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18 vulnerabilities found for virtualization_host by redhat
CVE-2023-3758 (GCVE-0-2023-3758)
Vulnerability from nvd
Published
2024-04-18 19:06
Modified
2025-11-06 22:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Summary
A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This may lead to improper authorization issues, granting or denying access to resources inappropriately.
References
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Version: 0 ≤ |
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CVE-2023-6536 (GCVE-0-2023-6536)
Vulnerability from nvd
Published
2024-02-07 21:05
Modified
2025-11-06 21:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.
References
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Impacted products
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected: 0:4.18.0-513.18.1.rt7.320.el8_9 < * cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv |
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CVE-2023-6535 (GCVE-0-2023-6535)
Vulnerability from nvd
Published
2024-02-07 21:04
Modified
2025-11-06 21:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.
References
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Impacted products
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| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected: 0:4.18.0-513.18.1.rt7.320.el8_9 < * cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv |
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CVE-2023-6356 (GCVE-0-2023-6356)
Vulnerability from nvd
Published
2024-02-07 21:04
Modified
2025-11-06 21:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver and causing kernel panic and a denial of service.
References
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Impacted products
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| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected: 0:4.18.0-513.18.1.rt7.320.el8_9 < * cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv |
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CVE-2023-4911 (GCVE-0-2023-4911)
Vulnerability from nvd
Published
2023-10-03 17:25
Modified
2025-11-20 07:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-122 - Heap-based Buffer Overflow
Summary
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
References
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Impacted products
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Version: 2.34 < 2.39 |
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"value": "For customers who cannot update immediately and do not have Secure Boot feature enabled, the issue can be mitigated using the provided SystemTap script with the following steps. When enabled, any setuid program invoked with GLIBC_TUNABLES in the environment will be terminated immediately. To invoke the setuid program, users will then have to unset or clear the GLIBC_TUNABLES envvar, e.g. `GLIBC_TUNABLES= sudo` . \n\nNote that these mitigation steps will need to be repeated if the system is rebooted.\n\n1) Install required systemtap packages and dependencies as per - https://access.redhat.com/solutions/5441\n\n\n2) Create the following systemtap script, and name it stap_block_suid_tunables.stp:\n ~~~\nfunction has_tunable_string:long()\n{\n name = \"GLIBC_TUNABLES\"\n\n mm = @task(task_current())-\u003emm;\n if (mm)\n {\n env_start = @mm(mm)-\u003eenv_start;\n env_end = @mm(mm)-\u003eenv_end;\n\n if (env_start != 0 \u0026\u0026 env_end != 0)\n while (env_end \u003e env_start)\n {\n cur = user_string(env_start, \"\");\n env_name = tokenize(cur, \"=\");\n \n if (env_name == name \u0026\u0026 tokenize(\"\", \"\") != \"\")\n return 1;\n env_start += strlen (cur) + 1\n }\n }\n\n return 0;\n}\n\nprobe process(\"/lib*/ld*.so*\").function(\"__tunables_init\")\n{\n atsecure = 0;\n /* Skip processing if we can\u0027t read __libc_enable_secure, e.g. core dump\n handler (systemd-cgroups-agent and systemd-coredump). */\n try { atsecure = @var(\"__libc_enable_secure\"); }\n catch { printk (4, sprintf (\"CVE-2023-4911: Skipped check: %s (%d)\", execname(), pid())); }\n if (atsecure \u0026\u0026 has_tunable_string ())\n raise (9);\n}\n~~~\n\n3) Load the systemtap module into the running kernel:\n ~~~\n stap -g -F -m stap_block_suid_tunables stap_block_suid_tunables.stp\n ~~~\n\n4) Ensure the module is loaded:\n ~~~\n lsmod | grep -i stap_block_suid_tunables\nstap_block_suid_tunables 249856 0\n~~~\n\n5) Once the glibc package is updated to the version containing the fix, the systemtap generated kernel module can be removed by running:\n ~~~\n rmmod stap_block_suid_tunables\n ~~~\n\nIf Secure Boot is enabled on a system, the SystemTap module must be signed. An external compiling server can be used to sign the generated kernel module with a key enrolled into the kernel\u0027s keyring or starting with SystemTap 4.7 you can sign a module without a compile server. See further information here - https://www.redhat.com/sysadmin/secure-boot-systemtap"
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CVE-2021-3669 (GCVE-0-2021-3669)
Vulnerability from nvd
Published
2022-08-26 15:25
Modified
2025-11-03 21:44
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-400 - - Uncontrolled Resource Consumption
Summary
A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS.
References
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CVE-2022-0847 (GCVE-0-2022-0847)
Vulnerability from nvd
Published
2022-03-07 00:00
Modified
2025-10-21 23:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-665 - ->CWE-281
Summary
A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.
