CVE-2023-52935
published 2025-03-27CVE-2023-52935: In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: fix ->anon_vma race If an ->anon_vma is attached to the VMA…
PriorityP340high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.18%
7.9th percentile
In the Linux kernel, the following vulnerability has been resolved:
mm/khugepaged: fix ->anon_vma race
If an ->anon_vma is attached to the VMA, collapse_and_free_pmd() requires
it to be locked.
Page table traversal is allowed under any one of the mmap lock, the
anon_vma lock (if the VMA is associated with an anon_vma), and the
mapping lock (if the VMA is associated with a mapping); and so to be
able to remove page tables, we must hold all three of them.
retract_page_tables() bails out if an ->anon_vma is attached, but does
this check before holding the mmap lock (as the comment above the check
explains).
If we racily merged an existing ->anon_vma (shared with a child
process) from a neighboring VMA, subsequent rmap traversals on pages
belonging to the child will be able to see the page tables that we are
concurrently removing while assuming that nothing else can access them.
Repeat the ->anon_vma check once we hold the mmap lock to ensure that
there really is no concurrent page table access.
Hitting this bug causes a lockdep warning in collapse_and_free_pmd(),
in the line "lockdep_assert_held_write(&vma->anon_vma->root->rwsem)".
It can also lead to use-after-free access.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.11-1 (bookworm) | linux 6.1.11-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= f3f0e1d2150b2b99da2cbdfaad000089efe9bf30 < 352fbf61ce776fef18dca6a68680a6cd943dac95 | 352fbf61ce776fef18dca6a68680a6cd943dac95 |
| linux | linux | >= f3f0e1d2150b2b99da2cbdfaad000089efe9bf30 < cee956ab1efbd858b4ca61c8b474af5aa24b29a6 | cee956ab1efbd858b4ca61c8b474af5aa24b29a6 |
| linux | linux | >= f3f0e1d2150b2b99da2cbdfaad000089efe9bf30 < abdf3c33918185c3e8ffeb09ed3e334b3d7df47c | abdf3c33918185c3e8ffeb09ed3e334b3d7df47c |
| linux | linux | >= f3f0e1d2150b2b99da2cbdfaad000089efe9bf30 < acb08187b5a83cdb9ac4112fae9e18cf983b0128 | acb08187b5a83cdb9ac4112fae9e18cf983b0128 |
| linux | linux | >= f3f0e1d2150b2b99da2cbdfaad000089efe9bf30 < 023f47a8250c6bdb4aebe744db4bf7f73414028b | 023f47a8250c6bdb4aebe744db4bf7f73414028b |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.244-1 | 5.10.244-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 5.15.0-163.173 | 5.15.0-163.173 |
| linux | linux_kernel | >= 4.8 < 5.4.299 | 5.4.299 |
| linux | linux_kernel | >= 5.11 < 5.15.192 | 5.15.192 |
| linux | linux_kernel | >= 5.16 < 6.1.11 | 6.1.11 |
| linux | linux_kernel | >= 5.5 < 5.10.243 | 5.10.243 |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
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
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu5.5MEDIUM
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CVE-2023-52935: In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: fix ->anon_vma race If an ->anon_vma is attached to the VMA, collap
osv·2025-03-27·CVSS 7.8
CVE-2023-52935 [HIGH] CVE-2023-52935: In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: fix ->anon_vma race If an ->anon_vma is attached to the VMA, collap
In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: fix ->anon_vma race If an ->anon_vma is attached to the VMA, collapse_and_free_pmd() requires it to be locked. Page table traversal is allowed under any one of the mmap lock, the anon_vma lock (if the VMA is associated with an anon_vma), and the mapping lock (if the VMA is associated with a mapping); and so to be able to remove page tables, we must hold all three of them. retract_page_tables() bails out if an ->anon_vma is attached, but does this check before holding the mmap lock (as the comment above the check explains). If we racily merged an existing ->anon_vma (shared with a child process) from a neighboring VMA, subsequent rmap traversals on pages belonging to the child will be able to see the page tab
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GHSA-whcm-px77-62x7: In the Linux kernel, the following vulnerability has been resolved:
mm/khugepaged: fix ->anon_vma race
If an ->anon_vma is attached to the VMA, coll
ghsa_unreviewed·2025-03-27
CVE-2023-52935 [HIGH] CWE-416 GHSA-whcm-px77-62x7: In the Linux kernel, the following vulnerability has been resolved:
mm/khugepaged: fix ->anon_vma race
If an ->anon_vma is attached to the VMA, coll
In the Linux kernel, the following vulnerability has been resolved:
mm/khugepaged: fix ->anon_vma race
If an ->anon_vma is attached to the VMA, collapse_and_free_pmd() requires
it to be locked.
