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Multiples vulnérabilités dans Xen
Advisory ansehen veröffentlicht 2026-10-14
Eine veröffentlichte Sicherheitsmeldung; die Schwachstellen unten werden von ihr beschrieben.
01
beschreibt (13)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2026-79611US | — | — | ||
For XSA-308 logic was introduced, as VMX VMEntry checks do not like the
exact combination of state which occurs when #DB in intercepted, Single
Stepping is active, and blocked by S… | ||||
| CVE-2026-79610US | — | — | ||
XSA-501 was about issues with v1 -> v2 and v2 -> v1 changes racing certain
other grant table operations. Sadly a v2 -> v1 -> v2 change has yet
another effect which wasn't accounte… | ||||
| CVE-2026-79609US | — | — | ||
XPTI (Xen Page Table Isolation) was introduced to mitigate Meltdown
(CVE-2017-5754, one aspect of XSA-254). This involves copying 64-bit PV
guest page table entries from guest-cho… | ||||
| CVE-2026-79608US | — | — | ||
The workaround for XSA-433 (Zenbleed, CVE-2023-20593) was later
re-worked to better integrate with other manipulations of the same MSR.
In this rework an inverted conditional was i… | ||||
| CVE-2026-79607US | — | — | ||
During Xenstore live update the state record for a Xenstore watch with
specified watch depth is written with two bytes missing. This results
in an inconsistent state when reading… | ||||
| CVE-2026-102702US | — | — | ||
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
1) XSA-437 (CVE-2023-34321) addressed issues with… | ||||
| CVE-2026-102700US | — | — | ||
With its original introduction, GNTTAB_cache_flush was made available
uniformly. XSA-232 (CVE-2017-14318) then covered an omitted NULL
pointer check, yet the addition of that chec… | ||||
| CVE-2026-102699US | — | — | ||
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
1) XSA-437 (CVE-2023-34321) addressed issues with… | ||||
| CVE-2023-34321US | low3.3 | — | ||
Arm provides multiple helpers to clean & invalidate the cache
for a given region. This is, for instance, used when allocating
guest memory to ensure any writes (such as the ones d… | ||||
| CVE-2023-20593US | medium5.5OT erhöht | Exploit | ||
An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information. | ||||
| CVE-2017-5754US | medium5.6 | Exploit | ||
Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access v… | ||||
| CVE-2017-14318US | medium6.5 | — | ||
An issue was discovered in Xen 4.5.x through 4.9.x. The function `__gnttab_cache_flush` handles GNTTABOP_cache_flush grant table operations. It checks to see if the calling domain… | ||||
| CVE-2026-102701US | — | — | ||
02
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
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