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In the Linux kernel, the following vulnerability has been...

Moderate severity Unreviewed Published May 20, 2024 to the GitHub Advisory Database • Updated Jun 26, 2024

Package

No package listedSuggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

In the Linux kernel, the following vulnerability has been resolved:

dma: xilinx_dpdma: Fix locking

There are several places where either chan->lock or chan->vchan.lock was
not held. Add appropriate locking. This fixes lockdep warnings like

[ 31.077578] ------------[ cut here ]------------
[ 31.077831] WARNING: CPU: 2 PID: 40 at drivers/dma/xilinx/xilinx_dpdma.c:834 xilinx_dpdma_chan_queue_transfer+0x274/0x5e0
[ 31.077953] Modules linked in:
[ 31.078019] CPU: 2 PID: 40 Comm: kworker/u12:1 Not tainted 6.6.20+ #98
[ 31.078102] Hardware name: xlnx,zynqmp (DT)
[ 31.078169] Workqueue: events_unbound deferred_probe_work_func
[ 31.078272] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 31.078377] pc : xilinx_dpdma_chan_queue_transfer+0x274/0x5e0
[ 31.078473] lr : xilinx_dpdma_chan_queue_transfer+0x270/0x5e0
[ 31.078550] sp : ffffffc083bb2e10
[ 31.078590] x29: ffffffc083bb2e10 x28: 0000000000000000 x27: ffffff880165a168
[ 31.078754] x26: ffffff880164e920 x25: ffffff880164eab8 x24: ffffff880164d480
[ 31.078920] x23: ffffff880165a148 x22: ffffff880164e988 x21: 0000000000000000
[ 31.079132] x20: ffffffc082aa3000 x19: ffffff880164e880 x18: 0000000000000000
[ 31.079295] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[ 31.079453] x14: 0000000000000000 x13: ffffff8802263dc0 x12: 0000000000000001
[ 31.079613] x11: 0001ffc083bb2e34 x10: 0001ff880164e98f x9 : 0001ffc082aa3def
[ 31.079824] x8 : 0001ffc082aa3dec x7 : 0000000000000000 x6 : 0000000000000516
[ 31.079982] x5 : ffffffc7f8d43000 x4 : ffffff88003c9c40 x3 : ffffffffffffffff
[ 31.080147] x2 : ffffffc7f8d43000 x1 : 00000000000000c0 x0 : 0000000000000000
[ 31.080307] Call trace:
[ 31.080340] xilinx_dpdma_chan_queue_transfer+0x274/0x5e0
[ 31.080518] xilinx_dpdma_issue_pending+0x11c/0x120
[ 31.080595] zynqmp_disp_layer_update+0x180/0x3ac
[ 31.080712] zynqmp_dpsub_plane_atomic_update+0x11c/0x21c
[ 31.080825] drm_atomic_helper_commit_planes+0x20c/0x684
[ 31.080951] drm_atomic_helper_commit_tail+0x5c/0xb0
[ 31.081139] commit_tail+0x234/0x294
[ 31.081246] drm_atomic_helper_commit+0x1f8/0x210
[ 31.081363] drm_atomic_commit+0x100/0x140
[ 31.081477] drm_client_modeset_commit_atomic+0x318/0x384
[ 31.081634] drm_client_modeset_commit_locked+0x8c/0x24c
[ 31.081725] drm_client_modeset_commit+0x34/0x5c
[ 31.081812] __drm_fb_helper_restore_fbdev_mode_unlocked+0x104/0x168
[ 31.081899] drm_fb_helper_set_par+0x50/0x70
[ 31.081971] fbcon_init+0x538/0xc48
[ 31.082047] visual_init+0x16c/0x23c
[ 31.082207] do_bind_con_driver.isra.0+0x2d0/0x634
[ 31.082320] do_take_over_console+0x24c/0x33c
[ 31.082429] do_fbcon_takeover+0xbc/0x1b0
[ 31.082503] fbcon_fb_registered+0x2d0/0x34c
[ 31.082663] register_framebuffer+0x27c/0x38c
[ 31.082767] __drm_fb_helper_initial_config_and_unlock+0x5c0/0x91c
[ 31.082939] drm_fb_helper_initial_config+0x50/0x74
[ 31.083012] drm_fbdev_dma_client_hotplug+0xb8/0x108
[ 31.083115] drm_client_register+0xa0/0xf4
[ 31.083195] drm_fbdev_dma_setup+0xb0/0x1cc
[ 31.083293] zynqmp_dpsub_drm_init+0x45c/0x4e0
[ 31.083431] zynqmp_dpsub_probe+0x444/0x5e0
[ 31.083616] platform_probe+0x8c/0x13c
[ 31.083713] really_probe+0x258/0x59c
[ 31.083793] __driver_probe_device+0xc4/0x224
[ 31.083878] driver_probe_device+0x70/0x1c0
[ 31.083961] __device_attach_driver+0x108/0x1e0
[ 31.084052] bus_for_each_drv+0x9c/0x100
[ 31.084125] __device_attach+0x100/0x298
[ 31.084207] device_initial_probe+0x14/0x20
[ 31.084292] bus_probe_device+0xd8/0xdc
[ 31.084368] deferred_probe_work_func+0x11c/0x180
[ 31.084451] process_one_work+0x3ac/0x988
[ 31.084643] worker_thread+0x398/0x694
[ 31.084752] kthread+0x1bc/0x1c0
[ 31.084848] ret_from_fork+0x10/0x20
[ 31.084932] irq event stamp: 64549
[ 31.084970] hardirqs last enabled at (64548): [] _raw_spin_unlock_irqrestore+0x80/0x90
[ 31.085157]
---truncated---

References

Published by the National Vulnerability Database May 20, 2024
Published to the GitHub Advisory Database May 20, 2024
Last updated Jun 26, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.042%
(5th percentile)

Weaknesses

CVE ID

CVE-2024-35990

GHSA ID

GHSA-4cj3-wcfq-725p

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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