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CVE-2026-93834

Qemu-kvm: 9pfs: use-after-free race in tlcreate/twalk allows vm guest escape

8.8 HighPublic exploitFix available

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.40%Unchanged since Sep 26, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.8

Qemu-kvm: 9pfs: use-after-free race in tlcreate/twalk allows vm guest escape

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Record
CVE-2026-93834
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-416
Updated
2026-11-02
EUVDEUVD-2026-87092 8.8

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Record
EUVD-2026-87092
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-05
GitHub AdvisoriesGHSA-86c2-8qp8-q2vh 8.8

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the...

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Record
GHSA-86c2-8qp8-q2vh
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-416
Updated
2026-11-02
NVD 8.8

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Record
CVE-2026-93834
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-416
Updated
2026-11-05
OSVBELL-CVE-2026-93834 8.8
Record
BELL-CVE-2026-93834
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-07
OSVDEBIAN-CVE-2026-93834 8.8

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Record
DEBIAN-CVE-2026-93834
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-05
Show 10 moreShow less
OSVOESA-2026-4584 8.8

qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.(CVE-2026-93834)

Record
OESA-2026-4584
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-4585 8.8

qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.(CVE-2026-93834)

Record
OESA-2026-4585
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-4586 8.8

qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.(CVE-2026-93834)

Record
OESA-2026-4586
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-4587 8.8

qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.(CVE-2026-93834)

Record
OESA-2026-4587
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-93834 8.8

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Record
UBUNTU-CVE-2026-93834
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVAZL-105278 No score

CVE-2026-93834 affecting package qemu for versions less than 10.1.0-2

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Record
AZL-105278
Updated
2026-11-05
OSVopenSUSE-SU-2026:12049-1 No score

qemu-11.1.1-2.1 on GA media

These are all security issues fixed in the qemu-11.1.1-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:12049-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:22047-1 No score

Security update for qemu

This update for qemu fixes the following issues:

Security issues fixed:

  • CVE-2026-81627: missing writable RAM alias validation in the VAPIC setup hypercall allows a privileged guest user to bypass chipset D_LCK protection and injecting code into System Management Mode memory (bsc#1282077).
  • CVE-2026-93834: hw/9pfs: mutate FID path from main thread only (bsc#1282578).

Changes for qemu:

  • Bugfixes:
  • [openSUSE][RPM] spec: drop qemu-ipxe Requires for ppc (bsc#1282918)
  • virtio: fix queue size validation against allocated maximum (bsc#1279962)
  • virtio-mmio: fix QUEUE_NUM_MAX (bsc#1279962)
  • target/ppc/kvm: Use host compatibility mode for nested guests (bsc#1263864)
  • target/ppc/kvm: Add support for querying host compatibility mode (bsc#1263864)
  • linux-headers: Update to include KVM_CAP_PPC_COMPAT_CAPS (bsc#1263864)
  • linux-headers: Update to Linux v7.2-rc1 with KVM_S390_VM_CPU_FEAT_ASTFLEIE2 (bsc#1263864)
  • linux-headers: Update to Linux v7.1-rc4 (bsc#1263864)
  • scripts/update-linux-headers: Add typelimits.h (bsc#1263864)
  • update-linux-headers: Inject VIRTIO_RING_NO_LEGACY in virtio_ring.h (bsc#1263864)
  • linux-headers: Add nitro_enclaves.h (bsc#1263864)
  • scripts/update-linux-headers: Add Nitro Enclaves header (bsc#1263864)
  • standard-headers: Update virtio_spi.h from Linux v6.18-rc3 (bsc#1263864)
  • linux-headers: Update to Linux v6.19-rc1 (bsc#1263864)
  • update-linux-headers: Remove "asm-s390/unistd_32.h" (bsc#1263864)
  • linux-headers: Update to Linux v6.18-rc3 (bsc#1263864)
  • linux-headers/linux: Add mshv.h headers (bsc#1263864)
  • include/hw/hyperv: Add MSHV ABI header definitions (bsc#1263864)
  • linux-headers: Update to Linux v6.17-rc1 (bsc#1263864)
  • linux-headers: deal with counted_by annotation (bsc#1263864)
  • linux-headers: Remove the 32-bit arm headers (bsc#1263864)
  • update Linux headers to KVM tree master (bsc#1263864)
Record
openSUSE-SU-2026:22047-1
Updated
2026-11-02
OSVSUSE-SU-2026:24115-1 No score

Security update for qemu

This update for qemu fixes the following issues:

Security issues fixed:

  • CVE-2026-81627: missing writable RAM alias validation in the VAPIC setup hypercall allows a privileged guest user to bypass chipset D_LCK protection and injecting code into System Management Mode memory (bsc#1282077).
  • CVE-2026-93834: hw/9pfs: mutate FID path from main thread only (bsc#1282578).

