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CVSS v3.1 |
In the Linux kernel, the following vulnerability has been resolved:
serial: 8250: fix panic due to PSLVERR
When the PSLVERR_RESP_EN parameter is set to 1, the device generates
an error response if an attempt is made to read an empty RBR (Receive
Buffer Register) while the FIFO is enabled.
In serial8250_do_startup(), calling serial_port_out(port, UART_LCR,
UART_LCR_WLEN8) triggers dw8250_check_lcr(), which invokes
dw8250_force_idle() and serial8250_clear_and_reinit_fifos(). The latter
function enables the FIFO via serial_out(p, UART_FCR, p->fcr).
Execution proceeds to the serial_port_in(port, UART_RX).
This satisfies the PSLVERR trigger condition.
When another CPU (e.g., using printk()) is accessing the UART (UART
is busy), the current CPU fails the check (value & ~UART_LCR_SPAR) ==
(lcr & ~UART_LCR_SPAR) in dw8250_check_lcr(), causing it to enter
dw8250_force_idle().
Put serial_port_out(port, UART_LCR, UART_LCR_WLEN8) under the port->lock
to fix this issue.
Panic backtrace:
[ 0.442336] Oops - unknown exception [#1]
[ 0.442343] epc : dw8250_serial_in32+0x1e/0x4a
[ 0.442351] ra : serial8250_do_startup+0x2c8/0x88e
...
[ 0.442416] console_on_rootfs+0x26/0x70 |
In the Linux kernel, the following vulnerability has been resolved:
crypto: caam - Prevent crash on suspend with iMX8QM / iMX8ULP
Since the CAAM on these SoCs is managed by another ARM core, called the
SECO (Security Controller) on iMX8QM and Secure Enclave on iMX8ULP, which
also reserves access to register page 0 suspend operations cannot touch
this page.
This is similar to when running OPTEE, where OPTEE will reserve page 0.
Track this situation using a new state variable no_page0, reflecting if
page 0 is reserved elsewhere, either by other management cores in SoC or
by OPTEE.
Replace the optee_en check in suspend/resume with the new check.
optee_en cannot go away as it's needed elsewhere to gate OPTEE specific
situations.
Fixes the following splat at suspend:
Internal error: synchronous external abort: 0000000096000010 [#1] SMP
Hardware name: Freescale i.MX8QXP ACU6C (DT)
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : readl+0x0/0x18
lr : rd_reg32+0x18/0x3c
sp : ffffffc08192ba20
x29: ffffffc08192ba20 x28: ffffff8025190000 x27: 0000000000000000
x26: ffffffc0808ae808 x25: ffffffc080922338 x24: ffffff8020e89090
x23: 0000000000000000 x22: ffffffc080922000 x21: ffffff8020e89010
x20: ffffffc080387ef8 x19: ffffff8020e89010 x18: 000000005d8000d5
x17: 0000000030f35963 x16: 000000008f785f3f x15: 000000003b8ef57c
x14: 00000000c418aef8 x13: 00000000f5fea526 x12: 0000000000000001
x11: 0000000000000002 x10: 0000000000000001 x9 : 0000000000000000
x8 : ffffff8025190870 x7 : ffffff8021726880 x6 : 0000000000000002
x5 : ffffff80217268f0 x4 : ffffff8021726880 x3 : ffffffc081200000
x2 : 0000000000000001 x1 : ffffff8020e89010 x0 : ffffffc081200004
Call trace:
readl+0x0/0x18
caam_ctrl_suspend+0x30/0xdc
dpm_run_callback.constprop.0+0x24/0x5c
device_suspend+0x170/0x2e8
dpm_suspend+0xa0/0x104
dpm_suspend_start+0x48/0x50
suspend_devices_and_enter+0x7c/0x45c
pm_suspend+0x148/0x160
state_store+0xb4/0xf8
kobj_attr_store+0x14/0x24
sysfs_kf_write+0x38/0x48
kernfs_fop_write_iter+0xb4/0x178
vfs_write+0x118/0x178
ksys_write+0x6c/0xd0
__arm64_sys_write+0x14/0x1c
invoke_syscall.constprop.0+0x64/0xb0
do_el0_svc+0x90/0xb0
el0_svc+0x18/0x44
el0t_64_sync_handler+0x88/0x124
el0t_64_sync+0x150/0x154
Code: 88dffc21 88dffc21 5ac00800 d65f03c0 (b9400000) |
In the Linux kernel, the following vulnerability has been resolved:
media: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls
Both the ACE and CSI driver are missing a mei_cldev_disable() call in
their remove() function.
