Description
The do_tmem_control function in the Transcendent Memory (TMEM) in Xen 4.0, 4.1, and 4.2 does not properly check privileges, which allows local guest OS users to access control stack operations via unspecified vectors. NOTE: this issue was originally published as part of CVE-2012-3497, which was too general; CVE-2012-3497 has been SPLIT into this ID and others.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xen | 4.1.4-1 | — |
| Debian 13 | xen | 4.1.4-1 | — |
| Debian 12 | xen | 4.1.4-1 | — |
References
- 55082 third-party-advisory
- 1027482 vdb-entry
- http://wiki.xen.org/wiki/Security_Announcements#XSA-15_multiple_TMEM_hypercall_vulnerabilities
- GLSA-201309-24 vendor-advisory
- 55410 vdb-entry
- [oss-security] 20120905 Xen Security Advisory 15 (CVE-2012-3497) - multiple TMEM hypercall vulnerabilities mailing-list
- xen-tmem-priv-esc(78268) vdb-entry
- 85199 vdb-entry
- [Xen-announce] 20120905 Xen Security Advisory 15 (CVE-2012-3497) - multiple TMEM hypercall vulnerabilities mailing-list
- 50472 third-party-advisory
- GLSA-201604-03 vendor-advisory