| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
mptcp: use the workqueue to destroy unaccepted sockets
Christoph reported a UaF at token lookup time after having
refactored the passive socket initialization part:
BUG: KASAN: use-after-free in __token_bucket_busy+0x253/0x260
Read of size 4 at addr ffff88810698d5b0 by task syz-executor653/3198
CPU: 1 PID: 3198 Comm: syz-executor653 Not tainted 6.2.0-rc59af4eaa31c1f6c00c8f1e448ed99a45c66340dd5 #6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x6e/0x91
print_report+0x16a/0x46f
kasan_report+0xad/0x130
__token_bucket_busy+0x253/0x260
mptcp_token_new_connect+0x13d/0x490
mptcp_connect+0x4ed/0x860
__inet_stream_connect+0x80e/0xd90
tcp_sendmsg_fastopen+0x3ce/0x710
mptcp_sendmsg+0xff1/0x1a20
inet_sendmsg+0x11d/0x140
__sys_sendto+0x405/0x490
__x64_sys_sendto+0xdc/0x1b0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
We need to properly clean-up all the paired MPTCP-level
resources and be sure to release the msk last, even when
the unaccepted subflow is destroyed by the TCP internals
via inet_child_forget().
We can re-use the existing MPTCP_WORK_CLOSE_SUBFLOW infra,
explicitly checking that for the critical scenario: the
closed subflow is the MPC one, the msk is not accepted and
eventually going through full cleanup.
With such change, __mptcp_destroy_sock() is always called
on msk sockets, even on accepted ones. We don't need anymore
to transiently drop one sk reference at msk clone time.
Please note this commit depends on the parent one:
mptcp: refactor passive socket initialization |
| In the Linux kernel, the following vulnerability has been resolved:
perf/x86/amd/core: Always clear status for idx
The variable 'status' (which contains the unhandled overflow bits) is
not being properly masked in some cases, displaying the following
warning:
WARNING: CPU: 156 PID: 475601 at arch/x86/events/amd/core.c:972 amd_pmu_v2_handle_irq+0x216/0x270
This seems to be happening because the loop is being continued before
the status bit being unset, in case x86_perf_event_set_period()
returns 0. This is also causing an inconsistency because the "handled"
counter is incremented, but the status bit is not cleaned.
Move the bit cleaning together above, together when the "handled"
counter is incremented. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: fix ttm_bo calltrace warning in psp_hw_fini
The call trace occurs when the amdgpu is removed after
the mode1 reset. During mode1 reset, from suspend to resume,
there is no need to reinitialize the ta firmware buffer
which caused the bo pin_count increase redundantly.
[ 489.885525] Call Trace:
[ 489.885525] <TASK>
[ 489.885526] amdttm_bo_put+0x34/0x50 [amdttm]
[ 489.885529] amdgpu_bo_free_kernel+0xe8/0x130 [amdgpu]
[ 489.885620] psp_free_shared_bufs+0xb7/0x150 [amdgpu]
[ 489.885720] psp_hw_fini+0xce/0x170 [amdgpu]
[ 489.885815] amdgpu_device_fini_hw+0x2ff/0x413 [amdgpu]
[ 489.885960] ? blocking_notifier_chain_unregister+0x56/0xb0
[ 489.885962] amdgpu_driver_unload_kms+0x51/0x60 [amdgpu]
[ 489.886049] amdgpu_pci_remove+0x5a/0x140 [amdgpu]
[ 489.886132] ? __pm_runtime_resume+0x60/0x90
[ 489.886134] pci_device_remove+0x3e/0xb0
[ 489.886135] __device_release_driver+0x1ab/0x2a0
[ 489.886137] driver_detach+0xf3/0x140
[ 489.886138] bus_remove_driver+0x6c/0xf0
[ 489.886140] driver_unregister+0x31/0x60
[ 489.886141] pci_unregister_driver+0x40/0x90
[ 489.886142] amdgpu_exit+0x15/0x451 [amdgpu] |
| In the Linux kernel, the following vulnerability has been resolved:
ftrace: Fix invalid address access in lookup_rec() when index is 0
KASAN reported follow problem:
BUG: KASAN: use-after-free in lookup_rec
Read of size 8 at addr ffff000199270ff0 by task modprobe
CPU: 2 Comm: modprobe
Call trace:
kasan_report
__asan_load8
lookup_rec
ftrace_location
arch_check_ftrace_location
check_kprobe_address_safe
register_kprobe
When checking pg->records[pg->index - 1].ip in lookup_rec(), it can get a
pg which is newly added to ftrace_pages_start in ftrace_process_locs().
