| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
hv_netvsc: Fix panic during namespace deletion with VF
The existing code move the VF NIC to new namespace when NETDEV_REGISTER is
received on netvsc NIC. During deletion of the namespace,
default_device_exit_batch() >> default_device_exit_net() is called. When
netvsc NIC is moved back and registered to the default namespace, it
automatically brings VF NIC back to the default namespace. This will cause
the default_device_exit_net() >> for_each_netdev_safe loop unable to detect
the list end, and hit NULL ptr:
[ 231.449420] mana 7870:00:00.0 enP30832s1: Moved VF to namespace with: eth0
[ 231.449656] BUG: kernel NULL pointer dereference, address: 0000000000000010
[ 231.450246] #PF: supervisor read access in kernel mode
[ 231.450579] #PF: error_code(0x0000) - not-present page
[ 231.450916] PGD 17b8a8067 P4D 0
[ 231.451163] Oops: Oops: 0000 [#1] SMP NOPTI
[ 231.451450] CPU: 82 UID: 0 PID: 1394 Comm: kworker/u768:1 Not tainted 6.16.0-rc4+ #3 VOLUNTARY
[ 231.452042] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 11/21/2024
[ 231.452692] Workqueue: netns cleanup_net
[ 231.452947] RIP: 0010:default_device_exit_batch+0x16c/0x3f0
[ 231.453326] Code: c0 0c f5 b3 e8 d5 db fe ff 48 85 c0 74 15 48 c7 c2 f8 fd ca b2 be 10 00 00 00 48 8d 7d c0 e8 7b 77 25 00 49 8b 86 28 01 00 00 <48> 8b 50 10 4c 8b 2a 4c 8d 62 f0 49 83 ed 10 4c 39 e0 0f 84 d6 00
[ 231.454294] RSP: 0018:ff75fc7c9bf9fd00 EFLAGS: 00010246
[ 231.454610] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 61c8864680b583eb
[ 231.455094] RDX: ff1fa9f71462d800 RSI: ff75fc7c9bf9fd38 RDI: 0000000030766564
[ 231.455686] RBP: ff75fc7c9bf9fd78 R08: 0000000000000000 R09: 0000000000000000
[ 231.456126] R10: 0000000000000001 R11: 0000000000000004 R12: ff1fa9f70088e340
[ 231.456621] R13: ff1fa9f70088e340 R14: ffffffffb3f50c20 R15: ff1fa9f7103e6340
[ 231.457161] FS: 0000000000000000(0000) GS:ff1faa6783a08000(0000) knlGS:0000000000000000
[ 231.457707] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 231.458031] CR2: 0000000000000010 CR3: 0000000179ab2006 CR4: 0000000000b73ef0
[ 231.458434] Call Trace:
[ 231.458600] <TASK>
[ 231.458777] ops_undo_list+0x100/0x220
[ 231.459015] cleanup_net+0x1b8/0x300
[ 231.459285] process_one_work+0x184/0x340
To fix it, move the ns change to a workqueue, and take rtnl_lock to avoid
changing the netdev list when default_device_exit_net() is using it. |
| In the Linux kernel, the following vulnerability has been resolved:
mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd()
Memory hot remove unmaps and tears down various kernel page table regions
as required. The ptdump code can race with concurrent modifications of
the kernel page tables. When leaf entries are modified concurrently, the
dump code may log stale or inconsistent information for a VA range, but
this is otherwise not harmful.
But when intermediate levels of kernel page table are freed, the dump code
will continue to use memory that has been freed and potentially
reallocated for another purpose. In such cases, the ptdump code may
dereference bogus addresses, leading to a number of potential problems.
To avoid the above mentioned race condition, platforms such as arm64,
riscv and s390 take memory hotplug lock, while dumping kernel page table
via the sysfs interface /sys/kernel/debug/kernel_page_tables.
Similar race condition exists while checking for pages that might have
been marked W+X via /sys/kernel/debug/kernel_page_tables/check_wx_pages
which in turn calls ptdump_check_wx(). Instead of solving this race
condition again, let's just move the memory hotplug lock inside generic
ptdump_check_wx() which will benefit both the scenarios.
