| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix overflow of jump offset in constant blinding
bpf_jit_blind_insn() rewrites 'if rX op imm goto off' into:
AX = imm ^ rnd
AX ^= rnd
if rX op AX goto off
and subtracts 2 from off when the jump is backward. off is s16, so
-32767 and -32768 wrap and the jump goes 32767 insns forward, past the
end of the prog. The jump is inside the patch, hence bpf_adj_branches()
doesn't check it. The kernel crashes when such prog runs with
bpf_jit_harden=2.
Return -ERANGE in such case. bpf_jit_blind_constants() fails the same
way when blinding of other insns moves a jump out of range. |
| In the Linux kernel, the following vulnerability has been resolved:
mm/slab: do not wake up kswapd in __kfree_rcu_sheaf()
Since kfree_rcu() can be called under pi_lock (a raw spinlock in the
scheduler), kfree_rcu() itself should never allocate memory with
__GFP_KSWAPD_RECLAIM as waking up kswapd ends up acquiring pi_lock,
which leads to a deadlock.
Reproducing the issue even intentionally was not straightforward.
The set_cpus_allowed_force() path that is called under pi_lock is
exercised very rarely, and competing tasks that allocate memory will
most likely wake kswapd up.
Therefore the existence of the deadlock was verified with a modified
kernel that has a lockdep map for waking up kswapd:
======================================================
WARNING: possible circular locking dependency detected
7.2.0-rc1-slab-for-next+ #10 Not tainted
------------------------------------------------------
git/6660 is trying to acquire lock:
ffff8e524533c550 (&p->pi_lock){-.-.}-{2:2}, at: _raw_spin_lock_irqsave+0x12/0x20
but task is already holding lock:
ffff8e57bffff1a0 (&pgdat->kswapd_wait){....}-{3:3}, at: _raw_spin_lock_irqsave+0x12/0x20
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&pgdat->kswapd_wait){....}-{3:3}:
__lock_acquire+0x5a4/0xc50
lock_acquire.part.0+0xb7/0x240
lock_acquire+0x70/0x170
__raw_spin_lock_irqsave+0x44/0x80
_raw_spin_lock_irqsave+0x12/0x20
__wake_up_common_lock+0x31/0xa0
__wake_up+0x20/0x40
kswapd_wakeup_wake+0x7e/0x110
wakeup_kswapd+0x295/0x320
wake_all_kswapds+0xac/0x1a0
__alloc_pages_slowpath.constprop.0+0x282/0xf80
__alloc_frozen_pages_noprof+0x32a/0x360
alloc_slab_page+0x2e/0x160
allocate_slab+0x82/0x420
new_slab+0x52/0xb0
refill_objects+0x13d/0x190
refill_sheaf+0x5d/0xd0
__pcs_replace_empty_main+0x230/0xb10
[...]
-> #1 (kswapd_wakeup){-.-.}-{0:0}:
__lock_acquire+0x5a4/0xc50
lock_sync.part.0+0x75/0x100
lock_sync+0x36/0x70
might_wakeup_kswapd+0x61/0xa0
__kfree_rcu_sheaf+0x33/0xd90
kvfree_call_rcu+0x1d4/0x3b0
set_cpus_allowed_force+0x163/0x220
cpuset_cpus_allowed_fallback+0x18b/0x240
select_fallback_rq+0x1e6/0x250
[...]
-> #0 (&p->pi_lock){-.-.}-{2:2}:
check_prev_add+0xe6/0xe00
validate_chain+0x51e/0x6e0
__lock_acquire+0x5a4/0xc50
lock_acquire.part.0+0xb7/0x240
lock_acquire+0x70/0x170
__raw_spin_lock_irqsave+0x44/0x80
_raw_spin_lock_irqsave+0x12/0x20
try_to_wake_up+0x77/0xa90
default_wake_function+0x27/0x60
autoremove_wake_function+0x23/0xb0
__wake_up_common+0xb8/0x170
__wake_up_common_lock+0x51/0xa0
__wake_up+0x20/0x40
kswapd_wakeup_wake+0x7e/0x110
wakeup_kswapd+0x295/0x320
wake_all_kswapds+0xac/0x1a0
__alloc_pages_slowpath.constprop.0+0x282/0xf80
__alloc_frozen_pages_noprof+0x32a/0x360
alloc_slab_page+0x2e/0x160
allocate_slab+0x82/0x420
new_slab+0x52/0xb0
refill_objects+0x13d/0x190
refill_sheaf+0x5d/0xd0
__pcs_replace_empty_main+0x230/0xb10
[...]
other info that might help us debug this:
Chain exists of:
&p->pi_lock --> kswapd_wakeup --> &pgdat->kswapd_wait
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&pgdat->kswapd_wait);
lock(kswapd_wakeup);
lock(&pgdat->kswapd_wait);
lock(&p->pi_lock);
*** DEADLOCK ***
3 locks held by git/6660:
#0: ffff8e519f0e9e20 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: lookup_slow+0x2d/0x60
#1: ffffffff8a31c460 (kswapd_wakeup){-.-.}-
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: validate TX status rate metadata
minstrel_ht_tx_status() converts the HT/VHT rate reported in a TX status
into a group and rate index and uses those to index the minstrel_ht rate
tables. The existing validation only checked that an entry was present
and had tries recorded; it did not check that the reported MCS, spatial
stream count and bandwidth are representable by the tables, so malformed
metadata passed to minstrel_ht_get_stats() or
minstrel_ht_ri_get_stats() could be used as an out-of-bounds index.