Before the first pg->index++, index is 0 and accessing pg->records[-1].ip
will cause this problem.
Don't check the ip when pg->index is 0. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes
[WHY]
When PTEBufferSizeInRequests is zero, UBSAN reports the following
warning because dml_log2 returns an unexpected negative value:
shift exponent 4294966273 is too large for 32-bit type 'int'
[HOW]
In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and
assign the result directly. |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: scsi_dh_alua: Fix memleak for 'qdata' in alua_activate()
If alua_rtpg_queue() failed from alua_activate(), then 'qdata' is not
freed, which will cause following memleak:
unreferenced object 0xffff88810b2c6980 (size 32):
comm "kworker/u16:2", pid 635322, jiffies 4355801099 (age 1216426.076s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
40 39 24 c1 ff ff ff ff 00 f8 ea 0a 81 88 ff ff @9$.............
backtrace:
[<0000000098f3a26d>] alua_activate+0xb0/0x320
[<000000003b529641>] scsi_dh_activate+0xb2/0x140
[<000000007b296db3>] activate_path_work+0xc6/0xe0 [dm_multipath]
[<000000007adc9ace>] process_one_work+0x3c5/0x730
[<00000000c457a985>] worker_thread+0x93/0x650
[<00000000cb80e628>] kthread+0x1ba/0x210
[<00000000a1e61077>] ret_from_fork+0x22/0x30
Fix the problem by freeing 'qdata' in error path. |
| In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: Fix steering rules cleanup
vport's mc, uc and multicast rules are not deleted in teardown path when
EEH happens. Since the vport's promisc settings(uc, mc and all) in
firmware are reset after EEH, mlx5 driver will try to delete the above
rules in the initialization path. This cause kernel crash because these
software rules are no longer valid.
Fix by nullifying these rules right after delete to avoid accessing any dangling
pointers.
Call Trace:
__list_del_entry_valid+0xcc/0x100 (unreliable)
tree_put_node+0xf4/0x1b0 [mlx5_core]
tree_remove_node+0x30/0x70 [mlx5_core]
mlx5_del_flow_rules+0x14c/0x1f0 [mlx5_core]
esw_apply_vport_rx_mode+0x10c/0x200 [mlx5_core]
esw_update_vport_rx_mode+0xb4/0x180 [mlx5_core]
esw_vport_change_handle_locked+0x1ec/0x230 [mlx5_core]
esw_enable_vport+0x130/0x260 [mlx5_core]
mlx5_eswitch_enable_sriov+0x2a0/0x2f0 [mlx5_core]
mlx5_device_enable_sriov+0x74/0x440 [mlx5_core]
mlx5_load_one+0x114c/0x1550 [mlx5_core]
mlx5_pci_resume+0x68/0xf0 [mlx5_core]
eeh_report_resume+0x1a4/0x230
eeh_pe_dev_traverse+0x98/0x170
eeh_handle_normal_event+0x3e4/0x640
eeh_handle_event+0x4c/0x370
eeh_event_handler+0x14c/0x210
kthread+0x168/0x1b0
ret_from_kernel_thread+0x5c/0x84 |
| In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix data corruption after failed write
When buffered write fails to copy data into underlying page cache page,
ocfs2_write_end_nolock() just zeroes out and dirties the page. This can
leave dirty page beyond EOF and if page writeback tries to write this page
before write succeeds and expands i_size, page gets into inconsistent
state where page dirty bit is clear but buffer dirty bits stay set
resulting in page data never getting written and so data copied to the
page is lost. Fix the problem by invalidating page beyond EOF after
failed write. |
| In the Linux kernel, the following vulnerability has been resolved:
vp_vdpa: fix the crash in hot unplug with vp_vdpa
While unplugging the vp_vdpa device, it triggers a kernel panic
The root cause is: vdpa_mgmtdev_unregister() will accesses modern
devices which will cause a use after free.