This causes the mei_cl client to stay part of the mei_device->file_list
list even though its memory is freed by mei_cl_bus_dev_release() calling
kfree(cldev->cl).
This leads to a use-after-free when mei_vsc_remove() runs mei_stop()
which first removes all mei bus devices calling mei_ace_remove() and
mei_csi_remove() followed by mei_cl_bus_dev_release() and then calls
mei_cl_all_disconnect() which walks over mei_device->file_list dereferecing
the just freed cldev->cl.
And mei_vsc_remove() it self is run at shutdown because of the
platform_device_unregister(tp->pdev) in vsc_tp_shutdown()
When building a kernel with KASAN this leads to the following KASAN report:
[ 106.634504] ==================================================================
[ 106.634623] BUG: KASAN: slab-use-after-free in mei_cl_set_disconnected (drivers/misc/mei/client.c:783) mei
[ 106.634683] Read of size 4 at addr ffff88819cb62018 by task systemd-shutdow/1
[ 106.634729]
[ 106.634767] Tainted: [E]=UNSIGNED_MODULE
[ 106.634770] Hardware name: Dell Inc. XPS 16 9640/09CK4V, BIOS 1.12.0 02/10/2025
[ 106.634773] Call Trace:
[ 106.634777] <TASK>
...
[ 106.634871] kasan_report (mm/kasan/report.c:221 mm/kasan/report.c:636)
[ 106.634901] mei_cl_set_disconnected (drivers/misc/mei/client.c:783) mei
[ 106.634921] mei_cl_all_disconnect (drivers/misc/mei/client.c:2165 (discriminator 4)) mei
[ 106.634941] mei_reset (drivers/misc/mei/init.c:163) mei
...
[ 106.635042] mei_stop (drivers/misc/mei/init.c:348) mei
[ 106.635062] mei_vsc_remove (drivers/misc/mei/mei_dev.h:784 drivers/misc/mei/platform-vsc.c:393) mei_vsc
[ 106.635066] platform_remove (drivers/base/platform.c:1424)
Add the missing mei_cldev_disable() calls so that the mei_cl gets removed
from mei_device->file_list before it is freed to fix this. |
In the Linux kernel, the following vulnerability has been resolved:
comedi: Make insn_rw_emulate_bits() do insn->n samples
The `insn_rw_emulate_bits()` function is used as a default handler for
`INSN_READ` instructions for subdevices that have a handler for
`INSN_BITS` but not for `INSN_READ`. Similarly, it is used as a default
handler for `INSN_WRITE` instructions for subdevices that have a handler
for `INSN_BITS` but not for `INSN_WRITE`. It works by emulating the
`INSN_READ` or `INSN_WRITE` instruction handling with a constructed
`INSN_BITS` instruction. However, `INSN_READ` and `INSN_WRITE`
instructions are supposed to be able read or write multiple samples,
indicated by the `insn->n` value, but `insn_rw_emulate_bits()` currently
only handles a single sample. For `INSN_READ`, the comedi core will
copy `insn->n` samples back to user-space. (That triggered KASAN
kernel-infoleak errors when `insn->n` was greater than 1, but that is
being fixed more generally elsewhere in the comedi core.)
Make `insn_rw_emulate_bits()` either handle `insn->n` samples, or return
an error, to conform to the general expectation for `INSN_READ` and
`INSN_WRITE` handlers. |
In the Linux kernel, the following vulnerability has been resolved:
scsi: ufs: ufs-qcom: Fix ESI null pointer dereference
ESI/MSI is a performance optimization feature that provides dedicated
interrupts per MCQ hardware queue. This is optional feature and UFS MCQ
should work with and without ESI feature.
Commit e46a28cea29a ("scsi: ufs: qcom: Remove the MSI descriptor abuse")
brings a regression in ESI (Enhanced System Interrupt) configuration that
causes a null pointer dereference when Platform MSI allocation fails.