Drop get_online_mems() and put_online_mems() combination from all existing
platform ptdump code paths. |
| In the Linux kernel, the following vulnerability has been resolved:
media: uvcvideo: Fix 1-byte out-of-bounds read in uvc_parse_format()
The buffer length check before calling uvc_parse_format() only ensured
that the buffer has at least 3 bytes (buflen > 2), buf the function
accesses buffer[3], requiring at least 4 bytes.
This can lead to an out-of-bounds read if the buffer has exactly 3 bytes.
Fix it by checking that the buffer has at least 4 bytes in
uvc_parse_format(). |
| In the Linux kernel, the following vulnerability has been resolved:
iommu/amd: Avoid stack buffer overflow from kernel cmdline
While the kernel command line is considered trusted in most environments,
avoid writing 1 byte past the end of "acpiid" if the "str" argument is
maximum length. |
| In the Linux kernel, the following vulnerability has been resolved:
i2c: qup: jump out of the loop in case of timeout
Original logic only sets the return value but doesn't jump out of the
loop if the bus is kept active by a client. This is not expected. A
malicious or buggy i2c client can hang the kernel in this case and
should be avoided. This is observed during a long time test with a
PCA953x GPIO extender.
Fix it by changing the logic to not only sets the return value, but also
jumps out of the loop and return to the caller with -ETIMEDOUT. |
| In the Linux kernel, the following vulnerability has been resolved:
regulator: core: fix NULL dereference on unbind due to stale coupling data
Failing to reset coupling_desc.n_coupled after freeing coupled_rdevs can
lead to NULL pointer dereference when regulators are accessed post-unbind.
This can happen during runtime PM or other regulator operations that rely
on coupling metadata.
For example, on ridesx4, unbinding the 'reg-dummy' platform device triggers
a panic in regulator_lock_recursive() due to stale coupling state.
Ensure n_coupled is set to 0 to prevent access to invalid pointers. |
| In the Linux kernel, the following vulnerability has been resolved:
can: netlink: can_changelink(): fix NULL pointer deref of struct can_priv::do_set_mode
Andrei Lalaev reported a NULL pointer deref when a CAN device is
restarted from Bus Off and the driver does not implement the struct
can_priv::do_set_mode callback.
There are 2 code path that call struct can_priv::do_set_mode:
- directly by a manual restart from the user space, via
can_changelink()
- delayed automatic restart after bus off (deactivated by default)
To prevent the NULL pointer deference, refuse a manual restart or
configure the automatic restart delay in can_changelink() and report
the error via extack to user space.
As an additional safety measure let can_restart() return an error if
can_priv::do_set_mode is not set instead of dereferencing it
unchecked. |
| In the Linux kernel, the following vulnerability has been resolved:
ice: Fix a null pointer dereference in ice_copy_and_init_pkg()
Add check for the return value of devm_kmemdup()
to prevent potential null pointer dereference. |
| In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: Check device memory pointer before usage
Add a NULL check before accessing device memory to prevent a crash if
dev->dm allocation in mlx5_init_once() fails. |
| In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: reject TDLS operations when station is not associated
syzbot triggered a WARN in ieee80211_tdls_oper() by sending
NL80211_TDLS_ENABLE_LINK immediately after NL80211_CMD_CONNECT,
before association completed and without prior TDLS setup.
This left internal state like sdata->u.mgd.tdls_peer uninitialized,
leading to a WARN_ON() in code paths that assumed it was valid.
Reject the operation early if not in station mode or not associated. |
| In the Linux kernel, the following vulnerability has been resolved:
PCI: pnv_php: Clean up allocated IRQs on unplug
When the root of a nested PCIe bridge configuration is unplugged, the
pnv_php driver leaked the allocated IRQ resources for the child bridges'
hotplug event notifications, resulting in a panic.
Fix this by walking all child buses and deallocating all its IRQ resources
before calling pci_hp_remove_devices().
