NULL Pointer Dereference Affecting perf package, versions <0:3.10.0-1062.el7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS7-PERF-2138545
- published26 Jul 2021
- disclosed12 Apr 2018
Introduced: 12 Apr 2018
CVE-2018-13093 (opens in a new tab)How to fix?
Upgrade Centos:7 perf to version 0:3.10.0-1062.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during allocation.
References
- https://access.redhat.com/security/cve/CVE-2018-13093
- https://bugzilla.kernel.org/show_bug.cgi?id=199367
- https://github.com/torvalds/linux/commit/afca6c5b2595fc44383919fba740c194b0b76aff
- https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=for-next&id=afca6c5b2595fc44383919fba740c194b0b76aff
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
- https://access.redhat.com/errata/RHSA-2019:2029
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4118-1/