Page table traversal is allowed under any one of the mmap lock, the
anon_vma lock (if the VMA is associated with an anon_vma), and the
mapping lock (if the VMA is associated with a mapping); and so to be
able to remove page tables, we must hold all three of them.
retract_page_tables() bails out if an ->anon_vma is attached, but does
this check before holding the mmap lock (as the comment above the check
explains).
If we racily merged an existing ->anon_vma (shared with a child
process) from a neighboring VMA, subsequent rmap traversals on pages
belonging to the child will be able to see the page
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between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
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Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
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- DRBD Distributed Replicated Block Device drivers;
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Summary: Several security issues were fixed in the Linux kernel.
Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 archit
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- ACPI drivers;
- ATM drivers;
- DRBD Distributed Replicated Block Device drivers;
- Bus devices;
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Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
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Summary: Several security issues were fixed in the Linux kernel.
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- ACPI drivers;
- ATM drivers;
- DRBD Distributed Replicated Block Device drivers;
- Bus devices;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- Hardware crypto device drivers;
- Device frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- ARM SCMI messag
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vendor_ubuntu·2025-12-04
CVE-2024-53068 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- ACPI drivers;
- ATM drivers;
- DRBD Distributed Replicated Block Device drivers;
- Bus devices;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- Hardware crypto device drivers;
- Device frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- ARM SCMI message proto
Red Hat
kernel: mm/khugepaged: fix ->anon_vma race
vendor_redhat·2025-03-27·CVSS 7.8
CVE-2023-52935 [HIGH] kernel: mm/khugepaged: fix ->anon_vma race
kernel: mm/khugepaged: fix ->anon_vma race
In the Linux kernel, the following vulnerability has been resolved:
mm/khugepaged: fix ->anon_vma race
If an ->anon_vma is attached to the VMA, collapse_and_free_pmd() requires
it to be locked.
Page table traversal is allowed under any one of the mmap lock, the
anon_vma lock (if the VMA is associated with an anon_vma), and the
mapping lock (if the VMA is associated with a mapping); and so to be
able to remove page tables, we must hold all three of them.
retract_page_tables() bails out if an ->anon_vma is attached, but does
this check before holding the mmap lock (as the comment above the check
explains).
If we racily merged an existing ->anon_vma (shared with a child
process) from a neighboring VMA, subsequent rmap traversals on pages
belonging t
Microsoft
mm/khugepaged: fix ->anon_vma race
vendor_msrc·2025-03-11·CVSS 7.8
CVE-2023-52935 [HIGH] CWE-416 mm/khugepaged: fix ->anon_vma race
mm/khugepaged: fix ->anon_vma race
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com/en-us/
Debian
CVE-2023-52935: linux - In the Linux kernel, the following vulnerability has been resolved: mm/khugepag...
vendor_debian·2023·CVSS 7.8
CVE-2023-52935 [HIGH] CVE-2023-52935: linux - In the Linux kernel, the following vulnerability has been resolved: mm/khugepag...
In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: fix ->anon_vma race If an ->anon_vma is attached to the VMA, collapse_and_free_pmd() requires it to be locked. Page table traversal is allowed under any one of the mmap lock, the anon_vma lock (if the VMA is associated with an anon_vma), and the mapping lock (if the VMA is associated with a mapping); and so to be able to remove page tables, we must hold all three of them. retract_page_tables() bails out if an ->anon_vma is attached, but does this check before holding the mmap lock (as the comment above the check explains). If we racily merged an existing ->anon_vma (shared with a child process) from a neighboring VMA, subsequent rmap traversals on pages belonging to the child will be able to see the page tab
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/023f47a8250c6bdb4aebe744db4bf7f73414028bhttps://git.kernel.org/stable/c/352fbf61ce776fef18dca6a68680a6cd943dac95https://git.kernel.org/stable/c/abdf3c33918185c3e8ffeb09ed3e334b3d7df47chttps://git.kernel.org/stable/c/acb08187b5a83cdb9ac4112fae9e18cf983b0128https://git.kernel.org/stable/c/cee956ab1efbd858b4ca61c8b474af5aa24b29a6https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
2025-03-27
Published