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3659,CVE-2021-3679,CVE-2021-3715,CVE-2021-37159,CVE-2021-3732,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3760,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-3896,CVE-2021-40490,CVE-2021-42008,CVE-2021-42739,CVE-2021-43389
JIRA References: 
Sources used:
SUSE OpenStack Cloud Crowbar 8 (src):    kernel-default-4.4.180-94.150.1, kernel-source-4.4.180-94.150.1, kernel-syms-4.4.180-94.150.1, kgraft-patch-SLE12-SP3_Update_41-1-4.3.1
SUSE OpenStack Cloud 8 (src):    kernel-default-4.4.180-94.150.1, kernel-source-4.4.180-94.150.1, kernel-syms-4.4.180-94.150.1, kgraft-patch-SLE12-SP3_Update_41-1-4.3.1
SUSE Linux Enterprise Server for SAP 12-SP3 (src):    kernel-default-4.4.180-94.150.1, kernel-source-4.4.180-94.150.1, kernel-syms-4.4.180-94.150.1, kgraft-patch-SLE12-SP3_Update_41-1-4.3.1
SUSE Linux Enterprise Server 12-SP3-LTSS (src):    kernel-default-4.4.180-94.150.1, kernel-source-4.4.180-94.150.1, kernel-syms-4.4.180-94.150.1, kgraft-patch-SLE12-SP3_Update_41-1-4.3.1
SUSE Linux Enterprise Server 12-SP3-BCL (src):    kernel-default-4.4.180-94.150.1, kernel-source-4.4.180-94.150.1, kernel-syms-4.4.180-94.150.1
SUSE Linux Enterprise High Availability 12-SP3 (src):    kernel-default-4.4.180-94.150.1
HPE Helion Openstack 8 (src):    kernel-default-4.4.180-94.150.1, kernel-source-4.4.180-94.150.1, kernel-syms-4.4.180-94.150.1, kgraft-patch-SLE12-SP3_Update_41-1-4.3.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 29 Marcus Meissner 2021-12-07 13:04:19 UTC

done

Comment 30 Swamp Workflow Management 2021-12-08 14:18:24 UTC

SUSE-SU-2021:3972-1: An update that solves 40 vulnerabilities and has 47 fixes is now available.

Category: security (important)
Bug References: 1087082,1100416,1108488,1129735,1129898,1133374,1153720,1171420,1176724,1176931,1180624,1181854,1181855,1183050,1183861,1184673,1184804,1185377,1185677,1185726,1185727,1185758,1185973,1186063,1186482,1186483,1186672,1188026,1188172,1188563,1188601,1188613,1188838,1188842,1188876,1188983,1188985,1189057,1189262,1189278,1189291,1189399,1189400,1189418,1189420,1189706,1189846,1189884,1190023,1190025,1190067,1190115,1190117,1190118,1190159,1190276,1190349,1190350,1190351,1190432,1190479,1190534,1190601,1190717,1191193,1191315,1191317,1191318,1191529,1191530,1191628,1191660,1191790,1191801,1191813,1191961,1192036,1192045,1192048,1192267,1192379,1192400,1192444,1192549,1192775,1192781,1192802
CVE References: CVE-2018-13405,CVE-2018-9517,CVE-2019-3874,CVE-2019-3900,CVE-2020-0429,CVE-2020-12770,CVE-2020-3702,CVE-2021-0941,CVE-2021-20322,CVE-2021-22543,CVE-2021-31916,CVE-2021-34556,CVE-2021-34981,CVE-2021-3542,CVE-2021-35477,CVE-2021-3640,CVE-2021-3653,CVE-2021-3655,CVE-2021-3656,CVE-2021-3659,CVE-2021-3679,CVE-2021-3715,CVE-2021-37159,CVE-2021-3732,CVE-2021-3744,CVE-2021-3752,CVE-2021-3753,CVE-2021-37576,CVE-2021-3759,CVE-2021-3760,CVE-2021-3764,CVE-2021-3772,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-40490,CVE-2021-41864,CVE-2021-42008,CVE-2021-42252,CVE-2021-42739
JIRA References: 
Sources used:
SUSE OpenStack Cloud Crowbar 9 (src):    kernel-default-4.12.14-95.83.2, kernel-source-4.12.14-95.83.2, kernel-syms-4.12.14-95.83.2
SUSE OpenStack Cloud 9 (src):    kernel-default-4.12.14-95.83.2, kernel-source-4.12.14-95.83.2, kernel-syms-4.12.14-95.83.2
SUSE Linux Enterprise Server for SAP 12-SP4 (src):    kernel-default-4.12.14-95.83.2, kernel-source-4.12.14-95.83.2, kernel-syms-4.12.14-95.83.2
SUSE Linux Enterprise Server 12-SP4-LTSS (src):    kernel-default-4.12.14-95.83.2, kernel-source-4.12.14-95.83.2, kernel-syms-4.12.14-95.83.2
SUSE Linux Enterprise Live Patching 12-SP4 (src):    kernel-default-4.12.14-95.83.2, kgraft-patch-SLE12-SP4_Update_23-1-6.3.1
SUSE Linux Enterprise High Availability 12-SP4 (src):    kernel-default-4.12.14-95.83.2

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.