[Pkg-xen-devel] Bug#976109: xen: CVE-2020-29040

[Salvatore Bonaccorso]

Source: xen
Version: 4.14.0+80-gd101b417b7-1
Severity: grave
Tags: security upstream
Justification: user security hole
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for xen.

CVE-2020-29040[0]:
| An issue was discovered in Xen through 4.14.x allowing x86 HVM guest
| OS users to cause a denial of service (stack corruption), cause a data
| leak, or possibly gain privileges because of an off-by-one error.
| NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-29040
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29040
[1] https://xenbits.xen.org/xsa/advisory-355.html

Regards,
Salvatore