Changes for qemu:

  • Bugfixes:
  • [openSUSE][RPM] spec: drop qemu-ipxe Requires for ppc (bsc#1282918)
  • virtio: fix queue size validation against allocated maximum (bsc#1279962)
  • virtio-mmio: fix QUEUE_NUM_MAX (bsc#1279962)
  • target/ppc/kvm: Use host compatibility mode for nested guests (bsc#1263864)
  • target/ppc/kvm: Add support for querying host compatibility mode (bsc#1263864)
  • linux-headers: Update to include KVM_CAP_PPC_COMPAT_CAPS (bsc#1263864)
  • linux-headers: Update to Linux v7.2-rc1 with KVM_S390_VM_CPU_FEAT_ASTFLEIE2 (bsc#1263864)
  • linux-headers: Update to Linux v7.1-rc4 (bsc#1263864)
  • scripts/update-linux-headers: Add typelimits.h (bsc#1263864)
  • update-linux-headers: Inject VIRTIO_RING_NO_LEGACY in virtio_ring.h (bsc#1263864)
  • linux-headers: Add nitro_enclaves.h (bsc#1263864)
  • scripts/update-linux-headers: Add Nitro Enclaves header (bsc#1263864)
  • standard-headers: Update virtio_spi.h from Linux v6.18-rc3 (bsc#1263864)
  • linux-headers: Update to Linux v6.19-rc1 (bsc#1263864)
  • update-linux-headers: Remove "asm-s390/unistd_32.h" (bsc#1263864)
  • linux-headers: Update to Linux v6.18-rc3 (bsc#1263864)
  • linux-headers/linux: Add mshv.h headers (bsc#1263864)
  • include/hw/hyperv: Add MSHV ABI header definitions (bsc#1263864)
  • linux-headers: Update to Linux v6.17-rc1 (bsc#1263864)
  • linux-headers: deal with counted_by annotation (bsc#1263864)
  • linux-headers: Remove the 32-bit arm headers (bsc#1263864)
  • update Linux headers to KVM tree master (bsc#1263864)
Record
SUSE-SU-2026:24115-1
Updated
2026-11-02
OSVSUSE-SU-2026:24159-1 No score

Security update for qemu

This update for qemu fixes the following issues:

Security issues fixed:

  • CVE-2026-81627: missing writable RAM alias validation in the VAPIC setup hypercall allows a privileged guest user to bypass chipset D_LCK protection and injecting code into System Management Mode memory (bsc#1282077).
  • CVE-2026-93834: hw/9pfs: mutate FID path from main thread only (bsc#1282578).

Changes for qemu:

