| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
iommu/amd/pgtbl: Fix possible race while increase page table level
The AMD IOMMU host page table implementation supports dynamic page table levels
(up to 6 levels), starting with a 3-level configuration that expands based on
IOVA address. The kernel maintains a root pointer and current page table level
to enable proper page table walks in alloc_pte()/fetch_pte() operations.
The IOMMU IOVA allocator initially starts with 32-bit address and onces its
exhuasted it switches to 64-bit address (max address is determined based
on IOMMU and device DMA capability). To support larger IOVA, AMD IOMMU
driver increases page table level.
But in unmap path (iommu_v1_unmap_pages()), fetch_pte() reads
pgtable->[root/mode] without lock. So its possible that in exteme corner case,
when increase_address_space() is updating pgtable->[root/mode], fetch_pte()
reads wrong page table level (pgtable->mode). It does compare the value with
level encoded in page table and returns NULL. This will result is
iommu_unmap ops to fail and upper layer may retry/log WARN_ON.
CPU 0 CPU 1
------ ------
map pages unmap pages
alloc_pte() -> increase_address_space() iommu_v1_unmap_pages() -> fetch_pte()
pgtable->root = pte (new root value)
READ pgtable->[mode/root]
Reads new root, old mode
Updates mode (pgtable->mode += 1)
Since Page table level updates are infrequent and already synchronized with a
spinlock, implement seqcount to enable lock-free read operations on the read path. |
| Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability |
| In the Linux kernel, the following vulnerability has been resolved:
gpiolib: fix race condition for gdev->srcu
If two drivers were calling gpiochip_add_data_with_key(), one may be
traversing the srcu-protected list in gpio_name_to_desc(), meanwhile
other has just added its gdev in gpiodev_add_to_list_unlocked().
This creates a non-mutexed and non-protected timeframe, when one
instance is dereferencing and using &gdev->srcu, before the other
has initialized it, resulting in crash:
[ 4.935481] Unable to handle kernel paging request at virtual address ffff800272bcc000
[ 4.943396] Mem abort info:
[ 4.943400] ESR = 0x0000000096000005
[ 4.943403] EC = 0x25: DABT (current EL), IL = 32 bits
[ 4.943407] SET = 0, FnV = 0
[ 4.943410] EA = 0, S1PTW = 0
[ 4.943413] FSC = 0x05: level 1 translation fault
[ 4.943416] Data abort info:
[ 4.943418] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
[ 4.946220] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 4.955261] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 4.955268] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000038e6c000
[ 4.961449] [ffff800272bcc000] pgd=0000000000000000
[ 4.969203] , p4d=1000000039739003
[ 4.979730] , pud=0000000000000000
[ 4.980210] phandle (CPU): 0x0000005e, phandle (BE): 0x5e000000 for node "reset"
[ 4.991736] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
...
[ 5.121359] pc : __srcu_read_lock+0x44/0x98
[ 5.131091] lr : gpio_name_to_desc+0x60/0x1a0
[ 5.153671] sp : ffff8000833bb430
[ 5.298440]
[ 5.298443] Call trace:
[ 5.298445] __srcu_read_lock+0x44/0x98
[ 5.309484] gpio_name_to_desc+0x60/0x1a0
[ 5.320692] gpiochip_add_data_with_key+0x488/0xf00
5.946419] ---[ end trace 0000000000000000 ]---
Move initialization code for gdev fields before it is added to
gpio_devices, with adjacent initialization code.
Adjust goto statements to reflect modified order of operations
[Bartosz: fixed a build issue, removed stray newline] |
| In the Linux kernel, the following vulnerability has been resolved:
accel/ivpu: Fix race condition when unbinding BOs
Fix 'Memory manager not clean during takedown' warning that occurs
when ivpu_gem_bo_free() removes the BO from the BOs list before it
gets unmapped. Then file_priv_unbind() triggers a warning in
drm_mm_takedown() during context teardown.
Protect the unmapping sequence with bo_list_lock to ensure the BO is
always fully unmapped when removed from the list. This ensures the BO
is either fully unmapped at context teardown time or present on the
list and unmapped by file_priv_unbind(). |
| Improper privilege management in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Universal Print Management Service allows an authorized attacker to elevate privileges locally. |
| A race condition existed in nsHttpTransaction that could have been exploited to cause memory corruption, potentially leading to an exploitable condition. This vulnerability affects Firefox < 137.0.2. |
| IBM Storage Virtualize 8.5, 8.6, and 8.7 products could allow a user to escalate their privileges to that of another user logging in at the same time due to a race condition in the login function. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an unauthorized attacker to elevate privileges locally. |
| Null pointer dereference in Windows NTFS allows an authorized attacker to elevate privileges locally. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Teams allows an authorized attacker to elevate privileges locally. |
| Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally. |
| In multiple functions of DevicePolicyManagerService.java, there is a possible way to install unauthorized applications into a newly created work profile due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Hyper-V allows an authorized attacker to elevate privileges locally. |
| In multiple functions of AppOpsControllerImpl.java, there is a possible way to record audio without displaying the privacy indicator due to a race condition. This could lead to local escalation of privilege with User execution privileges needed. User interaction is needed for exploitation. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB allows an unauthorized attacker to execute code over a network. |
| Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DirectX allows an authorized attacker to elevate privileges locally. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to execute code locally. |
