| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
drm/imagination: Fix double call to drm_sched_entity_fini()
Call sequence of double call:
pvr_context_destroy
pvr_context_kill_queues
pvr_queue_kill
drm_sched_entity_destroy
drm_sched_entity_fini // here
pvr_context_put
kref_put(..., pvr_context_release)
pvr_context_destroy_queues
pvr_queue_destroy
drm_sched_entity_fini // here
Call to drm_sched_entity_destroy() from pvr_context_kill_queues() calls
drm_sched_entity_flush() + drm_sched_entity_fini().
drm_sched_entity_flush() ensures all pending jobs are completed and
drm_sched_entity_fini() ensures no further submission is allowed as
per expectation from pvr_context_kill_queues(). Double call to
drm_sched_entity_fini() is misuse of the API so keep call only in
pvr_context_create() failure path.
Stack trace for issue with addition of refcounting for DRM entity
stats in commit fd177135f0e6 ("drm/sched: Account entity GPU time"):
[ 789.490527] ------------[ cut here ]------------
[ 789.490559] refcount_t: underflow; use-after-free.
[ 789.490657] WARNING: lib/refcount.c:28 at refcount_warn_saturate+0xf4/0x144, CPU#0: kworker/u16:1/440
[ 789.490695] Modules linked in: powervr drm_gpuvm drm_exec gpu_sched drm_shmem_helper xhci_plat_hcd xhci_hcd dwc3 usbcore usb_common snd_soc_simple_card snd_soc_simple_card_utils sa2ul sha512 sha256 dwc3_am62 sha1 authenc rti_wdt libsha512 at24 sch_fq_codel fuse dm_mod ipv6
[ 789.490798] CPU: 0 UID: 0 PID: 440 Comm: kworker/u16:1 Not tainted 7.0.0-rc7-02049-g5e2c0700091b #22 PREEMPT
[ 789.490809] Hardware name: Texas Instruments AM625 SK (DT)
[ 789.490815] Workqueue: powervr-sched pvr_queue_fence_release_work [powervr]
[ 789.490868] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 789.490876] pc : refcount_warn_saturate+0xf4/0x144
[ 789.490884] lr : refcount_warn_saturate+0xf4/0x144
[ 789.490892] sp : ffff8000822cbcc0
[ 789.490895] x29: ffff8000822cbcc0 x28: 0000000000000000 x27: 0000000000000000
[ 789.490909] x26: 0000000000000000 x25: ffff800081b1e338 x24: ffff000004541405
[ 789.490922] x23: ffff000004bea950 x22: ffff00000042e400 x21: ffff000007123e30
[ 789.490935] x20: ffff000007123000 x19: ffff000007a80d50 x18: fffffffffffe7768
[ 789.490948] x17: 74736574202c6e6f x16: 697461746e656d65 x15: ffff800081b269f0
[ 789.490962] x14: 0000000000000030 x13: ffff800081b26a70 x12: 0000000000000211
[ 789.490975] x11: 00000000000000c0 x10: 0000000000000b50 x9 : ffff8000822cbb30
[ 789.490988] x8 : ffff0000014e7bb0 x7 : ffff00007725e780 x6 : 0000000372a05f49
[ 789.491001] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000010
[ 789.491013] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000014e7000
[ 789.491027] Call trace:
[ 789.491032] refcount_warn_saturate+0xf4/0x144 (P)
[ 789.491043] drm_sched_entity_fini+0x164/0x18c [gpu_sched]
[ 789.491081] pvr_queue_destroy+0x64/0x134 [powervr]
[ 789.491110] pvr_context_destroy_queues+0x34/0x64 [powervr]
[ 789.491138] pvr_context_release+0x70/0xac [powervr]
[ 789.491166] pvr_context_put.part.0+0x5c/0x7c [powervr]
[ 789.491193] pvr_context_put+0x14/0x24 [powervr]
[ 789.491221] pvr_queue_fence_release_work+0x20/0x38 [powervr]
[ 789.491249] process_one_work+0x160/0x4c4
[ 789.491264] worker_thread+0x188/0x310
[ 789.491276] kthread+0x130/0x13c
[ 789.491287] ret_from_fork+0x10/0x20
[ 789.491300] ---[ end trace 0000000000000000 ]--- |
| In the Linux kernel, the following vulnerability has been resolved:
drm/imagination: Fix user array stride in pvr_set_uobj_array()
pvr_set_uobj_array() copies an array of kernel objects to a userspace
array whose element size is described by out->stride. When out->stride
is different from the kernel object size, the slow path advances the
userspace pointer by the kernel object size and the kernel pointer by the
userspace stride.