Validate the rate metadata in the common TX status path instead of only
in minstrel_ht, since the values are used by more than rate control.
The legacy ieee80211_tx_rate array and the rate_info based entries are
sanitized in ieee80211_tx_status_ext() and ieee80211_tx_rate_update()
before any consumer runs: an entry that does not describe a valid rate
for its encoding is dropped. minstrel_ht keeps the checks that depend
on its own tables, i.e. the supported number of spatial streams, the MCS
group size and the supported bandwidths.
This does not take away the driver's responsibility to report sane
values, it only prevents a single bad report from corrupting mac80211
state. No WARN_ON() is added: with panic_on_warn a driver bug would
otherwise turn into a denial of service. |
| In the Linux kernel, the following vulnerability has been resolved:
wifi: ath9k: reject short WMI command responses
ath9k_wmi_rsp_callback() removes the validated WMI header and copies
the number of bytes expected by the waiting command into its response
buffer. A device response shorter than that expectation can therefore
be read beyond the skb payload.
Record -EMSGSIZE for a short response, complete the waiter, and return
the stored status from the command path. This also prevents callers from
consuming stale response bytes as a successful reply. |
| Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
| Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network. |
| Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally. |
| An issue was discovered in HAProxy before 3.3.6. The HTTP/3 parser does not check that the received body length matches a previously announced content-length when the stream is closed via a frame with an empty payload. This can cause desynchronization issues with the backend server and could be used for request smuggling. The earliest affected version is 2.6. |
| In the Linux kernel, the following vulnerability has been resolved:
blk-cgroup: save IRQ state in blkg_tryget_closest()
bio_set_dev() associates the bio with a blkg through bio_associate_blkg().
If the blkg lookup misses, blkg_tryget_closest() takes q->queue_lock with
spin_lock_irq() and releases it with spin_unlock_irq(), which
unconditionally enables local interrupts.
Callers may call bio_set_dev() with interrupts already disabled, e.g.
dm-thin's pool_map() does so while holding pool->lock taken with
spin_lock_irq(). The nested spin_unlock_irq() then enables interrupts
while pool->lock is still held, so an I/O completion softirq can run on
the same CPU, re-acquire pool->lock (thin_endio(), or overwrite_endio()
-> complete_mapping_preparation()) and deadlock. lockdep reports this
as inconsistent SOFTIRQ-ON-W to IN-SOFTIRQ-W usage.
Commit 3a762de55b4e ("block: save irq state in blkg_lookup_create()")
fixed the same problem while the lock lived in blkg_lookup_create(), but
commit 9327a865e395 ("blk-cgroup: don't nest queue_lock under rcu in
blkg_lookup_create()") moved the locking into blkg_tryget_closest() and
reverted it to spin_lock_irq().
Save and restore the caller's IRQ state instead. |
| Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally. |
| Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to disclose information over a network. |
| Missing Authorization vulnerability in WPGraphQL WPGraphQL wp-graphql allows Retrieve Embedded Sensitive Data.This issue affects WPGraphQL: from n/a through 2.23.1. |
| The Animated Number Counters plugin for WordPress is vulnerable to generic SQL Injection via the 'counterid' parameter in all versions up to, and including, 3.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with editor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This is a second-order SQL injection: the write path correctly uses $wpdb->prepare(), but that protection is not carried forward to the read path, where the retrieved value is concatenated unsanitized into unprepared queries in both a single-quoted string context and a bare numeric context. |
| Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network. |
| Heap-based buffer overflow in DNS Server allows an authorized attacker to disclose information over a network. |
| The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.1.0 via the 'ID' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with author-level access and above, to modify arbitrary courses created by other instructors — overwriting their title, content, and status — and reassign ownership of those courses to themselves. This is possible because Input::sanitize_array() preserves attacker-supplied POST keys (including 'ID') without stripping them, and WordPress interprets a non-empty ID in the wp_insert_post() argument array as an update to the existing post rather than a new insert. |
| A flaw was found in xorg-x11-server. A use-after-free vulnerability, where the application accesses memory after it has already been released, occurs in the Present extension because window notification entries are not properly unlinked before cleaning up window resources. An authenticated local X client can exploit this flaw by creating cross-window notifications and subsequently destroying the target window. Successful exploitation primarily results in a Denial of Service (DoS) via an X server crash, and may potentially lead to information disclosure. |
| A flaw was found in xorg-x11-server. The GLX (OpenGL Extension to the X Window System) interface fails to verify that incoming data sizes do not exceed allocated buffer limits when handling large rendering requests. An authenticated local client can exploit this vulnerability by sending a specially crafted request, triggering a heap-based buffer overflow. Successful exploitation can result in arbitrary code execution with the privileges of the X server or cause a Denial of Service (DoS) by crashing the application. |
| A flaw was found in xorg-x11-server. A local authenticated client can exploit this flaw by sending a crafted input device ungrab request with an unvalidated modifier value. This lack of validation causes the server to perform an out-of-bounds write on the heap, resulting in memory corruption that can lead to a denial of service (DoS) or potential arbitrary code execution. |
| A flaw was found in xorg-x11-server. An authenticated local user can trigger an out-of-bounds heap memory read by sending specially crafted X Keyboard Extension (XKB) requests with inconsistent key range parameters. This flaw leads to information disclosure, allowing the user to read sensitive data from the server's heap memory. |
