| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
sched/isolation: Defer freeing of cpumask memblock memory to initcall
When testing a linux-next kernel with commit 59bd1d914bb5 ("memblock:
warn when freeing reserved memory before memory map is initialized"),
the following warning was hit when there was a "nohz_full" kernel boot
parameter.
Cannot free reserved memory because of deferred initialization of the memory map
WARNING: mm/memblock.c:904 at __free_reserved_area+0xde/0xf0, CPU#0: swapper/0/0
:
Call Trace:
<TASK>
memblock_phys_free+0xcb/0x100
housekeeping_init+0x14c/0x170
start_kernel+0x207/0x450
x86_64_start_reservations+0x24/0x30
x86_64_start_kernel+0xda/0xe0
common_startup_64+0x13e/0x141
</TASK>
IOW, we shouldn't free memblock allocated memory so early
in the boot process when memory map isn't fully initialized in
deferred_init_memmap().
Fix it by saving the housekeeping cpumask memblock memory to be
freed into a llist free list in housekeeping_init() and add a new
housekeeping_late_init() helper to defer the actual freeing of memblock
memory to when initcall's are being processed. The cpumask memblock
memory is treated as a llist_node with the size of a "long" type which
is also smallest cpumask size that can be allocated.
The non-atomic version of the llist APIs are used as there is no
contention.
This commit depends on the presence of commit 7c2eee9c1367 ("memblock:
don't touch memblock arrays when memblock_free() is called late")
to prevent a KASAN UAF bug report [1].
[1] https://lore.kernel.org/lkml/20260505051821.1107133-1-longman@redhat.com/ |
| In the Linux kernel, the following vulnerability has been resolved:
powerpc/xive: propagate IPI init errors to prevent use-after-free
When xive_init_ipis() fails (e.g. irq_domain_alloc_irqs() fails),
the error path frees the global xive_ipis array. However,
xive_smp_probe() previously ignored this failure and proceeded to
call xive_setup_cpu_ipi(), which dereferences the already-freed
xive_ipis pointer -- a use-after-free.
Now that xive_smp_probe() returns int (previous patch), propagate
the error from xive_init_ipis() and xive_setup_cpu_ipi() through
xive_smp_probe(). Check the return value in both pnv_smp_probe()
and pSeries_smp_probe() so that IPI setup is aborted cleanly on
failure, avoiding the use-after-free. |
| In the Linux kernel, the following vulnerability has been resolved:
RDMA/bnxt_re: Validate udata before executing commands
The destroy callbacks currently zero the udata output after tearing down
driver resources. If the userspace access fails, uverbs preserves the
uobject and allows the destroy callback to run again, even though the
driver resource has already been freed.
Call ib_no_udata_io() before teardown so udata failures are detected
while the resource is still intact, then return success after teardown
completes.
As part of this change, move ib_respond_empty_udata() to the start of
the create and modify flows. While this is not strictly required for
general create flows, as the core layer unwinds uobjects on failure, it
is necessary for create AH. In _rdma_create_ah(), the HW object is
otherwise leaked. |
| Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally. |
| Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally. |
| Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine |
| Concurrent execution using shared resource with improper synchronization ('race condition') in DNS Server allows an unauthorized attacker to execute code over a network. |
| Use after free in Windows Embedded Mode Service allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Work Folder Service allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally. |
| Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges over a network. |
| Double free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally. |
| Use After Free in GitHub repository vim/vim prior to 9.0.0530. |
| Use After Free in GitHub repository vim/vim prior to 9.0.0389. |
| Use After Free in GitHub repository vim/vim prior to 9.0.0322. |
| Use After Free in GitHub repository vim/vim prior to 9.0.0789. |