This reverses the intended layout. For larger userspace strides, later
copies read from the wrong kernel addresses. For smaller userspace
strides, later copies are written at the wrong userspace offsets. The
padding clear is also done only for the first element instead of the
padding area for each element.
Advance the userspace pointer by out->stride and the kernel pointer by
obj_size, and clear per-element padding while the current userspace
pointer is still available. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/imagination: fix error checking of pvr_vm_context_lookup()
Since pvr_vm_context_lookup() returns either NULL or a pointer, then stop
using IS_ERR() for checking the return value.
Using IS_ERR() leads to the kernel oops reported below. It can be
reproduced by passing an invalid VM context handle from userspace to the
DRM_IOCTL_PVR_CREATE_CONTEXT ioctl.
[ 92.733119] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000148
[ 92.742042] Mem abort info:
[ 92.744890] ESR = 0x0000000096000004
[ 92.748686] EC = 0x25: DABT (current EL), IL = 32 bits
[ 92.754020] SET = 0, FnV = 0
[ 92.757154] EA = 0, S1PTW = 0
[ 92.760337] FSC = 0x04: level 0 translation fault
[ 92.765243] Data abort info:
[ 92.768129] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
[ 92.773626] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 92.778763] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 92.784098] user pgtable: 4k pages, 48-bit VAs, pgdp=000000088ed23000
[ 92.790550] [0000000000000148] pgd=0000000000000000, p4d=0000000000000000
[ 92.797381] Internal error: Oops: 0000000096000004 [#1] SMP
[ 92.803027] Modules linked in: powervr
[ 92.852533] CPU: 0 UID: 0 PID: 409 Comm: triangle Not tainted 7.1.0-rc5-g98b46e693b91 #1 PREEMPT
[ 92.861385] Hardware name: Texas Instruments AM68 SK (DT)
[ 92.866766] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 92.873709] pc : pvr_vm_get_fw_mem_context+0x0/0xc [powervr]
[ 92.879376] lr : pvr_queue_create+0x26c/0x440 [powervr]
[ 92.884595] sp : ffff8000837fbb00
[ 92.887895] x29: ffff8000837fbb60 x28: 0000000000000000 x27: ffff8000837fbce8
[ 92.895015] x26: ffff000807f61a40 x25: ffff000807f61a00 x24: ffff000807f64400
[ 92.902135] x23: ffff00080a5ab000 x22: ffff800079b24730 x21: ffff000807f61800
[ 92.909254] x20: ffff00080999e680 x19: 0000000000000000 x18: 0000000000000000
[ 92.916373] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001
[ 92.923492] x14: 0000000000000000 x13: 0000000000000002 x12: ffff80008145b298
[ 92.930611] x11: ffff8000844e5000 x10: ffff80008165a130 x9 : 0000000000000100
[ 92.937730] x8 : 0000000000000001 x7 : ffff0008076b27e0 x6 : ffff00080ec43b7c
[ 92.944850] x5 : ffff00080ec43b78 x4 : 0000000000000000 x3 : ffff00080999e680
[ 92.951968] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
[ 92.959088] Call trace:
[ 92.961521] pvr_vm_get_fw_mem_context+0x0/0xc [powervr] (P)
[ 92.967173] pvr_context_create+0x190/0x410 [powervr]
[ 92.972218] pvr_ioctl_create_context+0x44/0x8c [powervr]
[ 92.977608] drm_ioctl_kernel+0xbc/0x124 [drm]
[ 92.982127] drm_ioctl+0x1f8/0x4dc [drm]
[ 92.986098] __arm64_sys_ioctl+0xac/0x104
[ 92.990102] invoke_syscall+0x54/0x10c
[ 92.993842] el0_svc_common.constprop.0+0x40/0xe0
[ 92.998532] do_el0_svc+0x1c/0x28
[ 93.001835] el0_svc+0x38/0x11c
[ 93.004969] el0t_64_sync_handler+0xa0/0xe4
[ 93.009139] el0t_64_sync+0x198/0x19c
[ 93.012792] Code: aa1703e0 d2800014 95cb0ba4 17ffffe8 (f940a400)
[ 93.018869] ---[ end trace 0000000000000000 ]--- |
| In the Linux kernel, the following vulnerability has been resolved:
drm/imagination: acquire vm_ctx->lock before mapping memory to GPU VM
The drm gpuvm code doesn't protect find operation against map operation,
and the driver needs to ensure a map operation shouldn't happen when a
find operation is in progress.