So need to change the sequence in vp_vdpa_remove
[ 195.003359] BUG: unable to handle page fault for address: ff4e8beb80199014
[ 195.004012] #PF: supervisor read access in kernel mode
[ 195.004486] #PF: error_code(0x0000) - not-present page
[ 195.004960] PGD 100000067 P4D 1001b6067 PUD 1001b7067 PMD 1001b8067 PTE 0
[ 195.005578] Oops: 0000 1 PREEMPT SMP PTI
[ 195.005968] CPU: 13 PID: 164 Comm: kworker/u56:10 Kdump: loaded Not tainted 5.14.0-252.el9.x86_64 #1
[ 195.006792] Hardware name: Red Hat KVM/RHEL, BIOS edk2-20221207gitfff6d81270b5-2.el9 unknown
[ 195.007556] Workqueue: kacpi_hotplug acpi_hotplug_work_fn
[ 195.008059] RIP: 0010:ioread8+0x31/0x80
[ 195.008418] Code: 77 28 48 81 ff 00 00 01 00 76 0b 89 fa ec 0f b6 c0 c3 cc cc cc cc 8b 15 ad 72 93 01 b8 ff 00 00 00 85 d2 75 0f c3 cc cc cc cc <8a> 07 0f b6 c0 c3 cc cc cc cc 83 ea 01 48 83 ec 08 48 89 fe 48 c7
[ 195.010104] RSP: 0018:ff4e8beb8067bab8 EFLAGS: 00010292
[ 195.010584] RAX: ffffffffc05834a0 RBX: ffffffffc05843c0 RCX: ff4e8beb8067bae0
[ 195.011233] RDX: ff1bcbd580f88000 RSI: 0000000000000246 RDI: ff4e8beb80199014
[ 195.011881] RBP: ff1bcbd587e39000 R08: ffffffff916fa2d0 R09: ff4e8beb8067ba68
[ 195.012527] R10: 000000000000001c R11: 0000000000000000 R12: ff1bcbd5a3de9120
[ 195.013179] R13: ffffffffc062d000 R14: 0000000000000080 R15: ff1bcbe402bc7805
[ 195.013826] FS: 0000000000000000(0000) GS:ff1bcbe402740000(0000) knlGS:0000000000000000
[ 195.014564] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 195.015093] CR2: ff4e8beb80199014 CR3: 0000000107dea002 CR4: 0000000000771ee0
[ 195.015741] PKRU: 55555554
[ 195.016001] Call Trace:
[ 195.016233] <TASK>
[ 195.016434] vp_modern_get_status+0x12/0x20
[ 195.016823] vp_vdpa_reset+0x1b/0x50 [vp_vdpa]
[ 195.017238] virtio_vdpa_reset+0x3c/0x48 [virtio_vdpa]
[ 195.017709] remove_vq_common+0x1f/0x3a0 [virtio_net]
[ 195.018178] virtnet_remove+0x5d/0x70 [virtio_net]
[ 195.018618] virtio_dev_remove+0x3d/0x90
[ 195.018986] device_release_driver_internal+0x1aa/0x230
[ 195.019466] bus_remove_device+0xd8/0x150
[ 195.019841] device_del+0x18b/0x3f0
[ 195.020167] ? kernfs_find_ns+0x35/0xd0
[ 195.020526] device_unregister+0x13/0x60
[ 195.020894] unregister_virtio_device+0x11/0x20
[ 195.021311] device_release_driver_internal+0x1aa/0x230
[ 195.021790] bus_remove_device+0xd8/0x150
[ 195.022162] device_del+0x18b/0x3f0
[ 195.022487] device_unregister+0x13/0x60
[ 195.022852] ? vdpa_dev_remove+0x30/0x30 [vdpa]
[ 195.023270] vp_vdpa_dev_del+0x12/0x20 [vp_vdpa]
[ 195.023694] vdpa_match_remove+0x2b/0x40 [vdpa]
[ 195.024115] bus_for_each_dev+0x78/0xc0
[ 195.024471] vdpa_mgmtdev_unregister+0x65/0x80 [vdpa]
[ 195.024937] vp_vdpa_remove+0x23/0x40 [vp_vdpa]
[ 195.025353] pci_device_remove+0x36/0xa0
[ 195.025719] device_release_driver_internal+0x1aa/0x230
[ 195.026201] pci_stop_bus_device+0x6c/0x90
[ 195.026580] pci_stop_and_remove_bus_device+0xe/0x20
[ 195.027039] disable_slot+0x49/0x90
[ 195.027366] acpiphp_disable_and_eject_slot+0x15/0x90
[ 195.027832] hotplug_event+0xea/0x210
[ 195.028171] ? hotplug_event+0x210/0x210
[ 195.028535] acpiphp_hotplug_notify+0x22/0x80
[ 195.028942] ? hotplug_event+0x210/0x210