  • Bugfixes:
  • [openSUSE][RPM] spec: drop qemu-ipxe Requires for ppc (bsc#1282918)
  • virtio: fix queue size validation against allocated maximum (bsc#1279962)
  • virtio-mmio: fix QUEUE_NUM_MAX (bsc#1279962)
  • target/ppc/kvm: Use host compatibility mode for nested guests (bsc#1263864)
  • target/ppc/kvm: Add support for querying host compatibility mode (bsc#1263864)
  • linux-headers: Update to include KVM_CAP_PPC_COMPAT_CAPS (bsc#1263864)
  • linux-headers: Update to Linux v7.2-rc1 with KVM_S390_VM_CPU_FEAT_ASTFLEIE2 (bsc#1263864)
  • linux-headers: Update to Linux v7.1-rc4 (bsc#1263864)
  • scripts/update-linux-headers: Add typelimits.h (bsc#1263864)
  • update-linux-headers: Inject VIRTIO_RING_NO_LEGACY in virtio_ring.h (bsc#1263864)
  • linux-headers: Add nitro_enclaves.h (bsc#1263864)
  • scripts/update-linux-headers: Add Nitro Enclaves header (bsc#1263864)
  • standard-headers: Update virtio_spi.h from Linux v6.18-rc3 (bsc#1263864)
  • linux-headers: Update to Linux v6.19-rc1 (bsc#1263864)
  • update-linux-headers: Remove "asm-s390/unistd_32.h" (bsc#1263864)
  • linux-headers: Update to Linux v6.18-rc3 (bsc#1263864)
  • linux-headers/linux: Add mshv.h headers (bsc#1263864)
  • include/hw/hyperv: Add MSHV ABI header definitions (bsc#1263864)
  • linux-headers: Update to Linux v6.17-rc1 (bsc#1263864)
  • linux-headers: deal with counted_by annotation (bsc#1263864)
  • linux-headers: Remove the 32-bit arm headers (bsc#1263864)
  • update Linux headers to KVM tree master (bsc#1263864)
Record
SUSE-SU-2026:24159-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
qemu
Azure Linux:3
 before 10.1.0-2
10.1.0-2
qemu
Alpaquita:23
 7.1.0-r4 up to 9.0.4-r5
9.0.4-r5
qemu
Alpaquita:25
 10.0.0-r1 up to 10.0.15-r0
10.0.15-r0
qemu
Debian:12
 All versions, plus listed versions
1:10.0.0+ds-11:10.0.0+ds-21:10.0.0+ds-2~bpo12+11:10.0.0+ds-2~bpo12+21:10.0.0~rc0+ds-1
Show 45 moreShow less
1:10.0.0~rc0+ds-21:10.0.0~rc1+ds-11:10.0.0~rc1+ds-21:10.0.0~rc2+ds-11:10.0.0~rc2+ds-21:10.0.0~rc3+ds-11:10.0.0~rc3+ds-21:10.0.2+ds-11:10.0.2+ds-21:10.0.2+ds-2~bpo12+11:10.0.3+ds-11:10.0.3+ds-21:10.0.3+ds-31:10.0.3+ds-41:10.1.0+ds-11:10.1.0+ds-21:10.1.0+ds-31:10.1.0+ds-41:10.1.0+ds-51:10.1.0~rc0+ds-11:10.1.0~rc0+ds-21:10.1.0~rc0+ds-31:10.1.0~rc0+ds-41:10.1.0~rc1+ds-11:10.1.0~rc1+ds-1a1:10.1.0~rc1+ds-1b1:10.1.0~rc1+ds-21:10.1.0~rc1+ds-31:10.1.0~rc2+ds-11:10.1.0~rc3+ds-11:10.1.0~rc3+ds-21:10.1.1+ds-11:10.1.2+ds-11:10.1.2+ds-21:10.1.2+ds-31:10.1.3+ds-11:10.2.0+ds-11:10.2.0+ds-21:10.2.0~rc1+ds-11:10.2.1+ds-11:10.2.2+ds-11:11.0.0+ds-11:11.0.0+ds-21:11.0.0~rc0+ds-11:11.0.0~rc0+ds-2
