Bug 1220660 (CVE-2021-47005) - VUL-0: CVE-2021-47005: kernel: PCI: endpoint: NULL pointer dereference in pci_epf_test_alloc_space()
Summary: VUL-0: CVE-2021-47005: kernel: PCI: endpoint: NULL pointer dereference in pci...
Status: IN_PROGRESS
Alias: CVE-2021-47005
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/395454/
Whiteboard: CVSSv3.1:SUSE:CVE-2021-47005:4.4:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-02-29 10:49 UTC by SMASH SMASH
Modified: 2024-03-22 12:32 UTC (History)
2 users (show)

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

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Description SMASH SMASH 2024-02-29 10:49:46 UTC 
In the Linux kernel, the following vulnerability has been resolved:

PCI: endpoint: Fix NULL pointer dereference for ->get_features()

get_features ops of pci_epc_ops may return NULL, causing NULL pointer
dereference in pci_epf_test_alloc_space function. Let us add a check for
pci_epc_feature pointer in pci_epf_test_bind before we access it to avoid
any such NULL pointer dereference and return -ENOTSUPP in case
pci_epc_feature is not found.

When the patch is not applied and EPC features is not implemented in the
platform driver, we see the following dump due to kernel NULL pointer
dereference.

Call trace:
 pci_epf_test_bind+0xf4/0x388
 pci_epf_bind+0x3c/0x80
 pci_epc_epf_link+0xa8/0xcc
 configfs_symlink+0x1a4/0x48c
 vfs_symlink+0x104/0x184
 do_symlinkat+0x80/0xd4
 __arm64_sys_symlinkat+0x1c/0x24
 el0_svc_common.constprop.3+0xb8/0x170
 el0_svc_handler+0x70/0x88
 el0_svc+0x8/0x640
Code: d2800581 b9403ab9 f9404ebb 8b394f60 (f9400400)
---[ end trace a438e3c5a24f9df0 ]---

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47005
https://git.kernel.org/stable/c/0169d4f0bee44fdfef908c13ed21fcb326c38695
https://git.kernel.org/stable/c/6613bc2301ba291a1c5a90e1dc24cf3edf223c03
https://git.kernel.org/stable/c/679ebad058b8168f10e63876d63b0877fd2fe784
https://git.kernel.org/stable/c/bbed83d7060e07a5d309104d25a00f0a24441428
https://www.cve.org/CVERecord?id=CVE-2021-47005
https://bugzilla.redhat.com/show_bug.cgi?id=2266861
Comment 1 Carlos López 2024-02-29 10:50:17 UTC 
Affects cve/linux-5.3. Already fixed in cve/linux-5.14 and newer.
Comment 3 Jiri Slaby 2024-03-04 11:12:43 UTC 
FTR, the
commit 6613bc2301ba291a1c5a90e1dc24cf3edf223c03
Author: Shradha Todi <shradha.t@samsung.com>
Date:   Wed Mar 24 15:46:09 2021 +0530

    PCI: endpoint: Fix NULL pointer dereference for ->get_features()

is present in v5.13-rc1.
Comment 4 Jiri Slaby 2024-03-05 07:46:54 UTC 
FTR
Fixes: 2c04c5b8eef79 ("PCI: pci-epf-test: Use pci_epc_get_features() to get EPC features")
in v5.1-rc1

(In reply to Carlos López from comment #1)
> Affects cve/linux-5.3.

Backported.
Comment 11 Maintenance Automation 2024-03-13 08:30:26 UTC 
SUSE-SU-2024:0857-1: An update that solves 67 vulnerabilities and has four security fixes can now be installed.

