Description
The (1) memc_save_get_next_page, (2) tmemc_restore_put_page and (3) tmemc_restore_flush_page functions in the Transcendent Memory (TMEM) in Xen 4.0, 4.1, and 4.2 do not check for negative id pools, which allows local guest OS users to cause a denial of service (memory corruption and host crash) or possibly execute arbitrary code 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-memcsavegetnextpage-code-exec(80326) 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