 None known
qemu
Debian:13
 All versions, plus listed versions
1:10.0.10+ds-0+deb13u11:10.0.11+ds-0+deb13u11:10.0.13+ds-0+deb13u11:10.0.2+ds-21:10.0.2+ds-2+deb13u1
Show 45 moreShow less
1:10.0.2+ds-2+deb13u1~bpo12+11:10.0.3+ds-0+deb13u11:10.0.3+ds-11:10.0.3+ds-21:10.0.3+ds-31:10.0.3+ds-41:10.0.6+ds-0+deb13u11:10.0.6+ds-0+deb13u21:10.0.7+ds-0+deb13u11:10.0.8+ds-0+deb13u11:10.1.0+ds-11:10.1.0+ds-21:10.1.0+ds-31:10.1.0+ds-41:10.1.0+ds-51:10.1.0~rc0+ds-11:10.1.0~rc0+ds-21:10.1.0~rc0+ds-31:10.1.0~rc0+ds-41:10.1.0~rc1+ds-11:10.1.0~rc1+ds-1a1:10.1.0~rc1+ds-1b1:10.1.0~rc1+ds-21:10.1.0~rc1+ds-31:10.1.0~rc2+ds-11:10.1.0~rc3+ds-11:10.1.0~rc3+ds-21:10.1.1+ds-11:10.1.2+ds-11:10.1.2+ds-21:10.1.2+ds-31:10.1.3+ds-11:10.2.0+ds-11:10.2.0+ds-21:10.2.0~rc1+ds-11:10.2.1+ds-11:10.2.2+ds-11:11.0.0+ds-11:11.0.0+ds-21:11.0.0~rc0+ds-11:11.0.0~rc0+ds-21:11.0.0~rc1+ds-11:11.0.0~rc1+ds-21:11.0.0~rc1+ds-31:11.0.0~rc2+ds-1
 None known
qemu
Debian:14
 before 1:11.1.2+ds-1, plus listed versions
1:10.0.2+ds-21:10.0.3+ds-11:10.0.3+ds-21:10.0.3+ds-31:10.0.3+ds-4
Show 45 moreShow less
1:10.1.0+ds-11:10.1.0+ds-21:10.1.0+ds-31:10.1.0+ds-41:10.1.0+ds-51:10.1.0~rc0+ds-11:10.1.0~rc0+ds-21:10.1.0~rc0+ds-31:10.1.0~rc0+ds-41:10.1.0~rc1+ds-11:10.1.0~rc1+ds-1a1:10.1.0~rc1+ds-1b1:10.1.0~rc1+ds-21:10.1.0~rc1+ds-31:10.1.0~rc2+ds-11:10.1.0~rc3+ds-11:10.1.0~rc3+ds-21:10.1.1+ds-11:10.1.2+ds-11:10.1.2+ds-21:10.1.2+ds-31:10.1.3+ds-11:10.2.0+ds-11:10.2.0+ds-21:10.2.0~rc1+ds-11:10.2.1+ds-11:10.2.2+ds-11:11.0.0+ds-11:11.0.0+ds-21:11.0.0~rc0+ds-11:11.0.0~rc0+ds-21:11.0.0~rc1+ds-11:11.0.0~rc1+ds-21:11.0.0~rc1+ds-31:11.0.0~rc2+ds-11:11.0.0~rc2+ds-21:11.0.0~rc3+ds-11:11.0.1+ds-11:11.0.2+ds-11:11.0.2+ds-21:11.0.2+ds-2~bpo13+11:11.0.3+ds-11:11.0.3+ds-21:11.1.0+ds-11:11.1.0+ds-2
1:11.1.2+ds-1
qemu
openEuler:22.03-LTS-SP4
 before 6.2.0-121.oe2203sp4
6.2.0-121.oe2203sp4
qemu
openEuler:24.03-LTS-SP1
 before 8.2.0-63.oe2403sp1
8.2.0-63.oe2403sp1
qemu
openEuler:24.03-LTS-SP3
 before 8.2.0-94.oe2403sp3
8.2.0-94.oe2403sp3
qemu
openEuler:24.03-LTS-SP4
 before 8.2.0-90.oe2403sp4
8.2.0-90.oe2403sp4
Show 18 moreShow less
Affected packages
PackageAffectedFixed
qemu
SUSE:Linux Micro 6.2
From an advisory covering 2 CVEs
 before 10.0.13-160000.2.1
10.0.13-160000.2.1
qemu
SUSE:Linux Enterprise Server 16.0
From an advisory covering 2 CVEs
 before 10.0.13-160000.2.1
10.0.13-160000.2.1
qemu-linux-user
SUSE:Linux Enterprise Server 16.0
From an advisory covering 2 CVEs
 before 10.0.13-160000.2.1
10.0.13-160000.2.1
qemu
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 2 CVEs
 before 10.0.13-160000.2.1
10.0.13-160000.2.1
