| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
nitro_enclaves: Use get_user_pages_unlocked() call to handle mmap assert
After commit 5b78ed24e8ec ("mm/pagemap: add mmap_assert_locked()
annotations to find_vma*()"), the call to get_user_pages() will trigger
the mmap assert.
static inline void mmap_assert_locked(struct mm_struct *mm)
{
lockdep_assert_held(&mm->mmap_lock);
VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm);
}
[ 62.521410] kernel BUG at include/linux/mmap_lock.h:156!
...........................................................
[ 62.538938] RIP: 0010:find_vma+0x32/0x80
...........................................................
[ 62.605889] Call Trace:
[ 62.608502] <TASK>
[ 62.610956] ? lock_timer_base+0x61/0x80
[ 62.614106] find_extend_vma+0x19/0x80
[ 62.617195] __get_user_pages+0x9b/0x6a0
[ 62.620356] __gup_longterm_locked+0x42d/0x450
[ 62.623721] ? finish_wait+0x41/0x80
[ 62.626748] ? __kmalloc+0x178/0x2f0
[ 62.629768] ne_set_user_memory_region_ioctl.isra.0+0x225/0x6a0 [nitro_enclaves]
[ 62.635776] ne_enclave_ioctl+0x1cf/0x6d7 [nitro_enclaves]
[ 62.639541] __x64_sys_ioctl+0x82/0xb0
[ 62.642620] do_syscall_64+0x3b/0x90
[ 62.645642] entry_SYSCALL_64_after_hwframe+0x44/0xae
Use get_user_pages_unlocked() when setting the enclave memory regions.
That's a similar pattern as mmap_read_lock() used together with
get_user_pages(). |
| In the Linux kernel, the following vulnerability has been resolved:
fs/mount_setattr: always cleanup mount_kattr
Make sure that finish_mount_kattr() is called after mount_kattr was
succesfully built in both the success and failure case to prevent
leaking any references we took when we built it. We returned early if
path lookup failed thereby risking to leak an additional reference we
took when building mount_kattr when an idmapped mount was requested. |
| In the Linux kernel, the following vulnerability has been resolved:
locking/qrwlock: Fix ordering in queued_write_lock_slowpath()
While this code is executed with the wait_lock held, a reader can
acquire the lock without holding wait_lock. The writer side loops
checking the value with the atomic_cond_read_acquire(), but only truly
acquires the lock when the compare-and-exchange is completed
successfully which isn’t ordered. This exposes the window between the
acquire and the cmpxchg to an A-B-A problem which allows reads
following the lock acquisition to observe values speculatively before
the write lock is truly acquired.
We've seen a problem in epoll where the reader does a xchg while
holding the read lock, but the writer can see a value change out from
under it.
Writer | Reader
--------------------------------------------------------------------------------
ep_scan_ready_list() |
|- write_lock_irq() |
|- queued_write_lock_slowpath() |
|- atomic_cond_read_acquire() |
| read_lock_irqsave(&ep->lock, flags);
--> (observes value before unlock) | chain_epi_lockless()
| | epi->next = xchg(&ep->ovflist, epi);
| | read_unlock_irqrestore(&ep->lock, flags);
| |
| atomic_cmpxchg_relaxed() |
|-- READ_ONCE(ep->ovflist); |
A core can order the read of the ovflist ahead of the
atomic_cmpxchg_relaxed(). Switching the cmpxchg to use acquire
semantics addresses this issue at which point the atomic_cond_read can
be switched to use relaxed semantics.
[peterz: use try_cmpxchg()] |
| Microsoft Local Security Authority Subsystem Service Information Disclosure Vulnerability |
| Microsoft Edge (Chromium-based) Information Disclosure Vulnerability |
| Microsoft ODBC Driver Remote Code Execution Vulnerability |
| Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability |
| Secure Boot Security Feature Bypass Vulnerability |
| Secure Boot Security Feature Bypass Vulnerability |
| Secure Boot Security Feature Bypass Vulnerability |
| Secure Boot Security Feature Bypass Vulnerability |
| Secure Boot Security Feature Bypass Vulnerability |
| BitLocker Security Feature Bypass Vulnerability |
| Secure Boot Security Feature Bypass Vulnerability |
| Microsoft SharePoint Server Information Disclosure Vulnerability |
| Microsoft Bing Search Spoofing Vulnerability |
| Windows Mark of the Web Security Feature Bypass Vulnerability |
| In Apache Airflow versions prior to 2.4.2, there was an open redirect in the webserver's `/confirm` endpoint. |
| "IBM MQ Appliance 9.2 CD, 9.2 LTS, 9.3 CD, and LTS 9.3 does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system. IBM X-Force ID: 235532." |
| Due to improper restrictions on XML entities multiple vulnerabilities exist in the command line interface of ArubaOS. A successful exploit could allow an authenticated attacker to retrieve files from the local system or cause the application to consume system resources, resulting in a denial of service condition.
|