[ 195.029303] acpi_device_hotplug+0x8a/0x1d0
[ 195.029690] acpi_hotplug_work_fn+0x1a/0x30
[ 195.030077] process_one_work+0x1e8/0x3c0
[ 195.030451] worker_thread+0x50/0x3b0
[ 195.030791] ? rescuer_thread+0x3a0/0x3a0
[ 195.031165] kthread+0xd9/0x100
[ 195.031459] ? kthread_complete_and_exit+0x20/0x20
[ 195.031899] ret_from_fork+0x22/0x30
[ 195.032233] </TASK> |
| In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Use local fence in error path of xe_migrate_clear
The intent of the error path in xe_migrate_clear is to wait on locally
generated fence and then return. The code is waiting on m->fence which
could be the local fence but this is only stable under the job mutex
leading to a possible UAF. Fix code to wait on local fence.
(cherry picked from commit 762b7e95362170b3e13a8704f38d5e47eca4ba74) |
| In the Linux kernel, the following vulnerability has been resolved:
RDMA/core: Silence oversized kvmalloc() warning
syzkaller triggered an oversized kvmalloc() warning.
Silence it by adding __GFP_NOWARN.
syzkaller log:
WARNING: CPU: 7 PID: 518 at mm/util.c:665 __kvmalloc_node_noprof+0x175/0x180
CPU: 7 UID: 0 PID: 518 Comm: c_repro Not tainted 6.11.0-rc6+ #6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
RIP: 0010:__kvmalloc_node_noprof+0x175/0x180
RSP: 0018:ffffc90001e67c10 EFLAGS: 00010246
RAX: 0000000000000100 RBX: 0000000000000400 RCX: ffffffff8149d46b
RDX: 0000000000000000 RSI: ffff8881030fae80 RDI: 0000000000000002
RBP: 000000712c800000 R08: 0000000000000100 R09: 0000000000000000
R10: ffffc90001e67c10 R11: 0030ae0601000000 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000
FS: 00007fde79159740(0000) GS:ffff88813bdc0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000105eb4005 CR4: 00000000003706b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
ib_umem_odp_get+0x1f6/0x390
mlx5_ib_reg_user_mr+0x1e8/0x450
ib_uverbs_reg_mr+0x28b/0x440
ib_uverbs_write+0x7d3/0xa30
vfs_write+0x1ac/0x6c0
ksys_write+0x134/0x170
? __sanitizer_cov_trace_pc+0x1c/0x50
do_syscall_64+0x50/0x110
entry_SYSCALL_64_after_hwframe+0x76/0x7e |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: mpi3mr: Synchronous access b/w reset and tm thread for reply queue
When the task management thread processes reply queues while the reset
thread resets them, the task management thread accesses an invalid queue ID
(0xFFFF), set by the reset thread, which points to unallocated memory,
causing a crash.
Add flag 'io_admin_reset_sync' to synchronize access between the reset,
I/O, and admin threads. Before a reset, the reset handler sets this flag to
block I/O and admin processing threads. If any thread bypasses the initial
check, the reset thread waits up to 10 seconds for processing to finish. If
the wait exceeds 10 seconds, the controller is marked as unrecoverable. |
| In the Linux kernel, the following vulnerability has been resolved:
page_pool: avoid infinite loop to schedule delayed worker
We noticed the kworker in page_pool_release_retry() was waken
up repeatedly and infinitely in production because of the
buggy driver causing the inflight less than 0 and warning
us in page_pool_inflight()[1].