qemu-linux-user
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 2 CVEs
 before 10.0.13-160000.2.1
10.0.13-160000.2.1
qemu
Ubuntu:Pro:14.04:LTS
 All versions, plus listed versions
1.5.0+dfsg-3ubuntu51.5.0+dfsg-3ubuntu61.6.0+dfsg-2ubuntu11.6.0+dfsg-2ubuntu21.6.0+dfsg-2ubuntu3
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1.6.0+dfsg-2ubuntu41.7.0+dfsg-2ubuntu11.7.0+dfsg-2ubuntu21.7.0+dfsg-2ubuntu31.7.0+dfsg-2ubuntu41.7.0+dfsg-2ubuntu51.7.0+dfsg-2ubuntu71.7.0+dfsg-2ubuntu81.7.0+dfsg-2ubuntu91.7.0+dfsg-3ubuntu1~ppa11.7.0+dfsg-3ubuntu11.7.0+dfsg-3ubuntu21.7.0+dfsg-3ubuntu31.7.0+dfsg-3ubuntu41.7.0+dfsg-3ubuntu51.7.0+dfsg-3ubuntu61.7.0+dfsg-3ubuntu72.0.0~rc1+dfsg-0ubuntu12.0.0~rc1+dfsg-0ubuntu22.0.0~rc1+dfsg-0ubuntu32.0.0~rc1+dfsg-0ubuntu3.12.0.0+dfsg-2ubuntu12.0.0+dfsg-2ubuntu1.12.0.0+dfsg-2ubuntu1.22.0.0+dfsg-2ubuntu1.32.0.0+dfsg-2ubuntu1.52.0.0+dfsg-2ubuntu1.62.0.0+dfsg-2ubuntu1.72.0.0+dfsg-2ubuntu1.82.0.0+dfsg-2ubuntu1.92.0.0+dfsg-2ubuntu1.102.0.0+dfsg-2ubuntu1.112.0.0+dfsg-2ubuntu1.132.0.0+dfsg-2ubuntu1.142.0.0+dfsg-2ubuntu1.152.0.0+dfsg-2ubuntu1.162.0.0+dfsg-2ubuntu1.172.0.0+dfsg-2ubuntu1.182.0.0+dfsg-2ubuntu1.192.0.0+dfsg-2ubuntu1.202.0.0+dfsg-2ubuntu1.212.0.0+dfsg-2ubuntu1.222.0.0+dfsg-2ubuntu1.242.0.0+dfsg-2ubuntu1.252.0.0+dfsg-2ubuntu1.26
 None known
qemu
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
1:2.3+dfsg-5ubuntu91:2.3+dfsg-5ubuntu101:2.4+dfsg-4ubuntu11:2.4+dfsg-4ubuntu21:2.4+dfsg-4ubuntu3
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1:2.4+dfsg-5ubuntu31:2.5+dfsg-1ubuntu21:2.5+dfsg-1ubuntu31:2.5+dfsg-1ubuntu41:2.5+dfsg-1ubuntu51:2.5+dfsg-5ubuntu11:2.5+dfsg-5ubuntu21:2.5+dfsg-5ubuntu41:2.5+dfsg-5ubuntu61:2.5+dfsg-5ubuntu71:2.5+dfsg-5ubuntu101:2.5+dfsg-5ubuntu10.11:2.5+dfsg-5ubuntu10.21:2.5+dfsg-5ubuntu10.31:2.5+dfsg-5ubuntu10.41:2.5+dfsg-5ubuntu10.51:2.5+dfsg-5ubuntu10.61:2.5+dfsg-5ubuntu10.71:2.5+dfsg-5ubuntu10.81:2.5+dfsg-5ubuntu10.91:2.5+dfsg-5ubuntu10.101:2.5+dfsg-5ubuntu10.111:2.5+dfsg-5ubuntu10.131:2.5+dfsg-5ubuntu10.141:2.5+dfsg-5ubuntu10.151:2.5+dfsg-5ubuntu10.161:2.5+dfsg-5ubuntu10.201:2.5+dfsg-5ubuntu10.211:2.5+dfsg-5ubuntu10.221:2.5+dfsg-5ubuntu10.241:2.5+dfsg-5ubuntu10.251:2.5+dfsg-5ubuntu10.261:2.5+dfsg-5ubuntu10.281:2.5+dfsg-5ubuntu10.291:2.5+dfsg-5ubuntu10.301:2.5+dfsg-5ubuntu10.311:2.5+dfsg-5ubuntu10.321:2.5+dfsg-5ubuntu10.331:2.5+dfsg-5ubuntu10.341:2.5+dfsg-5ubuntu10.351:2.5+dfsg-5ubuntu10.361:2.5+dfsg-5ubuntu10.371:2.5+dfsg-5ubuntu10.381:2.5+dfsg-5ubuntu10.391:2.5+dfsg-5ubuntu10.40
 None known
qemu
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