Category: security (important)
Bug References: 1200599, 1207653, 1212514, 1213456, 1216223, 1218195, 1218689, 1218915, 1219127, 1219128, 1219146, 1219295, 1219653, 1219827, 1219835, 1219915, 1220009, 1220140, 1220187, 1220238, 1220240, 1220241, 1220243, 1220250, 1220253, 1220255, 1220328, 1220330, 1220344, 1220398, 1220409, 1220416, 1220418, 1220421, 1220436, 1220444, 1220459, 1220469, 1220482, 1220526, 1220538, 1220570, 1220572, 1220599, 1220627, 1220641, 1220649, 1220660, 1220689, 1220700, 1220735, 1220736, 1220737, 1220742, 1220745, 1220767, 1220796, 1220825, 1220826, 1220831, 1220845, 1220860, 1220863, 1220870, 1220917, 1220918, 1220930, 1220931, 1220932, 1221039, 1221040
CVE References: CVE-2019-25162, CVE-2020-36777, CVE-2020-36784, CVE-2021-46904, CVE-2021-46905, CVE-2021-46906, CVE-2021-46915, CVE-2021-46924, CVE-2021-46929, CVE-2021-46932, CVE-2021-46934, CVE-2021-46953, CVE-2021-46964, CVE-2021-46966, CVE-2021-46968, CVE-2021-46974, CVE-2021-46989, CVE-2021-47005, CVE-2021-47012, CVE-2021-47013, CVE-2021-47054, CVE-2021-47060, CVE-2021-47061, CVE-2021-47069, CVE-2021-47076, CVE-2021-47078, CVE-2021-47083, CVE-2022-20154, CVE-2022-48627, CVE-2023-28746, CVE-2023-35827, CVE-2023-46343, CVE-2023-51042, CVE-2023-52340, CVE-2023-52429, CVE-2023-52439, CVE-2023-52443, CVE-2023-52445, CVE-2023-52448, CVE-2023-52449, CVE-2023-52451, CVE-2023-52463, CVE-2023-52475, CVE-2023-52478, CVE-2023-52482, CVE-2023-52502, CVE-2023-52530, CVE-2023-52531, CVE-2023-52532, CVE-2023-52569, CVE-2023-52574, CVE-2023-52597, CVE-2023-52605, CVE-2023-6817, CVE-2024-0340, CVE-2024-0607, CVE-2024-1151, CVE-2024-23849, CVE-2024-23851, CVE-2024-26585, CVE-2024-26586, CVE-2024-26589, CVE-2024-26593, CVE-2024-26595, CVE-2024-26602, CVE-2024-26607, CVE-2024-26622
Sources used:
openSUSE Leap 15.3 (src): kernel-obs-qa-5.3.18-150300.59.153.1, kernel-livepatch-SLE15-SP3_Update_42-1-150300.7.3.2, kernel-syms-5.3.18-150300.59.153.1, kernel-default-base-5.3.18-150300.59.153.2.150300.18.90.2, kernel-source-5.3.18-150300.59.153.2, kernel-obs-build-5.3.18-150300.59.153.2
SUSE Linux Enterprise Live Patching 15-SP3 (src): kernel-livepatch-SLE15-SP3_Update_42-1-150300.7.3.2
SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 (src): kernel-default-base-5.3.18-150300.59.153.2.150300.18.90.2, kernel-source-5.3.18-150300.59.153.2, kernel-syms-5.3.18-150300.59.153.1, kernel-obs-build-5.3.18-150300.59.153.2
SUSE Linux Enterprise Server 15 SP3 LTSS 15-SP3 (src): kernel-default-base-5.3.18-150300.59.153.2.150300.18.90.2, kernel-source-5.3.18-150300.59.153.2, kernel-syms-5.3.18-150300.59.153.1, kernel-obs-build-5.3.18-150300.59.153.2
SUSE Linux Enterprise Server for SAP Applications 15 SP3 (src): kernel-default-base-5.3.18-150300.59.153.2.150300.18.90.2, kernel-source-5.3.18-150300.59.153.2, kernel-syms-5.3.18-150300.59.153.1, kernel-obs-build-5.3.18-150300.59.153.2
SUSE Enterprise Storage 7.1 (src): kernel-default-base-5.3.18-150300.59.153.2.150300.18.90.2, kernel-source-5.3.18-150300.59.153.2, kernel-syms-5.3.18-150300.59.153.1, kernel-obs-build-5.3.18-150300.59.153.2
SUSE Linux Enterprise Micro 5.1 (src): kernel-default-base-5.3.18-150300.59.153.2.150300.18.90.2
SUSE Linux Enterprise Micro 5.2 (src): kernel-default-base-5.3.18-150300.59.153.2.150300.18.90.2
SUSE Linux Enterprise Micro for Rancher 5.2 (src): kernel-default-base-5.3.18-150300.59.153.2.150300.18.90.2

