vulnerability
Ubuntu: (Multiple Advisories) (CVE-2018-12233): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Jun 12, 2018 | Aug 31, 2018 | Mar 27, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Jun 12, 2018
Added
Aug 31, 2018
Modified
Mar 27, 2026
Description
In the ea_get function in fs/jfs/xattr.c in the Linux kernel through 4.17.1, a memory corruption bug in JFS can be triggered by calling setxattr twice with two different extended attribute names on the same file. This vulnerability can be triggered by an unprivileged user with the ability to create files and execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr.
Solutions
ubuntu-upgrade-linux-image-3-13-0-157-genericubuntu-upgrade-linux-image-3-13-0-157-generic-lpaeubuntu-upgrade-linux-image-3-13-0-157-lowlatencyubuntu-upgrade-linux-image-3-13-0-157-powerpc-e500ubuntu-upgrade-linux-image-3-13-0-157-powerpc-e500mcubuntu-upgrade-linux-image-3-13-0-157-powerpc-smpubuntu-upgrade-linux-image-3-13-0-157-powerpc64-embubuntu-upgrade-linux-image-3-13-0-157-powerpc64-smpubuntu-upgrade-linux-image-4-15-0-1017-oemubuntu-upgrade-linux-image-4-15-0-1018-gcpubuntu-upgrade-linux-image-4-15-0-1020-awsubuntu-upgrade-linux-image-4-15-0-1020-kvmubuntu-upgrade-linux-image-4-15-0-1021-raspi2ubuntu-upgrade-linux-image-4-15-0-1022-azureubuntu-upgrade-linux-image-4-15-0-33-genericubuntu-upgrade-linux-image-4-15-0-33-generic-lpaeubuntu-upgrade-linux-image-4-15-0-33-lowlatencyubuntu-upgrade-linux-image-4-15-0-33-snapdragonubuntu-upgrade-linux-image-4-4-0-1028-awsubuntu-upgrade-linux-image-4-4-0-1032-kvmubuntu-upgrade-linux-image-4-4-0-1066-awsubuntu-upgrade-linux-image-4-4-0-1095-raspi2ubuntu-upgrade-linux-image-4-4-0-1099-snapdragonubuntu-upgrade-linux-image-4-4-0-134-genericubuntu-upgrade-linux-image-4-4-0-134-generic-lpaeubuntu-upgrade-linux-image-4-4-0-134-lowlatencyubuntu-upgrade-linux-image-4-4-0-134-powerpc-e500mcubuntu-upgrade-linux-image-4-4-0-134-powerpc-smpubuntu-upgrade-linux-image-4-4-0-134-powerpc64-embubuntu-upgrade-linux-image-4-4-0-134-powerpc64-smpubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-edgeubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-hwe-16-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-16-04ubuntu-upgrade-linux-image-generic-lpae-lts-xenialubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-hwe-16-04ubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-powerpc-e500ubuntu-upgrade-linux-image-powerpc-e500mcubuntu-upgrade-linux-image-powerpc-e500mc-lts-xenialubuntu-upgrade-linux-image-powerpc-smpubuntu-upgrade-linux-image-powerpc-smp-lts-xenialubuntu-upgrade-linux-image-powerpc64-embubuntu-upgrade-linux-image-powerpc64-emb-lts-xenialubuntu-upgrade-linux-image-powerpc64-smpubuntu-upgrade-linux-image-powerpc64-smp-lts-xenialubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragon
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.