UBUNTU-CVE-2019-13233

Details

In arch/x86/lib/insn-eval.c in the Linux kernel before 5.1.9, there is a use-after-free for access to an LDT entry because of a race condition between modify_ldt() and a #BR exception for an MPX bounds violation.

Affected Packages(31 packages)

linux-aws-hwe

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1047.49~16.04.1

linux-azure

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1055.60

linux-gcp

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1040.42~16.04.1

linux-hwe

Ubuntu 16.04 LTS

Fixed in:

4.15.0-58.64~16.04.1

linux-oracle

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1021.23~16.04.1

linux

Ubuntu 18.04 LTS

Fixed in:

4.15.0-58.64

linux-aws

Ubuntu 18.04 LTS

Fixed in:

4.15.0-1047.49

linux-azure

Ubuntu 18.04 LTS

Fixed in:

5.0.0-1014.14~18.04.1

linux-gcp

Ubuntu 18.04 LTS

Fixed in:

4.15.0-1040.42

linux-gke-4.15

Ubuntu 18.04 LTS

Fixed in:

4.15.0-1040.42

References

REPORT

https://bugs.chromium.org/p/project-zero/issues/detail?id=1879

REPORT

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de9f869616dd95e95c00bdd6b0fcd3421e8a4323

REPORT

https://ubuntu.com/security/CVE-2019-13233

ADVISORY

https://ubuntu.com/security/notices/USN-4093-1

ADVISORY

https://ubuntu.com/security/notices/USN-4094-1

ADVISORY

https://ubuntu.com/security/notices/USN-4117-1

ADVISORY

https://ubuntu.com/security/notices/USN-4118-1

REPORT

https://www.cve.org/CVERecord?id=CVE-2019-13233