NULL Pointer Dereference Affecting kernel-bootwrapper package, versions <0:3.10.0-957.el7
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Test your applications- Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-4881983
- published 26 Jul 2021
- disclosed 22 Mar 2018
Introduced: 22 Mar 2018
CVE-2018-1094 Open this link in a new tabHow to fix?
Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-957.el7 or higher.
This issue was patched in RHSA-2018:3083.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
References
- https://access.redhat.com/security/cve/CVE-2018-1094
- http://openwall.com/lists/oss-security/2018/03/29/1
- https://bugzilla.kernel.org/show_bug.cgi?id=199183
- https://bugzilla.redhat.com/show_bug.cgi?id=1560788
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1
- https://access.redhat.com/errata/RHSA-2018:3083
- https://usn.ubuntu.com/3695-1/
- https://usn.ubuntu.com/3695-2/