CVE-2016-9576 json
The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, whic…
published 2016-12-28 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10382
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device.
Patch / fix
- linux linux_kernel 4.4.38, 4.8.14
- linux Debian 14, Debian 13, Debian 12 4.8.15-1
debian advisories DEBIAN-CVE-2016-9576
- linux Ubuntu 16.04 LTS 4.4.0-62.83
- linux-aws Ubuntu 16.04 LTS 4.4.0-1003.12
- linux-hwe Ubuntu 16.04 LTS 4.8.0-39.42~16.04.1
- linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1042.49
- linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-62.83~14.04.1
- linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1046.50
ubuntu advisories UBUNTU-CVE-2016-9576
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel RHEL 6 2.6.32-696.el6
- perf RHEL 6 2.6.32-696.el6
- python-perf RHEL 6 2.6.32-696.el6
- kernel-kdump RHEL 6 2.6.32-696.el6
- kernel-firmware RHEL 6 2.6.32-696.el6
- kernel-bootwrapper RHEL 6 2.6.32-696.el6
- kernel-abi-whitelists RHEL 6 2.6.32-696.el6
- kernel-debuginfo-common-i686 RHEL 6 2.6.32-696.el6
red hat advisories RHSA-2017:0817RHSA-2017:2669RHSA-2017:2077RHSA-2017:1842
- kernel-rt SLE Real Time 11 SP4 3.0.101.rt130-68.1
- kernel-syms-rt SLE Real Time 11 SP4 3.0.101.rt130-68.1
- kernel-rt_trace SLE Real Time 11 SP4 3.0.101.rt130-68.1
- kernel-source-rt SLE Real Time 11 SP4 3.0.101.rt130-68.1
- kernel-rt SLE Real Time 12 SP1 3.12.69-60.30.1
- kernel-compute SLE Real Time 12 SP1 3.12.69-60.30.1
- kernel-syms-rt SLE Real Time 12 SP1 3.12.69-60.30.1
- kernel-rt_debug SLE Real Time 12 SP1 3.12.69-60.30.1
suse advisories SUSE-SU-2017:1102-1SUSE-SU-2017:0407-1SUSE-SU-2017:0294-1SUSE-SU-2017:0293-1SUSE-SU-2017:0278-1SUSE-SU-2017:0267-1
- kernel-source openSUSE Tumbleweed 4.8.13-1.1
opensuse advisories openSUSE-SU-2024:10128-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2016-9576 updated cvss 7.0
kernel: Use after free in SCSI generic device interface
-
Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-693.el7, kernel 3.10.0-693.el7, python-perf 3.10.0-693.el7, kernel-tools 3.10.0-693.el7, kernel-tools-libs 3.10.0-693.el7, kernel-abi-whitelists 3.10.0-693.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-693.el7, kernel 3.10.0-693.el7, python-perf 3.10.0-693.el7, kernel-tools 3.10.0-693.el7, kernel-tools-libs 3.10.0-693.el7, kernel-abi-whitelists 3.10.0-693.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.el7fixed: vendor fix RHSA-2017:1842
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Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-696.el6, kernel 2.6.32-696.el6, kernel-firmware 2.6.32-696.el6, kernel-abi-whitelists 2.6.32-696.el6, kernel-debuginfo-common-i686 2.6.32-696.el6, kernel-debuginfo-common-x86_64 2.6.32-696.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-696.el6, kernel-debuginfo-common-i686 2.6.32-696.el6, kernel-debuginfo-common-x86_64 2.6.32-696.el6fixed: vendor fix RHSA-2017:0817
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Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-693.rt56.617.el7, kernel-rt-trace 3.10.0-693.rt56.617.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.rt56.617.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-693.rt56.617.el7, kernel-rt-kvm 3.10.0-693.rt56.617.el7, kernel-rt-trace 3.10.0-693.rt56.617.el7, kernel-rt-debug-kvm 3.10.0-693.rt56.617.el7, kernel-rt-trace-kvm 3.10.0-693.rt56.617.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.rt56.617.el7fixed: vendor fix RHSA-2017:2077
-
Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-696.el6, kernel 2.6.32-696.el6, kernel-firmware 2.6.32-696.el6, kernel-abi-whitelists 2.6.32-696.el6, kernel-debuginfo-common-i686 2.6.32-696.el6, kernel-debuginfo-common-x86_64 2.6.32-696.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-696.el6, kernel-debuginfo-common-x86_64 2.6.32-696.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-696.el6, kernel 2.6.32-696.el6, kernel-kdump 2.6.32-696.el6, kernel-firmware 2.6.32-696.el6, kernel-bootwrapper 2.6.32-696.el6, kernel-abi-whitelists 2.6.32-696.el6, +4 morefixed: vendor fix RHSA-2017:0817
-
