USN-4889-1

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USN-4889-1

Summary: linux, linux-lts-xenial vulnerabilities

Details: Adam Nichols discovered that heap overflows existed in the iSCSI subsystem in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-27365) Adam Nichols discovered that the iSCSI subsystem in the Linux kernel did not properly restrict access to iSCSI transport handles. A local attacker could use this to cause a denial of service or expose sensitive information (kernel pointer addresses). (CVE-2021-27363) Adam Nichols discovered that an out-of-bounds read existed in the iSCSI subsystem in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information (kernel memory). (CVE-2021-27364)

References: https://ubuntu.com/security/notices/USN-4889-1, https://ubuntu.com/security/CVE-2021-27363, https://ubuntu.com/security/CVE-2021-27364, https://ubuntu.com/security/CVE-2021-27365