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Fencer Intel
high 7.8

CVE-2016-7910 json

Use-after-free vulnerability in the disk_seqf_stop function in block/genhd.c in the Linux kernel before 4.7.1 allows local users to gain pr…

published 2016-11-16 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-8759

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

Use-after-free vulnerability in the disk_seqf_stop function in block/genhd.c in the Linux kernel before 4.7.1 allows local users to gain privileges by leveraging the execution of a certain stop operation even if the corresponding start operation had failed.

Patch / fix

  • linux linux_kernel 3.2.84, 3.10.103, 3.12.63, 3.14.76, 3.16.39, 3.18.40, 4.1.31, 4.4.18, 4.6.7, 4.7.1
  • linux Debian 14, Debian 13, Debian 12 4.7.2-1

debian advisories DEBIAN-CVE-2016-7910

  • linux Ubuntu 14.04 LTS 3.13.0-109.156
  • linux Ubuntu 16.04 LTS 4.4.0-38.57
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1023.29
  • linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-38.57~14.04.1
  • linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1026.29

ubuntu advisories UBUNTU-CVE-2016-7910

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 7 3.10.0-514.21.1.el7
  • perf RHEL 7 3.10.0-514.21.1.el7
  • python-perf RHEL 7 3.10.0-514.21.1.el7
  • kernel-kdump RHEL 7 3.10.0-514.21.1.el7
  • kernel-tools RHEL 7 3.10.0-514.21.1.el7
  • kernel-tools-libs RHEL 7 3.10.0-514.21.1.el7
  • kernel-bootwrapper RHEL 7 3.10.0-514.21.1.el7
  • kernel-abi-whitelists RHEL 7 3.10.0-514.21.1.el7

red hat advisories RHSA-2017:1308RHSA-2017:1297RHSA-2017:1298RHSA-2017:0892

  • 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-ec2 SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.96.1
  • kernel-pae SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 3.0.101-0.47.96.1
  • kernel-xen SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.96.1
  • kernel-syms SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.96.1

suse advisories SUSE-SU-2017:1102-1SUSE-SU-2017:0494-1SUSE-SU-2017:0471-1SUSE-SU-2017:0464-1SUSE-SU-2017:0437-1SUSE-SU-2017:0407-1

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-2016-7910 updated cvss 7.0

kernel: Use after free in seq file

  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-514.21.1.el7, kernel 3.10.0-514.21.1.el7, python-perf 3.10.0-514.21.1.el7, kernel-tools 3.10.0-514.21.1.el7, kernel-tools-libs 3.10.0-514.21.1.el7, kernel-abi-whitelists 3.10.0-514.21.1.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.21.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-514.21.1.el7, kernel 3.10.0-514.21.1.el7, python-perf 3.10.0-514.21.1.el7, kernel-tools 3.10.0-514.21.1.el7, kernel-tools-libs 3.10.0-514.21.1.el7, kernel-abi-whitelists 3.10.0-514.21.1.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.21.1.el7
    fixed: vendor fix RHSA-2017:1308
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-696.1.1.el6, kernel 2.6.32-696.1.1.el6, kernel-firmware 2.6.32-696.1.1.el6, kernel-abi-whitelists 2.6.32-696.1.1.el6, kernel-debuginfo-common-i686 2.6.32-696.1.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.1.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-696.1.1.el6, kernel-debuginfo-common-i686 2.6.32-696.1.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.1.1.el6
    fixed: vendor fix RHSA-2017:0892
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-514.21.1.rt56.438.el7, kernel-rt-kvm 3.10.0-514.21.1.rt56.438.el7, kernel-rt-trace 3.10.0-514.21.1.rt56.438.el7, kernel-rt-debug-kvm 3.10.0-514.21.1.rt56.438.el7, kernel-rt-trace-kvm 3.10.0-514.21.1.rt56.438.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-514.21.1.rt56.438.el7
    fixed: vendor fix RHSA-2017:1298
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-696.1.1.el6, kernel 2.6.32-696.1.1.el6, kernel-firmware 2.6.32-696.1.1.el6, kernel-abi-whitelists 2.6.32-696.1.1.el6, kernel-debuginfo-common-i686 2.6.32-696.1.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.1.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-696.1.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.1.1.el6
    fixed: vendor fix RHSA-2017:0892
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-514.21.1.rt56.438.el7, kernel-rt-trace 3.10.0-514.21.1.rt56.438.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-514.21.1.rt56.438.el7
    fixed: vendor fix RHSA-2017:1298
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-696.1.1.el6, kernel 2.6.32-696.1.1.el6, kernel-kdump 2.6.32-696.1.1.el6, kernel-firmware 2.6.32-696.1.1.el6, kernel-bootwrapper 2.6.32-696.1.1.el6, kernel-abi-whitelists 2.6.32-696.1.1.el6, +4 more
    fixed: vendor fix RHSA-2017:0892
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-514.21.1.el7, kernel 3.10.0-514.21.1.el7, python-perf 3.10.0-514.21.1.el7, kernel-kdump 3.10.0-514.21.1.el7, kernel-tools 3.10.0-514.21.1.el7, kernel-tools-libs 3.10.0-514.21.1.el7, +6 more
    fixed: vendor fix RHSA-2017:1308
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-696.1.1.el6, kernel-debuginfo-common-i686 2.6.32-696.1.1.el6, kernel-debuginfo-common-ppc64 2.6.32-696.1.1.el6, kernel-debuginfo-common-s390x 2.6.32-696.1.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.1.1.el6
    fixed: vendor fix RHSA-2017:0892
show 7 more
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-514.21.1.el7, kernel-debuginfo-common-x86_64 3.10.0-514.21.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-514.21.1.el7
    fixed: vendor fix RHSA-2017:1308
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-696.1.1.el6, kernel 2.6.32-696.1.1.el6, kernel-firmware 2.6.32-696.1.1.el6, kernel-abi-whitelists 2.6.32-696.1.1.el6, kernel-debuginfo-common-i686 2.6.32-696.1.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.1.1.el6
    fixed: vendor fix RHSA-2017:0892
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-514.21.1.el7, kernel 3.10.0-514.21.1.el7, python-perf 3.10.0-514.21.1.el7, kernel-tools 3.10.0-514.21.1.el7, kernel-tools-libs 3.10.0-514.21.1.el7, kernel-abi-whitelists 3.10.0-514.21.1.el7, +1 more
    fixed: vendor fix RHSA-2017:1308
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-696.1.1.el6, kernel-debuginfo-common-i686 2.6.32-696.1.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.1.1.el6
    fixed: vendor fix RHSA-2017:0892
  • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.21.1.el7
    fixed: vendor fix RHSA-2017:1308
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-514.rt56.221.el6rt, kernel-rt-trace 3.10.0-514.rt56.221.el6rt, kernel-rt-vanilla 3.10.0-514.rt56.221.el6rt, kernel-rt-firmware 3.10.0-514.rt56.221.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-514.rt56.221.el6rt
    fixed: vendor fix RHSA-2017:1297
  • Red Hat Enterprise Linux 5 kernel
    not 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

2.97% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/77da160530dd1dc94f6ae15a981f24e5f0021e84 referenced PoC, tagged "exploit" by a source, unverified
  • git.kernel.org http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=77da160530dd1dc94f6ae15a981f24e5f0021e84 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
Technology feeds

References

Sources

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.