NULL Pointer Dereference Affecting kernel-docs package, versions <4.12.14-25.19.1
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-SLES150-KERNELDOCS-2761362
- published14 Apr 2022
- disclosed2 Oct 2018
Introduced: 2 Oct 2018
CVE-2018-13093 (opens in a new tab)How to fix?
Upgrade SLES:15.0 kernel-docs to version 4.12.14-25.19.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-docs package and not the kernel-docs package as distributed by SLES.
See How to fix? for SLES:15.0 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://www.suse.com/security/cve/CVE-2018-13093.html
- https://bugzilla.suse.com/1100001
- https://access.redhat.com/errata/RHSA-2019:2029
- https://access.redhat.com/errata/RHSA-2019:2043
- https://bugzilla.kernel.org/show_bug.cgi?id=199367
- https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=for-next&id=afca6c5b2595fc44383919fba740c194b0b76aff
- https://github.com/torvalds/linux/commit/afca6c5b2595fc44383919fba740c194b0b76aff
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4118-1/