Also modify the lifetime of the workqueue at struct pnv_php_slot::wq so
that it is only destroyed in pnv_php_free_slot(), instead of
pnv_php_disable_irq(). This is required since pnv_php_disable_irq() will
now be called by workers triggered by hot unplug interrupts, so the
workqueue needs to stay allocated.
The abridged kernel panic that occurs without this patch is as follows:
WARNING: CPU: 0 PID: 687 at kernel/irq/msi.c:292 msi_device_data_release+0x6c/0x9c
CPU: 0 UID: 0 PID: 687 Comm: bash Not tainted 6.14.0-rc5+ #2
Call Trace:
msi_device_data_release+0x34/0x9c (unreliable)
release_nodes+0x64/0x13c
devres_release_all+0xc0/0x140
device_del+0x2d4/0x46c
pci_destroy_dev+0x5c/0x194
pci_hp_remove_devices+0x90/0x128
pci_hp_remove_devices+0x44/0x128
pnv_php_disable_slot+0x54/0xd4
power_write_file+0xf8/0x18c
pci_slot_attr_store+0x40/0x5c
sysfs_kf_write+0x64/0x78
kernfs_fop_write_iter+0x1b0/0x290
vfs_write+0x3bc/0x50c
ksys_write+0x84/0x140
system_call_exception+0x124/0x230
system_call_vectored_common+0x15c/0x2ec
[bhelgaas: tidy comments] |
| In the Linux kernel, the following vulnerability has been resolved:
PCI: pnv_php: Fix surprise plug detection and recovery
The existing PowerNV hotplug code did not handle surprise plug events
correctly, leading to a complete failure of the hotplug system after device
removal and a required reboot to detect new devices.
This comes down to two issues:
1) When a device is surprise removed, often the bridge upstream
port will cause a PE freeze on the PHB. If this freeze is not
cleared, the MSI interrupts from the bridge hotplug notification
logic will not be received by the kernel, stalling all plug events
on all slots associated with the PE.
2) When a device is removed from a slot, regardless of surprise or
programmatic removal, the associated PHB/PE ls left frozen.
If this freeze is not cleared via a fundamental reset, skiboot
is unable to clear the freeze and cannot retrain / rescan the
slot. This also requires a reboot to clear the freeze and redetect
the device in the slot.
Issue the appropriate unfreeze and rescan commands on hotplug events,
and don't oops on hotplug if pci_bus_to_OF_node() returns NULL.
[bhelgaas: tidy comments] |
| In the Linux kernel, the following vulnerability has been resolved:
net: drop UFO packets in udp_rcv_segment()
When sending a packet with virtio_net_hdr to tun device, if the gso_type
in virtio_net_hdr is SKB_GSO_UDP and the gso_size is less than udphdr
size, below crash may happen.
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:4572!
Oops: invalid opcode: 0000 [#1] SMP NOPTI
CPU: 0 UID: 0 PID: 62 Comm: mytest Not tainted 6.16.0-rc7 #203 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
RIP: 0010:skb_pull_rcsum+0x8e/0xa0
Code: 00 00 5b c3 cc cc cc cc 8b 93 88 00 00 00 f7 da e8 37 44 38 00 f7 d8 89 83 88 00 00 00 48 8b 83 c8 00 00 00 5b c3 cc cc cc cc <0f> 0b 0f 0b 66 66 2e 0f 1f 84 00 000
RSP: 0018:ffffc900001fba38 EFLAGS: 00000297
RAX: 0000000000000004 RBX: ffff8880040c1000 RCX: ffffc900001fb948
RDX: ffff888003e6d700 RSI: 0000000000000008 RDI: ffff88800411a062
RBP: ffff8880040c1000 R08: 0000000000000000 R09: 0000000000000001
R10: ffff888003606c00 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888004060900 R14: ffff888004050000 R15: ffff888004060900
FS: 000000002406d3c0(0000) GS:ffff888084a19000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 0000000004007000 CR4: 00000000000006f0
Call Trace:
<TASK>
udp_queue_rcv_one_skb+0x176/0x4b0 net/ipv4/udp.c:2445
udp_queue_rcv_skb+0x155/0x1f0 net/ipv4/udp.c:2475