References
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CVE-2021-3560 (GCVE-0-2021-3560)
Vulnerability from nvd
Published
2022-02-16 00:00
Modified
2025-10-21 23:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
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CVE-2021-3621 (GCVE-0-2021-3621)
Vulnerability from nvd
Published
2021-12-23 00:00
Modified
2025-11-03 20:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
References
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CVE-2023-3758 (GCVE-0-2023-3758)
Vulnerability from cvelistv5
Published
2024-04-18 19:06
Modified
2025-11-06 22:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Summary
A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This may lead to improper authorization issues, granting or denying access to resources inappropriately.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Version: 0 ≤ |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2023-6536 (GCVE-0-2023-6536)
Vulnerability from cvelistv5
Published
2024-02-07 21:05
Modified
2025-11-06 21:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected: 0:4.18.0-513.18.1.rt7.320.el8_9 < * cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2023-6535 (GCVE-0-2023-6535)
Vulnerability from cvelistv5
Published
2024-02-07 21:04
Modified
2025-11-06 21:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.
References
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Impacted products
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| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected: 0:4.18.0-513.18.1.rt7.320.el8_9 < * cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv |
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CVE-2023-6356 (GCVE-0-2023-6356)
Vulnerability from cvelistv5
Published
2024-02-07 21:04
Modified
2025-11-06 21:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver and causing kernel panic and a denial of service.
References
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Impacted products
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| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected: 0:4.18.0-513.18.1.rt7.320.el8_9 < * cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv |
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CVE-2023-4911 (GCVE-0-2023-4911)
Vulnerability from cvelistv5
Published
2023-10-03 17:25
Modified
2025-11-20 07:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-122 - Heap-based Buffer Overflow
Summary
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
References
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Impacted products
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Version: 2.34 < 2.39 |
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"value": "For customers who cannot update immediately and do not have Secure Boot feature enabled, the issue can be mitigated using the provided SystemTap script with the following steps. When enabled, any setuid program invoked with GLIBC_TUNABLES in the environment will be terminated immediately. To invoke the setuid program, users will then have to unset or clear the GLIBC_TUNABLES envvar, e.g. `GLIBC_TUNABLES= sudo` . \n\nNote that these mitigation steps will need to be repeated if the system is rebooted.\n\n1) Install required systemtap packages and dependencies as per - https://access.redhat.com/solutions/5441\n\n\n2) Create the following systemtap script, and name it stap_block_suid_tunables.stp:\n ~~~\nfunction has_tunable_string:long()\n{\n name = \"GLIBC_TUNABLES\"\n\n mm = @task(task_current())-\u003emm;\n if (mm)\n {\n env_start = @mm(mm)-\u003eenv_start;\n env_end = @mm(mm)-\u003eenv_end;\n\n if (env_start != 0 \u0026\u0026 env_end != 0)\n while (env_end \u003e env_start)\n {\n cur = user_string(env_start, \"\");\n env_name = tokenize(cur, \"=\");\n \n if (env_name == name \u0026\u0026 tokenize(\"\", \"\") != \"\")\n return 1;\n env_start += strlen (cur) + 1\n }\n }\n\n return 0;\n}\n\nprobe process(\"/lib*/ld*.so*\").function(\"__tunables_init\")\n{\n atsecure = 0;\n /* Skip processing if we can\u0027t read __libc_enable_secure, e.g. core dump\n handler (systemd-cgroups-agent and systemd-coredump). */\n try { atsecure = @var(\"__libc_enable_secure\"); }\n catch { printk (4, sprintf (\"CVE-2023-4911: Skipped check: %s (%d)\", execname(), pid())); }\n if (atsecure \u0026\u0026 has_tunable_string ())\n raise (9);\n}\n~~~\n\n3) Load the systemtap module into the running kernel:\n ~~~\n stap -g -F -m stap_block_suid_tunables stap_block_suid_tunables.stp\n ~~~\n\n4) Ensure the module is loaded:\n ~~~\n lsmod | grep -i stap_block_suid_tunables\nstap_block_suid_tunables 249856 0\n~~~\n\n5) Once the glibc package is updated to the version containing the fix, the systemtap generated kernel module can be removed by running:\n ~~~\n rmmod stap_block_suid_tunables\n ~~~\n\nIf Secure Boot is enabled on a system, the SystemTap module must be signed. An external compiling server can be used to sign the generated kernel module with a key enrolled into the kernel\u0027s keyring or starting with SystemTap 4.7 you can sign a module without a compile server. See further information here - https://www.redhat.com/sysadmin/secure-boot-systemtap"
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CVE-2021-3669 (GCVE-0-2021-3669)
Vulnerability from cvelistv5
Published
2022-08-26 15:25
Modified
2025-11-03 21:44
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-400 - - Uncontrolled Resource Consumption
Summary
A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2022-0847 (GCVE-0-2022-0847)
Vulnerability from cvelistv5
Published
2022-03-07 00:00
Modified
2025-10-21 23:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-665 - ->CWE-281
Summary
A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.
References
| URL | Tags | |||||||||||||||||||||||||||||||
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CVE-2021-3560 (GCVE-0-2021-3560)
Vulnerability from cvelistv5
Published
2022-02-16 00:00
Modified
2025-10-21 23:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
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CVE-2021-3621 (GCVE-0-2021-3621)
Vulnerability from cvelistv5
Published
2021-12-23 00:00
Modified
2025-11-03 20:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
References
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