Since the inflight value goes negative, it means we should
not expect the whole page_pool to get back to work normally.
This patch mitigates the adverse effect by not rescheduling
the kworker when detecting the inflight negative in
page_pool_release_retry().
[1]
[Mon Feb 10 20:36:11 2025] ------------[ cut here ]------------
[Mon Feb 10 20:36:11 2025] Negative(-51446) inflight packet-pages
...
[Mon Feb 10 20:36:11 2025] Call Trace:
[Mon Feb 10 20:36:11 2025] page_pool_release_retry+0x23/0x70
[Mon Feb 10 20:36:11 2025] process_one_work+0x1b1/0x370
[Mon Feb 10 20:36:11 2025] worker_thread+0x37/0x3a0
[Mon Feb 10 20:36:11 2025] kthread+0x11a/0x140
[Mon Feb 10 20:36:11 2025] ? process_one_work+0x370/0x370
[Mon Feb 10 20:36:11 2025] ? __kthread_cancel_work+0x40/0x40
[Mon Feb 10 20:36:11 2025] ret_from_fork+0x35/0x40
[Mon Feb 10 20:36:11 2025] ---[ end trace ebffe800f33e7e34 ]---
Note: before this patch, the above calltrace would flood the
dmesg due to repeated reschedule of release_dw kworker. |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Synchronize the IOCB count to be in order
A system hang was observed with the following call trace:
BUG: kernel NULL pointer dereference, address: 0000000000000000
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 15 PID: 86747 Comm: nvme Kdump: loaded Not tainted 6.2.0+ #1
Hardware name: Dell Inc. PowerEdge R6515/04F3CJ, BIOS 2.7.3 03/31/2022
RIP: 0010:__wake_up_common+0x55/0x190
Code: 41 f6 01 04 0f 85 b2 00 00 00 48 8b 43 08 4c 8d
40 e8 48 8d 43 08 48 89 04 24 48 89 c6\
49 8d 40 18 48 39 c6 0f 84 e9 00 00 00 <49> 8b 40 18 89 6c 24 14 31
ed 4c 8d 60 e8 41 8b 18 f6 c3 04 75 5d
RSP: 0018:ffffb05a82afbba0 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff8f9b83a00018 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffff8f9b83a00020 RDI: ffff8f9b83a00018
RBP: 0000000000000001 R08: ffffffffffffffe8 R09: ffffb05a82afbbf8
R10: 70735f7472617473 R11: 5f30307832616c71 R12: 0000000000000001
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f815cf4c740(0000) GS:ffff8f9eeed80000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000010633a000 CR4: 0000000000350ee0
Call Trace:
<TASK>
__wake_up_common_lock+0x83/0xd0
qla_nvme_ls_req+0x21b/0x2b0 [qla2xxx]
__nvme_fc_send_ls_req+0x1b5/0x350 [nvme_fc]
nvme_fc_xmt_disconnect_assoc+0xca/0x110 [nvme_fc]
nvme_fc_delete_association+0x1bf/0x220 [nvme_fc]
? nvme_remove_namespaces+0x9f/0x140 [nvme_core]
nvme_do_delete_ctrl+0x5b/0xa0 [nvme_core]
nvme_sysfs_delete+0x5f/0x70 [nvme_core]
kernfs_fop_write_iter+0x12b/0x1c0
vfs_write+0x2a3/0x3b0
ksys_write+0x5f/0xe0
do_syscall_64+0x5c/0x90
? syscall_exit_work+0x103/0x130
? syscall_exit_to_user_mode+0x12/0x30
? do_syscall_64+0x69/0x90
? exit_to_user_mode_loop+0xd0/0x130
? exit_to_user_mode_prepare+0xec/0x100
? syscall_exit_to_user_mode+0x12/0x30
? do_syscall_64+0x69/0x90
? syscall_exit_to_user_mode+0x12/0x30
? do_syscall_64+0x69/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f815cd3eb97
The IOCB counts are out of order and that would block any commands from
going out and subsequently hang the system. Synchronize the IOCB count to
be in correct order. |
| In the Linux kernel, the following vulnerability has been resolved:
perf/core: Fix perf_output_begin parameter is incorrectly invoked in perf_event_bpf_output
syzkaller reportes a KASAN issue with stack-out-of-bounds.