udp_unicast_rcv_skb+0x71/0x90 net/ipv4/udp.c:2626
__udp4_lib_rcv+0x433/0xb00 net/ipv4/udp.c:2690
ip_protocol_deliver_rcu+0xa6/0x160 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x72/0x90 net/ipv4/ip_input.c:233
ip_sublist_rcv_finish+0x5f/0x70 net/ipv4/ip_input.c:579
ip_sublist_rcv+0x122/0x1b0 net/ipv4/ip_input.c:636
ip_list_rcv+0xf7/0x130 net/ipv4/ip_input.c:670
__netif_receive_skb_list_core+0x21d/0x240 net/core/dev.c:6067
netif_receive_skb_list_internal+0x186/0x2b0 net/core/dev.c:6210
napi_complete_done+0x78/0x180 net/core/dev.c:6580
tun_get_user+0xa63/0x1120 drivers/net/tun.c:1909
tun_chr_write_iter+0x65/0xb0 drivers/net/tun.c:1984
vfs_write+0x300/0x420 fs/read_write.c:593
ksys_write+0x60/0xd0 fs/read_write.c:686
do_syscall_64+0x50/0x1c0 arch/x86/entry/syscall_64.c:63
</TASK>
To trigger gso segment in udp_queue_rcv_skb(), we should also set option
UDP_ENCAP_ESPINUDP to enable udp_sk(sk)->encap_rcv. When the encap_rcv
hook return 1 in udp_queue_rcv_one_skb(), udp_csum_pull_header() will try
to pull udphdr, but the skb size has been segmented to gso size, which
leads to this crash.
Previous commit cf329aa42b66 ("udp: cope with UDP GRO packet misdirection")
introduces segmentation in UDP receive path only for GRO, which was never
intended to be used for UFO, so drop UFO packets in udp_rcv_segment(). |
| In the Linux kernel, the following vulnerability has been resolved:
PM / devfreq: Check governor before using governor->name
Commit 96ffcdf239de ("PM / devfreq: Remove redundant governor_name from
struct devfreq") removes governor_name and uses governor->name to replace
it. But devfreq->governor may be NULL and directly using
devfreq->governor->name may cause null pointer exception. Move the check of
governor to before using governor->name. |
| In the Linux kernel, the following vulnerability has been resolved:
iwlwifi: Add missing check for alloc_ordered_workqueue
Add check for the return value of alloc_ordered_workqueue since it may
return NULL pointer. |
| In the Linux kernel, the following vulnerability has been resolved:
ipv6: prevent infinite loop in rt6_nlmsg_size()
While testing prior patch, I was able to trigger
an infinite loop in rt6_nlmsg_size() in the following place:
list_for_each_entry_rcu(sibling, &f6i->fib6_siblings,
fib6_siblings) {
rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len);
}
This is because fib6_del_route() and fib6_add_rt2node()
uses list_del_rcu(), which can confuse rcu readers,
because they might no longer see the head of the list.
Restart the loop if f6i->fib6_nsiblings is zero. |
| In the Linux kernel, the following vulnerability has been resolved:
ipv6: fix possible infinite loop in fib6_info_uses_dev()
fib6_info_uses_dev() seems to rely on RCU without an explicit
protection.
Like the prior fix in rt6_nlmsg_size(),
we need to make sure fib6_del_route() or fib6_add_rt2node()
have not removed the anchor from the list, or we risk an infinite loop. |
| In the Linux kernel, the following vulnerability has been resolved:
crypto: ccp - Fix crash when rebind ccp device for ccp.ko
When CONFIG_CRYPTO_DEV_CCP_DEBUGFS is enabled, rebinding
the ccp device causes the following crash:
$ echo '0000:0a:00.2' > /sys/bus/pci/drivers/ccp/unbind
$ echo '0000:0a:00.2' > /sys/bus/pci/drivers/ccp/bind
[ 204.976930] BUG: kernel NULL pointer dereference, address: 0000000000000098
[ 204.978026] #PF: supervisor write access in kernel mode
[ 204.979126] #PF: error_code(0x0002) - not-present page
[ 204.980226] PGD 0 P4D 0
[ 204.981317] Oops: Oops: 0002 [#1] SMP NOPTI
...