The issue occurs in when platform_device_msi_init_and_alloc_irqs() in
ufs_qcom_config_esi() fails (returns -EINVAL) but the current code uses
__free() macro for automatic cleanup free MSI resources that were never
successfully allocated.
Unable to handle kernel NULL pointer dereference at virtual
address 0000000000000008
Call trace:
mutex_lock+0xc/0x54 (P)
platform_device_msi_free_irqs_all+0x1c/0x40
ufs_qcom_config_esi+0x1d0/0x220 [ufs_qcom]
ufshcd_config_mcq+0x28/0x104
ufshcd_init+0xa3c/0xf40
ufshcd_pltfrm_init+0x504/0x7d4
ufs_qcom_probe+0x20/0x58 [ufs_qcom]
Fix by restructuring the ESI configuration to try MSI allocation first,
before any other resource allocation and instead use explicit cleanup
instead of __free() macro to avoid cleanup of unallocated resources.
Tested on SM8750 platform with MCQ enabled, both with and without
Platform ESI support. |
In the Linux kernel, the following vulnerability has been resolved:
mm/vmscan: fix hwpoisoned large folio handling in shrink_folio_list
In shrink_folio_list(), the hwpoisoned folio may be large folio, which
can't be handled by unmap_poisoned_folio(). For THP, try_to_unmap_one()
must be passed with TTU_SPLIT_HUGE_PMD to split huge PMD first and then
retry. Without TTU_SPLIT_HUGE_PMD, we will trigger null-ptr deref of
pvmw.pte. Even we passed TTU_SPLIT_HUGE_PMD, we will trigger a
WARN_ON_ONCE due to the page isn't in swapcache.
Since UCE is rare in real world, and race with reclaimation is more rare,
just skipping the hwpoisoned large folio is enough. memory_failure() will
handle it if the UCE is triggered again.
This happens when memory reclaim for large folio races with
memory_failure(), and will lead to kernel panic. The race is as
follows:
cpu0 cpu1
shrink_folio_list memory_failure
TestSetPageHWPoison
unmap_poisoned_folio
--> trigger BUG_ON due to
unmap_poisoned_folio couldn't
handle large folio
[tujinjiang@huawei.com: add comment to unmap_poisoned_folio()] |
In the Linux kernel, the following vulnerability has been resolved:
crypto: qat - flush misc workqueue during device shutdown
Repeated loading and unloading of a device specific QAT driver, for
example qat_4xxx, in a tight loop can lead to a crash due to a
use-after-free scenario. This occurs when a power management (PM)
interrupt triggers just before the device-specific driver (e.g.,
qat_4xxx.ko) is unloaded, while the core driver (intel_qat.ko) remains
loaded.
Since the driver uses a shared workqueue (`qat_misc_wq`) across all
devices and owned by intel_qat.ko, a deferred routine from the
device-specific driver may still be pending in the queue. If this
routine executes after the driver is unloaded, it can dereference freed
memory, resulting in a page fault and kernel crash like the following:
BUG: unable to handle page fault for address: ffa000002e50a01c
#PF: supervisor read access in kernel mode
RIP: 0010:pm_bh_handler+0x1d2/0x250 [intel_qat]
Call Trace:
pm_bh_handler+0x1d2/0x250 [intel_qat]
process_one_work+0x171/0x340
worker_thread+0x277/0x3a0
kthread+0xf0/0x120
ret_from_fork+0x2d/0x50
To prevent this, flush the misc workqueue during device shutdown to
ensure that all pending work items are completed before the driver is
unloaded.
Note: This approach may slightly increase shutdown latency if the
workqueue contains jobs from other devices, but it ensures correctness
and stability. |
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Avoid a NULL pointer dereference
[WHY]
Although unlikely drm_atomic_get_new_connector_state() or
drm_atomic_get_old_connector_state() can return NULL.
[HOW]
Check returns before dereference.
(cherry picked from commit 1e5e8d672fec9f2ab352be121be971877bff2af9) |
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: check if hubbub is NULL in debugfs/amdgpu_dm_capabilities
HUBBUB structure is not initialized on DCE hardware, so check if it is NULL
to avoid null dereference while accessing amdgpu_dm_capabilities file in
debugfs. |
In the Linux kernel, the following vulnerability has been resolved:
media: mt9m114: Fix deadlock in get_frame_interval/set_frame_interval
Getting / Setting the frame interval using the V4L2 subdev pad ops
get_frame_interval/set_frame_interval causes a deadlock, as the
subdev state is locked in the [1] but also in the driver itself.
