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bind:CVE-2022-49562

Количество 8

Количество 8

ubuntu логотип

CVE-2022-49562

12 месяцев назад

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS3: 5.5
EPSS: Низкий
redhat логотип

CVE-2022-49562

12 месяцев назад

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS3: 5.5
EPSS: Низкий
nvd логотип

CVE-2022-49562

12 месяцев назад

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS3: 5.5
EPSS: Низкий
msrc логотип

CVE-2022-49562

4 месяца назад

KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits

EPSS: Низкий
debian логотип

CVE-2022-49562

12 месяцев назад

In the Linux kernel, the following vulnerability has been resolved: K ...

CVSS3: 5.5
EPSS: Низкий
github логотип

GHSA-xpvw-h2w8-vrf9

4 месяца назад

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS3: 5.5
EPSS: Низкий
suse-cvrf логотип

SUSE-SU-2025:1027-1

11 месяцев назад

Security update for the Linux Kernel

EPSS: Низкий
suse-cvrf логотип

SUSE-SU-2025:1241-1

10 месяцев назад

Security update for the Linux Kernel

EPSS: Низкий

Уязвимостей на страницу

Уязвимость
CVSS
EPSS
Опубликовано
ubuntu логотип
CVE-2022-49562

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS3: 5.5
0%
Низкий
12 месяцев назад
redhat логотип
CVE-2022-49562

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS3: 5.5
0%
Низкий
12 месяцев назад
nvd логотип
CVE-2022-49562

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS3: 5.5
0%
Низкий
12 месяцев назад
msrc логотип
CVE-2022-49562

KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits

0%
Низкий
4 месяца назад
debian логотип
CVE-2022-49562

In the Linux kernel, the following vulnerability has been resolved: K ...

CVSS3: 5.5
0%
Низкий
12 месяцев назад
github логотип
GHSA-xpvw-h2w8-vrf9

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS3: 5.5
0%
Низкий
4 месяца назад
suse-cvrf логотип
SUSE-SU-2025:1027-1

Security update for the Linux Kernel

11 месяцев назад
suse-cvrf логотип
SUSE-SU-2025:1241-1

Security update for the Linux Kernel

10 месяцев назад

Уязвимостей на страницу