The call trace is as follows:
dump_stack+0x9c/0xd3
print_address_description.constprop.0+0x19/0x170
__kasan_report.cold+0x6c/0x84
kasan_report+0x3a/0x50
__perf_event_header__init_id+0x34/0x290
perf_event_header__init_id+0x48/0x60
perf_output_begin+0x4a4/0x560
perf_event_bpf_output+0x161/0x1e0
perf_iterate_sb_cpu+0x29e/0x340
perf_iterate_sb+0x4c/0xc0
perf_event_bpf_event+0x194/0x2c0
__bpf_prog_put.constprop.0+0x55/0xf0
__cls_bpf_delete_prog+0xea/0x120 [cls_bpf]
cls_bpf_delete_prog_work+0x1c/0x30 [cls_bpf]
process_one_work+0x3c2/0x730
worker_thread+0x93/0x650
kthread+0x1b8/0x210
ret_from_fork+0x1f/0x30
commit 267fb27352b6 ("perf: Reduce stack usage of perf_output_begin()")
use on-stack struct perf_sample_data of the caller function.
However, perf_event_bpf_output uses incorrect parameter to convert
small-sized data (struct perf_bpf_event) into large-sized data
(struct perf_sample_data), which causes memory overwriting occurs in
__perf_event_header__init_id. |
| In the Linux kernel, the following vulnerability has been resolved:
igc: fix PTM cycle trigger logic
Writing to clear the PTM status 'valid' bit while the PTM cycle is
triggered results in unreliable PTM operation. To fix this, clear the
PTM 'trigger' and status after each PTM transaction.
The issue can be reproduced with the following:
$ sudo phc2sys -R 1000 -O 0 -i tsn0 -m
Note: 1000 Hz (-R 1000) is unrealistically large, but provides a way to
quickly reproduce the issue.
PHC2SYS exits with:
"ioctl PTP_OFFSET_PRECISE: Connection timed out" when the PTM transaction
fails
This patch also fixes a hang in igc_probe() when loading the igc
driver in the kdump kernel on systems supporting PTM.
The igc driver running in the base kernel enables PTM trigger in
igc_probe(). Therefore the driver is always in PTM trigger mode,
except in brief periods when manually triggering a PTM cycle.
When a crash occurs, the NIC is reset while PTM trigger is enabled.
Due to a hardware problem, the NIC is subsequently in a bad busmaster
state and doesn't handle register reads/writes. When running
igc_probe() in the kdump kernel, the first register access to a NIC
register hangs driver probing and ultimately breaks kdump.
With this patch, igc has PTM trigger disabled most of the time,
and the trigger is only enabled for very brief (10 - 100 us) periods
when manually triggering a PTM cycle. Chances that a crash occurs
during a PTM trigger are not 0, but extremely reduced. |
| In the Linux kernel, the following vulnerability has been resolved:
qed/qed_sriov: guard against NULL derefs from qed_iov_get_vf_info
We have to make sure that the info returned by the helper is valid
before using it.
Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool. |
| In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: aspeed: Add NULL pointer check in ast_vhub_init_dev()
The variable d->name, returned by devm_kasprintf(), could be NULL.
A pointer check is added to prevent potential NULL pointer dereference.
This is similar to the fix in commit 3027e7b15b02
("ice: Fix some null pointer dereference issues in ice_ptp.c").
This issue is found by our static analysis tool |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Do not set DRR on pipe Commit
[WHY]
Writing to DRR registers such as OTG_V_TOTAL_MIN on the same frame as a
pipe commit can cause underflow. |
| In the Linux kernel, the following vulnerability has been resolved:
HID: intel-ish-hid: ipc: Fix potential use-after-free in work function
When a reset notify IPC message is received, the ISR schedules a work
function and passes the ISHTP device to it via a global pointer
ishtp_dev. If ish_probe() fails, the devm-managed device resources
including ishtp_dev are freed, but the work is not cancelled, causing a
use-after-free when the work function tries to access ishtp_dev. Use
devm_work_autocancel() instead, so that the work is automatically
cancelled if probe fails. |
