CVE Vulnerabilities

CVE-2015-8961

Use After Free

Published: Nov 16, 2016 | Modified: Apr 12, 2025
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
9.3 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
6.2 MODERATE
AV:L/AC:H/Au:N/C:C/I:C/A:C
RedHat/V3
7 MODERATE
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM

The __ext4_journal_stop function in fs/ext4/ext4_jbd2.c in the Linux kernel before 4.3.3 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging improper access to a certain error field.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Linux_kernel Linux 3.10.85 (including) 3.12 (excluding)
Linux_kernel Linux 3.12.46 (including) 3.12.52 (excluding)
Linux_kernel Linux 3.14.49 (including) 3.14.59 (excluding)
Linux_kernel Linux 3.18.20 (including) 3.18.54 (excluding)
Linux_kernel Linux 4.1.4 (including) 4.1.15 (excluding)
Linux_kernel Linux 4.2 (including) 4.2.8 (excluding)
Linux_kernel Linux 4.3 (including) 4.3.3 (excluding)
Linux Ubuntu esm-infra-legacy/trusty *
Linux Ubuntu trusty *
Linux Ubuntu trusty/esm *
Linux Ubuntu upstream *
Linux Ubuntu vivid/ubuntu-core *
Linux-armadaxp Ubuntu upstream *
Linux-aws Ubuntu upstream *
Linux-flo Ubuntu trusty *
Linux-flo Ubuntu upstream *
Linux-gke Ubuntu upstream *
Linux-goldfish Ubuntu trusty *
Linux-goldfish Ubuntu upstream *
Linux-grouper Ubuntu trusty *
Linux-grouper Ubuntu upstream *
Linux-hwe Ubuntu upstream *
Linux-hwe-edge Ubuntu upstream *
Linux-linaro-omap Ubuntu precise *
Linux-linaro-omap Ubuntu upstream *
Linux-linaro-shared Ubuntu precise *
Linux-linaro-shared Ubuntu upstream *
Linux-linaro-vexpress Ubuntu precise *
Linux-linaro-vexpress Ubuntu upstream *
Linux-lts-quantal Ubuntu precise *
Linux-lts-quantal Ubuntu upstream *
Linux-lts-raring Ubuntu precise *
Linux-lts-raring Ubuntu upstream *
Linux-lts-saucy Ubuntu precise *
Linux-lts-saucy Ubuntu upstream *
Linux-lts-trusty Ubuntu precise *
Linux-lts-trusty Ubuntu upstream *
Linux-lts-utopic Ubuntu trusty *
Linux-lts-utopic Ubuntu upstream *
Linux-lts-vivid Ubuntu trusty *
Linux-lts-vivid Ubuntu upstream *
Linux-lts-wily Ubuntu trusty *
Linux-lts-wily Ubuntu upstream *
Linux-lts-xenial Ubuntu upstream *
Linux-maguro Ubuntu trusty *
Linux-maguro Ubuntu upstream *
Linux-mako Ubuntu trusty *
Linux-mako Ubuntu upstream *
Linux-manta Ubuntu trusty *
Linux-manta Ubuntu upstream *
Linux-qcm-msm Ubuntu precise *
Linux-qcm-msm Ubuntu upstream *
Linux-raspi2 Ubuntu upstream *
Linux-raspi2 Ubuntu vivid/ubuntu-core *
Linux-snapdragon Ubuntu upstream *
Linux-ti-omap4 Ubuntu upstream *

Potential Mitigations

References