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 12 Maintenance Automation 2024-03-13 08:30:45 UTC 
SUSE-SU-2024:0856-1: An update that solves 67 vulnerabilities and has seven security fixes can now be installed.

Category: security (important)
Bug References: 1155518, 1184436, 1185988, 1186286, 1200599, 1207653, 1212514, 1213456, 1216223, 1218195, 1218689, 1218915, 1219127, 1219128, 1219146, 1219295, 1219653, 1219827, 1219835, 1219915, 1220009, 1220140, 1220187, 1220238, 1220240, 1220241, 1220243, 1220250, 1220253, 1220255, 1220328, 1220330, 1220344, 1220398, 1220409, 1220416, 1220418, 1220421, 1220436, 1220444, 1220459, 1220469, 1220482, 1220526, 1220538, 1220570, 1220572, 1220599, 1220627, 1220641, 1220649, 1220660, 1220700, 1220735, 1220736, 1220737, 1220742, 1220745, 1220767, 1220796, 1220825, 1220826, 1220831, 1220845, 1220860, 1220863, 1220870, 1220917, 1220918, 1220930, 1220931, 1220932, 1221039, 1221040
CVE References: CVE-2019-25162, CVE-2020-36777, CVE-2020-36784, CVE-2021-46904, CVE-2021-46905, CVE-2021-46906, CVE-2021-46915, CVE-2021-46924, CVE-2021-46929, CVE-2021-46932, CVE-2021-46934, CVE-2021-46953, CVE-2021-46964, CVE-2021-46966, CVE-2021-46968, CVE-2021-46974, CVE-2021-46989, CVE-2021-47005, CVE-2021-47012, CVE-2021-47013, CVE-2021-47054, CVE-2021-47060, CVE-2021-47061, CVE-2021-47069, CVE-2021-47076, CVE-2021-47078, CVE-2021-47083, CVE-2022-20154, CVE-2022-48627, CVE-2023-28746, CVE-2023-35827, CVE-2023-46343, CVE-2023-51042, CVE-2023-52340, CVE-2023-52429, CVE-2023-52439, CVE-2023-52443, CVE-2023-52445, CVE-2023-52448, CVE-2023-52449, CVE-2023-52451, CVE-2023-52463, CVE-2023-52475, CVE-2023-52478, CVE-2023-52482, CVE-2023-52502, CVE-2023-52530, CVE-2023-52531, CVE-2023-52532, CVE-2023-52569, CVE-2023-52574, CVE-2023-52597, CVE-2023-52605, CVE-2023-6817, CVE-2024-0340, CVE-2024-0607, CVE-2024-1151, CVE-2024-23849, CVE-2024-23851, CVE-2024-26585, CVE-2024-26586, CVE-2024-26589, CVE-2024-26593, CVE-2024-26595, CVE-2024-26602, CVE-2024-26607, CVE-2024-26622
Sources used:
SUSE Linux Enterprise Micro 5.1 (src): kernel-source-rt-5.3.18-150300.161.1
SUSE Linux Enterprise Micro 5.2 (src): kernel-source-rt-5.3.18-150300.161.1
SUSE Linux Enterprise Micro for Rancher 5.2 (src): kernel-source-rt-5.3.18-150300.161.1

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 15 Maintenance Automation 2024-03-22 12:32:10 UTC 
SUSE-SU-2024:0926-1: An update that solves 65 vulnerabilities and has six security fixes can now be installed.

