CVE-2023-34322
published 2024-01-05CVE-2023-34322: For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode. Since Xen itself needs to be mapped…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.23%
13.8th percentile
For migration as well as to work around kernels unaware of L1TF (see
XSA-273), PV guests may be run in shadow paging mode. Since Xen itself
needs to be mapped when PV guests run, Xen and shadowed PV guests run
directly the respective shadow page tables. For 64-bit PV guests this
means running on the shadow of the guest root page table.
In the course of dealing with shortage of memory in the shadow pool
associated with a domain, shadows of page tables may be torn down. This
tearing down may include the shadow root page table that the CPU in
question is presently running on. While a precaution exists to
supposedly prevent the tearing down of the underlying live page table,
the time window covered by that precaution isn't large enough.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | xen | < xen 4.17.2+76-ge1f9cb16e2-1~deb12u1 (bookworm) | xen 4.17.2+76-ge1f9cb16e2-1~deb12u1 (bookworm) |
| xen | xen | >= 0 < 4.15.5-r1 | 4.15.5-r1 |
| xen | xen | >= 0 < 4.16.5-r1 | 4.16.5-r1 |
| xen | xen | >= 0 < 4.16.5-r1 | 4.16.5-r1 |
| xen | xen | >= 0 < 4.17.2-r1 | 4.17.2-r1 |
| xen | xen | >= 0 < 4.17.2-r1 | 4.17.2-r1 |
| xen | xen | >= 0 < 4.17.2-r1 | 4.17.2-r1 |
| xen | xen | >= 0 < 4.17.2-r1 | 4.17.2-r1 |
| xen | xen | >= 0 < 4.17.2-r1 | 4.17.2-r1 |
| xen | xen | >= 0 < 4.17.2-r1 | 4.17.2-r1 |
| xen | xen | >= 0 < 4.17.2+76-ge1f9cb16e2-1~deb12u1 | 4.17.2+76-ge1f9cb16e2-1~deb12u1 |
| xen | xen | >= 0 < 4.17.2+55-g0b56bed864-1 | 4.17.2+55-g0b56bed864-1 |
| xen | xen | >= 0 < 4.17.2+55-g0b56bed864-1 | 4.17.2+55-g0b56bed864-1 |
| xen | xen | >= 3.2.0 < 4.15.0 | 4.15.0 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
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OSV
CVE-2023-34322: For migration as well as to work around kernels unaware of L1TF (see
XSA-273), PV guests may be run in shadow paging mode
osv·2024-01-05·CVSS 7.8
CVE-2023-34322 [HIGH] CVE-2023-34322: For migration as well as to work around kernels unaware of L1TF (see
XSA-273), PV guests may be run in shadow paging mode
For migration as well as to work around kernels unaware of L1TF (see
XSA-273), PV guests may be run in shadow paging mode. Since Xen itself
needs to be mapped when PV guests run, Xen and shadowed PV guests run
directly the respective shadow page tables. For 64-bit PV guests this
means running on the shadow of the guest root page table.
In the course of dealing with shortage of memory in the shadow pool
associated with a domain, shadows of page tables may be torn down. This
tearing down may include the shadow root page table that the CPU in
question is presently running on. While a precaution exists to
supposedly prevent the tearing down of the underlying live page table,
the time window covered by that precaution isn't large enough.
GHSA
GHSA-3qxp-p56x-r4h3: For migration as well as to work around kernels unaware of L1TF (see
XSA-273), PV guests may be run in shadow paging mode
ghsa_unreviewed·2024-01-05
CVE-2023-34322 [HIGH] CWE-273 GHSA-3qxp-p56x-r4h3: For migration as well as to work around kernels unaware of L1TF (see
XSA-273), PV guests may be run in shadow paging mode
For migration as well as to work around kernels unaware of L1TF (see
XSA-273), PV guests may be run in shadow paging mode. Since Xen itself
needs to be mapped when PV guests run, Xen and shadowed PV guests run
directly the respective shadow page tables. For 64-bit PV guests this
means running on the shadow of the guest root page table.
In the course of dealing with shortage of memory in the shadow pool
associated with a domain, shadows of page tables may be torn down. This
tearing down may include the shadow root page table that the CPU in
question is presently running on. While a precaution exists to
supposedly prevent the tearing down of the underlying live page table,
the time window covered by that precaution isn't large enough.
OSV
CVE-2023-34322: For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode
osv·2024-01-05·CVSS 7.8
CVE-2023-34322 [HIGH] CVE-2023-34322: For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode
For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode. Since Xen itself needs to be mapped when PV guests run, Xen and shadowed PV guests run directly the respective shadow page tables. For 64-bit PV guests this means running on the shadow of the guest root page table. In the course of dealing with shortage of memory in the shadow pool associated with a domain, shadows of page tables may be torn down. This tearing down may include the shadow root page table that the CPU in question is presently running on. While a precaution exists to supposedly prevent the tearing down of the underlying live page table, the time window covered by that precaution isn't large enough.
Debian
CVE-2023-34322: xen - For migration as well as to work around kernels unaware of L1TF (see XSA-273), P...
vendor_debian·2023·CVSS 7.8
CVE-2023-34322 [HIGH] CVE-2023-34322: xen - For migration as well as to work around kernels unaware of L1TF (see XSA-273), P...
For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode. Since Xen itself needs to be mapped when PV guests run, Xen and shadowed PV guests run directly the respective shadow page tables. For 64-bit PV guests this means running on the shadow of the guest root page table. In the course of dealing with shortage of memory in the shadow pool associated with a domain, shadows of page tables may be torn down. This tearing down may include the shadow root page table that the CPU in question is presently running on. While a precaution exists to supposedly prevent the tearing down of the underlying live page table, the time window covered by that precaution isn't large enough.
Scope: local
bookworm: resolved (fixed in 4.17.2+76-ge1f9
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-01-05
Published