1:2.10+dfsg-0ubuntu31:2.10+dfsg-0ubuntu41:2.10+dfsg-0ubuntu51:2.11+dfsg-1ubuntu11:2.11+dfsg-1ubuntu2
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1:2.11+dfsg-1ubuntu41:2.11+dfsg-1ubuntu51:2.11+dfsg-1ubuntu61:2.11+dfsg-1ubuntu71:2.11+dfsg-1ubuntu7.11:2.11+dfsg-1ubuntu7.21:2.11+dfsg-1ubuntu7.31:2.11+dfsg-1ubuntu7.41:2.11+dfsg-1ubuntu7.51:2.11+dfsg-1ubuntu7.61:2.11+dfsg-1ubuntu7.71:2.11+dfsg-1ubuntu7.81:2.11+dfsg-1ubuntu7.91:2.11+dfsg-1ubuntu7.101:2.11+dfsg-1ubuntu7.121:2.11+dfsg-1ubuntu7.131:2.11+dfsg-1ubuntu7.141:2.11+dfsg-1ubuntu7.151:2.11+dfsg-1ubuntu7.171:2.11+dfsg-1ubuntu7.181:2.11+dfsg-1ubuntu7.191:2.11+dfsg-1ubuntu7.201:2.11+dfsg-1ubuntu7.211:2.11+dfsg-1ubuntu7.221:2.11+dfsg-1ubuntu7.231:2.11+dfsg-1ubuntu7.251:2.11+dfsg-1ubuntu7.261:2.11+dfsg-1ubuntu7.271:2.11+dfsg-1ubuntu7.281:2.11+dfsg-1ubuntu7.291:2.11+dfsg-1ubuntu7.311:2.11+dfsg-1ubuntu7.321:2.11+dfsg-1ubuntu7.331:2.11+dfsg-1ubuntu7.341:2.11+dfsg-1ubuntu7.351:2.11+dfsg-1ubuntu7.361:2.11+dfsg-1ubuntu7.371:2.11+dfsg-1ubuntu7.381:2.11+dfsg-1ubuntu7.391:2.11+dfsg-1ubuntu7.401:2.11+dfsg-1ubuntu7.411:2.11+dfsg-1ubuntu7.421:2.11+dfsg-1ubuntu7.42+esm11:2.11+dfsg-1ubuntu7.42+esm21:2.11+dfsg-1ubuntu7.42+esm5
 None known
qemu
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
1:4.0+dfsg-0ubuntu91:4.0+dfsg-0ubuntu101:4.2-1ubuntu11:4.2-1ubuntu21:4.2-3ubuntu1
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1:4.2-3ubuntu21:4.2-3ubuntu31:4.2-3ubuntu41:4.2-3ubuntu51:4.2-3ubuntu61:4.2-3ubuntu6.11:4.2-3ubuntu6.21:4.2-3ubuntu6.31:4.2-3ubuntu6.41:4.2-3ubuntu6.51:4.2-3ubuntu6.61:4.2-3ubuntu6.71:4.2-3ubuntu6.81:4.2-3ubuntu6.91:4.2-3ubuntu6.101:4.2-3ubuntu6.111:4.2-3ubuntu6.121:4.2-3ubuntu6.141:4.2-3ubuntu6.151:4.2-3ubuntu6.161:4.2-3ubuntu6.171:4.2-3ubuntu6.181:4.2-3ubuntu6.191:4.2-3ubuntu6.211:4.2-3ubuntu6.231:4.2-3ubuntu6.241:4.2-3ubuntu6.251:4.2-3ubuntu6.261:4.2-3ubuntu6.271:4.2-3ubuntu6.281:4.2-3ubuntu6.291:4.2-3ubuntu6.301:4.2-3ubuntu6.30+esm11:4.2-3ubuntu6.30+esm21:4.2-3ubuntu6.30+esm3
 None known
qemu
Ubuntu:22.04:LTS
 All versions, plus listed versions
1:6.0+dfsg-2expubuntu11:6.0+dfsg-2expubuntu21:6.0+dfsg-2expubuntu41:6.2+dfsg-2ubuntu51:6.2+dfsg-2ubuntu6
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1:6.2+dfsg-2ubuntu6.11:6.2+dfsg-2ubuntu6.21:6.2+dfsg-2ubuntu6.31:6.2+dfsg-2ubuntu6.41:6.2+dfsg-2ubuntu6.51:6.2+dfsg-2ubuntu6.61:6.2+dfsg-2ubuntu6.71:6.2+dfsg-2ubuntu6.81:6.2+dfsg-2ubuntu6.91:6.2+dfsg-2ubuntu6.101:6.2+dfsg-2ubuntu6.111:6.2+dfsg-2ubuntu6.121:6.2+dfsg-2ubuntu6.131:6.2+dfsg-2ubuntu6.141:6.2+dfsg-2ubuntu6.151:6.2+dfsg-2ubuntu6.161:6.2+dfsg-2ubuntu6.171:6.2+dfsg-2ubuntu6.181:6.2+dfsg-2ubuntu6.191:6.2+dfsg-2ubuntu6.211:6.2+dfsg-2ubuntu6.221:6.2+dfsg-2ubuntu6.231:6.2+dfsg-2ubuntu6.241:6.2+dfsg-2ubuntu6.251:6.2+dfsg-2ubuntu6.261:6.2+dfsg-2ubuntu6.271:6.2+dfsg-2ubuntu6.281:6.2+dfsg-2ubuntu6.291:6.2+dfsg-2ubuntu6.301:6.2+dfsg-2ubuntu6.31