Category: security (important)
Bug References: 1155518, 1184436, 1185988, 1186286, 1200599, 1212514, 1213456, 1218689, 1218915, 1219127, 1219128, 1219146, 1219295, 1219653, 1219827, 1219835, 1220009, 1220140, 1220187, 1220238, 1220240, 1220241, 1220243, 1220250, 1220253, 1220255, 1220328, 1220330, 1220344, 1220398, 1220409, 1220416, 1220418, 1220421, 1220436, 1220444, 1220459, 1220469, 1220482, 1220526, 1220538, 1220570, 1220572, 1220599, 1220627, 1220641, 1220649, 1220660, 1220700, 1220735, 1220736, 1220737, 1220742, 1220745, 1220767, 1220796, 1220825, 1220826, 1220831, 1220845, 1220860, 1220863, 1220870, 1220917, 1220918, 1220930, 1220931, 1220932, 1221039, 1221040, 1221287
CVE References: CVE-2019-25162, CVE-2020-36777, CVE-2020-36784, CVE-2021-46904, CVE-2021-46905, CVE-2021-46906, CVE-2021-46915, CVE-2021-46924, CVE-2021-46929, CVE-2021-46932, CVE-2021-46934, CVE-2021-46953, CVE-2021-46964, CVE-2021-46966, CVE-2021-46974, CVE-2021-46989, CVE-2021-47005, CVE-2021-47012, CVE-2021-47013, CVE-2021-47054, CVE-2021-47060, CVE-2021-47061, CVE-2021-47069, CVE-2021-47076, CVE-2021-47078, CVE-2021-47083, CVE-2022-20154, CVE-2022-48627, CVE-2023-28746, CVE-2023-35827, CVE-2023-46343, CVE-2023-51042, CVE-2023-52340, CVE-2023-52429, CVE-2023-52439, CVE-2023-52443, CVE-2023-52445, CVE-2023-52448, CVE-2023-52449, CVE-2023-52451, CVE-2023-52463, CVE-2023-52475, CVE-2023-52478, CVE-2023-52482, CVE-2023-52502, CVE-2023-52530, CVE-2023-52531, CVE-2023-52532, CVE-2023-52569, CVE-2023-52574, CVE-2023-52597, CVE-2023-52605, CVE-2024-0340, CVE-2024-0607, CVE-2024-1151, CVE-2024-23849, CVE-2024-23851, CVE-2024-26585, CVE-2024-26586, CVE-2024-26589, CVE-2024-26593, CVE-2024-26595, CVE-2024-26602, CVE-2024-26607, CVE-2024-26622
Maintenance Incident: [SUSE:Maintenance:32904](https://smelt.suse.de/incident/32904/)
Sources used:
SUSE Linux Enterprise Live Patching 15-SP2 (src):
 kernel-livepatch-SLE15-SP2_Update_46-1-150200.5.3.2
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS 15-SP2 (src):
 kernel-obs-build-5.3.18-150200.24.183.1, kernel-syms-5.3.18-150200.24.183.1, kernel-source-5.3.18-150200.24.183.1, kernel-default-base-5.3.18-150200.24.183.1.150200.9.93.2
SUSE Linux Enterprise Server 15 SP2 LTSS 15-SP2 (src):
 kernel-obs-build-5.3.18-150200.24.183.1, kernel-syms-5.3.18-150200.24.183.1, kernel-source-5.3.18-150200.24.183.1, kernel-default-base-5.3.18-150200.24.183.1.150200.9.93.2
SUSE Linux Enterprise Server for SAP Applications 15 SP2 (src):
 kernel-obs-build-5.3.18-150200.24.183.1, kernel-syms-5.3.18-150200.24.183.1, kernel-source-5.3.18-150200.24.183.1, kernel-default-base-5.3.18-150200.24.183.1.150200.9.93.2

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.