[ 204.997852] Call Trace:
[ 204.999074] <TASK>
[ 205.000297] start_creating+0x9f/0x1c0
[ 205.001533] debugfs_create_dir+0x1f/0x170
[ 205.002769] ? srso_return_thunk+0x5/0x5f
[ 205.004000] ccp5_debugfs_setup+0x87/0x170 [ccp]
[ 205.005241] ccp5_init+0x8b2/0x960 [ccp]
[ 205.006469] ccp_dev_init+0xd4/0x150 [ccp]
[ 205.007709] sp_init+0x5f/0x80 [ccp]
[ 205.008942] sp_pci_probe+0x283/0x2e0 [ccp]
[ 205.010165] ? srso_return_thunk+0x5/0x5f
[ 205.011376] local_pci_probe+0x4f/0xb0
[ 205.012584] pci_device_probe+0xdb/0x230
[ 205.013810] really_probe+0xed/0x380
[ 205.015024] __driver_probe_device+0x7e/0x160
[ 205.016240] device_driver_attach+0x2f/0x60
[ 205.017457] bind_store+0x7c/0xb0
[ 205.018663] drv_attr_store+0x28/0x40
[ 205.019868] sysfs_kf_write+0x5f/0x70
[ 205.021065] kernfs_fop_write_iter+0x145/0x1d0
[ 205.022267] vfs_write+0x308/0x440
[ 205.023453] ksys_write+0x6d/0xe0
[ 205.024616] __x64_sys_write+0x1e/0x30
[ 205.025778] x64_sys_call+0x16ba/0x2150
[ 205.026942] do_syscall_64+0x56/0x1e0
[ 205.028108] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 205.029276] RIP: 0033:0x7fbc36f10104
[ 205.030420] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 e1 08 2e 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 41 54 55 49 89 d4 53 48 89 f5
This patch sets ccp_debugfs_dir to NULL after destroying it in
ccp5_debugfs_destroy, allowing the directory dentry to be
recreated when rebinding the ccp device.
Tested on AMD Ryzen 7 1700X. |
| In the Linux kernel, the following vulnerability has been resolved:
powerpc/eeh: Make EEH driver device hotplug safe
Multiple race conditions existed between the PCIe hotplug driver and the
EEH driver, leading to a variety of kernel oopses of the same general
nature:
<pcie device unplug>
<eeh driver trigger>
<hotplug removal trigger>
<pcie tree reconfiguration>
<eeh recovery next step>
<oops in EEH driver bus iteration loop>
A second class of oops is also seen when the underlying bus disappears
during device recovery.
Refactor the EEH module to be PCI rescan and remove safe. Also clean
up a few minor formatting / readability issues. |
| In the Linux kernel, the following vulnerability has been resolved:
benet: fix BUG when creating VFs
benet crashes as soon as SRIOV VFs are created:
kernel BUG at mm/vmalloc.c:3457!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 4 UID: 0 PID: 7408 Comm: test.sh Kdump: loaded Not tainted 6.16.0+ #1 PREEMPT(voluntary)
[...]
RIP: 0010:vunmap+0x5f/0x70
[...]
Call Trace:
<TASK>
__iommu_dma_free+0xe8/0x1c0
be_cmd_set_mac_list+0x3fe/0x640 [be2net]
be_cmd_set_mac+0xaf/0x110 [be2net]
be_vf_eth_addr_config+0x19f/0x330 [be2net]
be_vf_setup+0x4f7/0x990 [be2net]
be_pci_sriov_configure+0x3a1/0x470 [be2net]
sriov_numvfs_store+0x20b/0x380
kernfs_fop_write_iter+0x354/0x530
vfs_write+0x9b9/0xf60
ksys_write+0xf3/0x1d0
do_syscall_64+0x8c/0x3d0
be_cmd_set_mac_list() calls dma_free_coherent() under a spin_lock_bh.
Fix it by freeing only after the lock has been released. |