 None known
qemu
Ubuntu:24.04:LTS
 All versions, plus listed versions
1:8.0.4+dfsg-1ubuntu31:8.0.4+dfsg-1ubuntu41:8.0.4+dfsg-1ubuntu51:8.1.3+ds-1ubuntu21:8.2.1+ds-1ubuntu1
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1:8.2.1+ds-1ubuntu81:8.2.1+ds-1ubuntu91:8.2.2+ds-0ubuntu11:8.2.2+ds-0ubuntu1.21:8.2.2+ds-0ubuntu1.41:8.2.2+ds-0ubuntu1.51:8.2.2+ds-0ubuntu1.61:8.2.2+ds-0ubuntu1.71:8.2.2+ds-0ubuntu1.81:8.2.2+ds-0ubuntu1.91:8.2.2+ds-0ubuntu1.101:8.2.2+ds-0ubuntu1.111:8.2.2+ds-0ubuntu1.121:8.2.2+ds-0ubuntu1.131:8.2.2+ds-0ubuntu1.141:8.2.2+ds-0ubuntu1.151:8.2.2+ds-0ubuntu1.161:8.2.2+ds-0ubuntu1.171:8.2.2+ds-0ubuntu1.18
 None known
qemu
Ubuntu:26.10
 All versions, plus listed versions
1:10.2.1+ds-1ubuntu31:10.2.1+ds-1ubuntu61:11.0.3+ds-2ubuntu11:11.0.3+ds-2ubuntu2
 None known
qemu-hwe
Ubuntu:26.10
 All versions, plus listed versions
1:10.2.1+ds-1ubuntu41:10.2.1+ds-1ubuntu71:10.2.1+ds-1ubuntu81:11.0.3+ds-2ubuntu21:11.0.3+ds-2ubuntu4
 None known
qemu
Ubuntu:26.04:LTS
 All versions, plus listed versions
1:10.1.0+ds-5ubuntu21:10.1.0+ds-5ubuntu31:10.1.0+ds-5ubuntu41:10.1.0+ds-5ubuntu51:10.2.1+ds-1ubuntu1
Show 5 moreShow less
1:10.2.1+ds-1ubuntu21:10.2.1+ds-1ubuntu31:10.2.1+ds-1ubuntu3.11:10.2.1+ds-1ubuntu3.21:10.2.1+ds-1ubuntu3.3
 None known
qemu-hwe
Ubuntu:26.04:LTS
 All versions, plus listed versions
1:10.2.1+ds-1ubuntu21:10.2.1+ds-1ubuntu41:10.2.1+ds-1ubuntu4.21:10.2.1+ds-1ubuntu4.31:10.2.1+ds-1ubuntu4.4
 None known
qemu
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
 before 11.1.1-2.1
11.1.1-2.1
qemu
openSUSE:Leap 16.0
From an advisory covering 2 CVEs
 before 10.0.13-160000.2.1
10.0.13-160000.2.1
qemu-linux-user
openSUSE:Leap 16.0
From an advisory covering 2 CVEs
 before 10.0.13-160000.2.1
10.0.13-160000.2.1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubsuominen/CVE-2026-938342026-09-26

History

History
RecordedChangedSources
affected, aliases, referencesOSV
affectedNVD, OSV
factsEUVD
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-93834 is a high vulnerability (CVSS 8.8) in Red Hat Enterprise Linux 10, published September 25, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. Fixed in qemu 10.1.0-2.

References

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This page doesn't list everything

Left out here: 230 versions. The JSON record has them.

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