Bug 1084529 – VUL-0: CVE-2017-18222: kernel-source: In the Linux kernel before 4.12, Hisilicon Network Subsystem (HNS) doesnot consider the ETH_SS_PRIV_FLAGS case when retrieving sset_countdata, which allows local users to cause a denial of service (bu

Bug 1084529 - (CVE-2017-18222) VUL-0: CVE-2017-18222: kernel-source: In the Linux kernel before 4.12, Hisilicon Network Subsystem (HNS) doesnot consider the ETH_SS_PRIV_FLAGS case when retrieving sset_countdata, which allows local users to cause a denial of service (bu

(CVE-2017-18222)
Summary:	VUL-0: CVE-2017-18222: kernel-source: In the Linux kernel before 4.12, Hisili...

Status:	RESOLVED FIXED

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other Other

Priority:	P3 - Medium Severity: Normal
Target Milestone:	---
Assigned To:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/201458/
Whiteboard:	CVSSv3:SUSE:CVE-2017-18222:8.4:(AV:L/...
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Create test case

Clone This Bug

Reported:	2018-03-08 15:27 UTC by Marcus Meissner
Modified:	2020-10-29 10:59 UTC (History)
CC List:	6 users (show)

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

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Marcus Meissner 2018-03-08 15:27:43 UTC

CVE-2017-18222

In the Linux kernel before 4.12, Hisilicon Network Subsystem (HNS) does
not consider the ETH_SS_PRIV_FLAGS case when retrieving sset_count
data, which allows local users to cause a denial of service (buffer
overflow and memory corruption) or possibly have unspecified other
impact, as demonstrated by incompatibility between hns_get_sset_count
and ethtool_get_strings.


References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-18222
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18222

Comment 1 Marcus Meissner 2018-03-08 15:28:47 UTC

https://github.com/torvalds/linux/commit/412b65d15a7f8a93794653968308fc100f2aa87c

 net: hns: fix ethtool_get_strings overflow in hns driver

hns_get_sset_count() returns HNS_NET_STATS_CNT and the data space allocated
is not enough for ethtool_get_strings(), which will cause random memory
corruption.

When SLAB and DEBUG_SLAB are both enabled, memory corruptions like the
the following can be observed without this patch:
[   43.115200] Slab corruption (Not tainted): Acpi-ParseExt start=ffff801fb0b69030, len=80
[   43.115206] Redzone: 0x9f911029d006462/0x5f78745f31657070.
[   43.115208] Last user: [<5f7272655f746b70>](0x5f7272655f746b70)
[   43.115214] 010: 70 70 65 31 5f 74 78 5f 70 6b 74 00 6b 6b 6b 6b  ppe1_tx_pkt.kkkk
[   43.115217] 030: 70 70 65 31 5f 74 78 5f 70 6b 74 5f 6f 6b 00 6b  ppe1_tx_pkt_ok.k
[   43.115218] Next obj: start=ffff801fb0b69098, len=80
[   43.115220] Redzone: 0x706d655f6f666966/0x9f911029d74e35b.
[   43.115229] Last user: [<ffff0000084b11b0>](acpi_os_release_object+0x28/0x38)
[   43.115231] 000: 74 79 00 6b 6b 6b 6b 6b 70 70 65 31 5f 74 78 5f  ty.kkkkkppe1_tx_
[   43.115232] 010: 70 6b 74 5f 65 72 72 5f 63 73 75 6d 5f 66 61 69  pkt_err_csum_fai

Comment 2 Marcus Meissner 2018-03-08 15:31:37 UTC

Driver was added in 4.4.

is enabled for aarch64

Comment 6 Marcus Meissner 2018-08-29 10:02:52 UTC

patches.kernel.org/4.4.124-068-net-hns-fix-ethtool_get_strings-overflow-in-h.patch

in sle12 sp3.

Comment 7 Marcus Meissner 2018-08-29 10:03:18 UTC

aarch64 not supported in older products -> done