In some cases a find operation will be in progress when doing map/unmap
operations, and the find operation will do a NULL pointer dereference.
An example of the stack trace of such NULL dereference is shown below:
```
Unable to handle kernel access to user memory without uaccess routines at
virtual address 0000000000000010
[<ffffffff01e989d4>] drm_gpuva_find+0x28/0x6c [drm_gpuvm]
[<ffffffff01ed3a40>] pvr_vm_unmap+0x34/0x68 [powervr]
[<ffffffff01ec69da>] pvr_ioctl_vm_unmap+0x2e/0x50 [powervr]
[<ffffffff8080ce0a>] drm_ioctl_kernel+0x8e/0xdc
[<ffffffff8080d016>] drm_ioctl+0x1be/0x3e0
[<ffffffff802bec3e>] __riscv_sys_ioctl+0xba/0xc4
[<ffffffff80d858b2>] do_trap_ecall_u+0x23e/0x3f4
[<ffffffff80d92288>] handle_exception+0x168/0x174
```
As all occurences of drm_gpuva_find*() are already guarded by
vm_ctx->lock, make pvr_vm_map() to acquire this lock to prevent
disturbing any find operation. This fixes the NULL deference problem in
drm_gpuva_find*(). |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Check bounds in allocate_event_notification_slot
The valid event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT
allocate_event_notification_slot has an option to specify
an event id to allocate at, used by CRIU. We weren't checking
the bounds on that value.
Check them.
v2: Lower bounds check is unecessary because of idr_alloc
already rejecting negative numbers. Upper bounds check should
be KFD_SIGNAL_EVENT_LIMIT since the signal mode mappings might
not yet exist
(cherry picked from commit 6853f1f6cbbeb3f53ebbbd7286536aeb2c5d5f50) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Check bounds on CRIU restore queue type and mqd size
We weren't checking whether the values provided in the private
data in kfd CRIU restore were within bounds.
For queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided
type is less than it.
For mqd_size, add new function mqd_size_from_queue_type and confirm
that the provided mqd_size matches expectations.
(cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: fix 32-bit overflow in CWSR total size calculation
total_cwsr_size was computed in 32-bit before being used as a BO/SVM
allocation size.
With large ctx_save_restore_area_size and debug_memory_size
multiplied by the XCC count, the product can wrap,
yielding an undersized CWSR save area that firmware later overruns.
Promote total_cwsr_size to u64 and use check_add_overflow()/
check_mul_overflow() in both kfd_queue_acquire_buffers() and
kfd_queue_release_buffers().
(cherry picked from commit 319f7e13423ae3f486b9aea82f9ad2d6af0ee608) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference
prev_sink is unconditionally retained via dc_sink_retain at function
entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT
returns false without releasing prev_sink. All other return paths in the
function correctly call dc_sink_release(prev_sink), making this the only
missing cleanup.
(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/virtio: bound EDID block reads to the response buffer
virtio_get_edid_block() validates the read offset only against the
device-supplied resp->size field, never against the fixed-size resp->edid
array. The EDID block index is driven by the device-supplied extension
count, so a malicious virtio-gpu backend can advertise a large size
together with a high block count and read far past the array into adjacent
kernel memory, which is then surfaced in the parsed EDID (an out-of-bounds
read / info leak).