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-693.el7, kernel 3.10.0-693.el7, python-perf 3.10.0-693.el7, kernel-kdump 3.10.0-693.el7, kernel-tools 3.10.0-693.el7, kernel-tools-libs 3.10.0-693.el7, +6 morefixed: vendor fix RHSA-2017:1842
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Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-696.el6, kernel-debuginfo-common-i686 2.6.32-696.el6, kernel-debuginfo-common-ppc64 2.6.32-696.el6, kernel-debuginfo-common-s390x 2.6.32-696.el6, kernel-debuginfo-common-x86_64 2.6.32-696.el6fixed: vendor fix RHSA-2017:0817
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Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-693.el7, kernel-debuginfo-common-x86_64 3.10.0-693.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.el7fixed: vendor fix RHSA-2017:1842
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Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-696.el6, kernel 2.6.32-696.el6, kernel-firmware 2.6.32-696.el6, kernel-abi-whitelists 2.6.32-696.el6, kernel-debuginfo-common-i686 2.6.32-696.el6, kernel-debuginfo-common-x86_64 2.6.32-696.el6fixed: vendor fix RHSA-2017:0817
show 5 moreshow fewer
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Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-693.el7, kernel 3.10.0-693.el7, python-perf 3.10.0-693.el7, kernel-tools 3.10.0-693.el7, kernel-tools-libs 3.10.0-693.el7, kernel-abi-whitelists 3.10.0-693.el7, +1 morefixed: vendor fix RHSA-2017:1842
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Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-696.el6, kernel-debuginfo-common-i686 2.6.32-696.el6, kernel-debuginfo-common-x86_64 2.6.32-696.el6fixed: vendor fix RHSA-2017:0817
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Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.el7fixed: vendor fix RHSA-2017:1842
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Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.2.1.rt56.585.el6rt, kernel-rt-trace 3.10.0-693.2.1.rt56.585.el6rt, kernel-rt-vanilla 3.10.0-693.2.1.rt56.585.el6rt, kernel-rt-firmware 3.10.0-693.2.1.rt56.585.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.2.1.rt56.585.el6rtfixed: vendor fix RHSA-2017:2669
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Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux Client (v. 7) kernel-headers 3.10.0-693.el7 Red Hat Enterprise Linux ComputeNode (v. 7) kernel-headers 3.10.0-693.el7 Red Hat Enterprise Linux Server (v. 7) kernel-headers 3.10.0-693.el7 Red Hat Enterprise Linux Workstation (v. 7) kernel-headers 3.10.0-693.el7not affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-416 Use After Free
- Technology feeds
References
-
git.kernel.org
/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a0ac402cfcdc904f9772e1762b3fda112dcc56a0
patch, vendor-advisory
-
github.com
/torvalds/linux/commit/a0ac402cfcdc904f9772e1762b3fda112dcc56a0
patch, vendor-advisory
-
openwall.com
/lists/oss-security/2016/12/08/19
mailing-list, patch, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00057.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00088.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00040.html
vendor-advisory, mailing-list, third-party-advisory
-
access.redhat.com
/errata/RHSA-2017:2669
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00072.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00041.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00062.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00075.html
vendor-advisory, mailing-list, third-party-advisory
-
rhn.redhat.com
/errata/RHSA-2017-0817.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00081.html
vendor-advisory, mailing-list, third-party-advisory
-
access.redhat.com
/errata/RHSA-2017:2077
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2017:1842
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-12/msg00091.html
vendor-advisory, mailing-list, third-party-advisory
-
kernel.org
/pub/linux/kernel/v4.x/ChangeLog-4.8.14
release-notes, vendor-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=1403145
issue-tracking, third-party-advisory
-
securityfocus.com
/bid/94821
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2016-9576
- NVD CVE-2016-9576
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.