In [2] it's described that the caller is responsible to acquire and
release the lock in this case. Therefore, acquiring the lock in the
driver is wrong.
Remove the lock acquisitions/releases from mt9m114_ifp_get_frame_interval()
and mt9m114_ifp_set_frame_interval().
[1] drivers/media/v4l2-core/v4l2-subdev.c - line 1129
[2] Documentation/driver-api/media/v4l2-subdev.rst |
An integer overflow in the SMU could allow a privileged attacker to potentially write memory beyond the end of the reserved dRAM area resulting in loss of integrity or availability. |
A weakness has been identified in itsourcecode POS Point of Sale System 1.0. Impacted is an unknown function of the file /inventory/main/vendors/datatables/unit_testing/templates/dom_data_th.php. This manipulation of the argument scripts causes cross site scripting. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be exploited. |
In the Linux kernel, the following vulnerability has been resolved:
mm: swap: fix potential buffer overflow in setup_clusters()
In setup_swap_map(), we only ensure badpages are in range (0, last_page].
As maxpages might be < last_page, setup_clusters() will encounter a buffer
overflow when a badpage is >= maxpages.
Only call inc_cluster_info_page() for badpage which is < maxpages to fix
the issue. |
In the Linux kernel, the following vulnerability has been resolved:
crypto: ccp - Fix dereferencing uninitialized error pointer
Fix below smatch warnings:
drivers/crypto/ccp/sev-dev.c:1312 __sev_platform_init_locked()
error: we previously assumed 'error' could be null |
A flaw has been found in PHPGurukul Small CRM 4.0. Affected by this vulnerability is an unknown functionality of the file /get-quote.php. Executing manipulation of the argument Contact can lead to sql injection. The attack can be executed remotely. The exploit has been published and may be used. |
OPSI before 4.3 allows any client to retrieve any ProductPropertyState, including those of other clients. This can lead to privilege escalation if any ProductPropertyState contains a secret only intended to be accessible by a subset of clients. One example of this is a domain join account password for the windomain package. |
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: fix a Null pointer dereference vulnerability
[Why]
A null pointer dereference vulnerability exists in the AMD display driver's
(DC module) cleanup function dc_destruct().
When display control context (dc->ctx) construction fails
(due to memory allocation failure), this pointer remains NULL.
During subsequent error handling when dc_destruct() is called,
there's no NULL check before dereferencing the perf_trace member
(dc->ctx->perf_trace), causing a kernel null pointer dereference crash.
[How]
Check if dc->ctx is non-NULL before dereferencing.
(Updated commit text and removed unnecessary error message)
(cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404) |
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Destroy KFD debugfs after destroy KFD wq
Since KFD proc content was moved to kernel debugfs, we can't destroy KFD
debugfs before kfd_process_destroy_wq. Move kfd_process_destroy_wq prior
to kfd_debugfs_fini to fix a kernel NULL pointer problem. It happens
when /sys/kernel/debug/kfd was already destroyed in kfd_debugfs_fini but
kfd_process_destroy_wq calls kfd_debugfs_remove_process. This line
debugfs_remove_recursive(entry->proc_dentry);
tries to remove /sys/kernel/debug/kfd/proc/<pid> while
/sys/kernel/debug/kfd is already gone. It hangs the kernel by kernel
NULL pointer.
(cherry picked from commit 0333052d90683d88531558dcfdbf2525cc37c233) |
A vulnerability was identified in itsourcecode POS Point of Sale System 1.0. This affects an unknown part of the file /inventory/main/vendors/datatables/unit_testing/templates/6776.php. Such manipulation of the argument scripts leads to cross site scripting. The attack can be launched remotely. The exploit is publicly available and might be used. |
A security flaw has been discovered in itsourcecode POS Point of Sale System 1.0. This vulnerability affects unknown code of the file /inventory/main/vendors/datatables/unit_testing/templates/complex_header_2.php. Performing manipulation of the argument scripts results in cross site scripting. The attack may be initiated remotely. The exploit has been released to the public and may be exploited. |