Also reject any read whose end exceeds the size of the edid array.
Conforming EDID responses stay within the array and are unaffected. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/i915/vrr: require valid min/max vfreq for VRR
Ensure the EDID provided min/max vfreq are valid. Most scenarios are
already covered (by coincidence) through the checks in
intel_vrr_is_capable() and intel_vrr_is_in_range(), but be more explicit
about it. At worst, a zero min_vfreq could lead to a division by zero in
intel_vrr_compute_vmax().
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
(cherry picked from commit 1765cf59f517b02f3b0591fe5120930d08bddeb6) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/i915/hdcp: check streams[] bounds before overflow
The data->streams[] overflow check is done after the buffer overflow has
already happened. Move the overflow check before the write.
Side note, emitting a warning splat with a backtrace might be overkill
here, but prefer not changing the behaviour other than not doing the
overrun.
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
(cherry picked from commit 9284ab3b6e776c315883ac2611283d263c9460fd) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/sdma7.0: replace BUG_ON() with WARN_ON()
There's no need to crash the kernel for these cases.
(cherry picked from commit 9723a8bed3aa251a26bee4583bac9d8fb064dd44) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/sdma6.0: replace BUG_ON() with WARN_ON()
There's no need to crash the kernel for these cases.
(cherry picked from commit c17a508a7d652da3728f8bbc481bfffe96d65a87) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/sdma5.2: replace BUG_ON() with WARN_ON()
There's no need to crash the kernel for these cases.
(cherry picked from commit ae658afc7f47f6147371ec42cc6b1a793dfdb5af) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/sdma5.0: replace BUG_ON() with WARN_ON()
There's no need to crash the kernel for these cases.
(cherry picked from commit 8d144a0eb09537055841af48c9e7c2d4cd48e84d) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/i915: Return NULL on error in active_instance
Avoid returning &node->base when node is NULL due to OOM
during GFP_ATOMIC allocation.
Discovered using AI-assisted static analysis confirmed by
Intel Product Security.
(cherry picked from commit 6029bc064f0b1bac184203a50fbaaf070fa18832) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/i915/bios: range check LFP Data Block panel_type2
While the panel_type from LFP Data Block is range checked, panel_type2
is not. Add a few helpers for range checking, and use them to not only
check panel_type2, but also improve clarity and correctness in the panel
type selection.
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
v2:
- Fix commit message typo (Michał)
- Add is_panel_type_pnp() (Ville)
(cherry picked from commit c9ebe5d2f25729d6cfbbb1235d640bf67f9275df) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/gfx11: replace BUG_ON() with WARN_ON()
There's no need to crash the kernel for these cases.
(cherry picked from commit daa62107452d2451787c4248ca38fa2d1a0cbefd) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()
The vm pointer returned from amdgpu_vm_get_vm_from_pasid() is only
valid while the lock is still being held. Once xa_unlock_irqrestore is
called and returned, the pointer is no longer under lock and is subject
to modification. Since, the caller still dereferences vm->task_info in
amdgpu_vm_get_task_info_vm() after the lock is removed, this causes a
use after unlock problem.
Remove the lifetime issue present in amdgpu_vm_get_task_info_pasid()
through removing the amdgpu_vm_get_vm_from_pasid() function from
amdgpu_vm.c and making the relevant code inline to hold the lock while
it is still in use.
(cherry picked from commit 9d01579f3f868b333acc901815972685989092c7) |
| In the Linux kernel, the following vulnerability has been resolved:
drm/i915/gem: Do not leak siblings[] on proto context error
After a successful BALANCE/PARALLEL_SUBMIT extension on context
creation, error during processing of next user extension leaks
the siblings[] array. Fix that.
Discovered using AI-assisted static analysis confirmed by
Intel Product Security.
(cherry picked from commit aa65e0a4b51b3b54b53e4142aaa2d997aa1061ff) |
