tcp: fix mptcp DSS corruption due to large pmtu xmit
In the Linux kernel, the following vulnerability has been resolved:
tcp: fix mptcp DSS corruption due to large pmtu xmit
Syzkaller was able to trigger a DSS corruption:
TCP: request_sock_subflow_v4: Possible SYN flooding on port [::]:20002. Sending cookies.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5227 at net/mptcp/protocol.c:695 __mptcp_move_skbs_from_subflow+0x20a9/0x21f0 net/mptcp/protocol.c:695
Modules linked in:
CPU: 0 UID: 0 PID: 5227 Comm: syz-executor350 Not tainted 6.11.0-syzkaller-08829-gaf9c191ac2a0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 00
blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race
In the Linux kernel, the following vulnerability has been resolved:
blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race
We're seeing crashes from rq_qos_wake_function that look like this:
BUG: unable to handle page fault for address: ffffafe180a40084
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 100000067 P4D 100000067 PUD 10027c067 PMD 10115d067 PTE 0
Oops: Oops: 0002 [#1] PREEMPT SMP PTI
CPU: 17 UID: 0 PID: 0 Comm: swapper/17 Not tainted 6.12.0-rc3-00013-geca631b8fe80 #11
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuil
parport: Proper fix for array out-of-bounds access
In the Linux kernel, the following vulnerability has been resolved:
parport: Proper fix for array out-of-bounds access
The recent fix for array out-of-bounds accesses replaced sprintf()
calls blindly with snprintf(). However, since snprintf() returns the
would-be-printed size, not the actually output size, the length
calculation can still go over the given limit.
Use scnprintf() instead of snprintf(), which returns the actually
output letters, for addressing the potential out-of-bounds access
properly.
nfc: nci: fix possible NULL pointer dereference in send_acknowledge()
In the Linux kernel, the following vulnerability has been resolved:
nfc: nci: fix possible NULL pointer dereference in send_acknowledge()
Handle memory allocation failure from nci_skb_alloc() (calling
alloc_skb()) to avoid possible NULL pointer dereference.
In the Linux kernel, the following vulnerability has been resolved:
media: pci: cx23885: check cx23885_vdev_init() return
cx23885_vdev_init() can return a NULL pointer, but that pointer
is used in the next line without a check.
Add a NULL pointer check and go to the error unwind if it is NULL.
btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit()
In the Linux kernel, the following vulnerability has been resolved:
btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit()
Syzkaller reported BUG as follows:
BUG: sleeping function called from invalid context at
include/linux/sched/mm.h:274
Call Trace:
<TASK>
dump_stack_lvl+0xcd/0x134
__might_resched.cold+0x222/0x26b
kmem_cache_alloc+0x2e7/0x3c0
update_qgroup_limit_item+0xe1/0x390
btrfs_qgroup_inherit+0x147b/0x1ee0
create_subvol+0x4eb/0x1710
btrfs_mksubvol+0xfe5/0x13f0
__btrfs_ioctl_snap_create+0x2b0/0x430
btrfs_ioctl_snap_create_v2+0x25a/0x520
btrfs_ioctl+0x2a1c/0x5ce0
__
iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw
In the Linux kernel, the following vulnerability has been resolved:
iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw
KASAN report out-of-bounds read as follows:
BUG: KASAN: global-out-of-bounds in afe4404_read_raw+0x2ce/0x380
Read of size 4 at addr ffffffffc00e4658 by task cat/278
Call Trace:
afe4404_read_raw
iio_read_channel_info
dev_attr_show
The buggy address belongs to the variable:
afe4404_channel_leds+0x18/0xffffffffffffe9c0
This issue can be reproduce by singe command:
$ cat /sys/bus/i2c/devices/0-0058/iio\:device0/in_intensity6_raw
The array size of afe4404_channel_leds and afe4404_channel_offdacs
are less t
iio: health: afe4403: Fix oob read in afe4403_read_raw
In the Linux kernel, the following vulnerability has been resolved:
iio: health: afe4403: Fix oob read in afe4403_read_raw
KASAN report out-of-bounds read as follows:
BUG: KASAN: global-out-of-bounds in afe4403_read_raw+0x42e/0x4c0
Read of size 4 at addr ffffffffc02ac638 by task cat/279
Call Trace:
afe4403_read_raw
iio_read_channel_info
dev_attr_show
The buggy address belongs to the variable:
afe4403_channel_leds+0x18/0xffffffffffffe9e0
This issue can be reproduced by singe command:
$ cat /sys/bus/spi/devices/spi0.0/iio\:device0/in_intensity6_raw
The array size of afe4403_channel_leds is less than channels, so access
with chan->a
In the Linux kernel, the following vulnerability has been resolved:
libbpf: Handle size overflow for ringbuf mmap
The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries
will overflow u32 when mapping producer page and data pages. Only
casting max_entries to size_t is not enough, because for 32-bits
application on 64-bits kernel the size of read-only mmap region
also could overflow size_t.
So fixing it by casting the size of read-only mmap region into a __u64
and checking whether or not there will be overflow during mmap.
hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails
Smatch report warning as follows:
drivers/hwmon/ibmpex.c:509 ibmpex_register_bmc() warn:
'&data->list' not removed from list
If ibmpex_find_sensors() fails in ibmpex_register_bmc(), data will
be freed, but data->list will not be removed from driver_data.bmc_data,
then list traversal may cause UAF.
Fix by removeing it from driver_data.bmc_data before free().
ixgbevf: Fix resource leak in ixgbevf_init_module()
In the Linux kernel, the following vulnerability has been resolved:
ixgbevf: Fix resource leak in ixgbevf_init_module()
ixgbevf_init_module() won't destroy the workqueue created by
create_singlethread_workqueue() when pci_register_driver() failed. Add
destroy_workqueue() in fail path to prevent the resource leak.
Similar to the handling of u132_hcd_init in commit f276e002793c
("usb: u132-hcd: fix resource leak")
In the Linux kernel, the following vulnerability has been resolved:
iavf: Fix error handling in iavf_init_module()
The iavf_init_module() won't destroy workqueue when pci_register_driver()
failed. Call destroy_workqueue() when pci_register_driver() failed to
prevent the resource leak.
Similar to the handling of u132_hcd_init in commit f276e002793c
("usb: u132-hcd: fix resource leak")
e100: Fix possible use after free in e100_xmit_prepare
In the Linux kernel, the following vulnerability has been resolved:
e100: Fix possible use after free in e100_xmit_prepare
In e100_xmit_prepare(), if we can't map the skb, then return -ENOMEM, so
e100_xmit_frame() will return NETDEV_TX_BUSY and the upper layer will
resend the skb. But the skb is already freed, which will cause UAF bug
when the upper layer resends the skb.
Remove the harmful free.
net/mlx5e: Fix use-after-free when reverting termination table
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Fix use-after-free when reverting termination table
When having multiple dests with termination tables and second one
or afterwards fails the driver reverts usage of term tables but
doesn't reset the assignment in attr->dests[num_vport_dests].termtbl
which case a use-after-free when releasing the rule.
Fix by resetting the assignment of termtbl to null.
can: m_can: pci: add missing m_can_class_free_dev() in probe/remove methods
In the Linux kernel, the following vulnerability has been resolved:
can: m_can: pci: add missing m_can_class_free_dev() in probe/remove methods
In m_can_pci_remove() and error handling path of m_can_pci_probe(),
m_can_class_free_dev() should be called to free resource allocated by
m_can_class_allocate_dev(), otherwise there will be memleak.
wifi: cfg80211: fix buffer overflow in elem comparison
In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: fix buffer overflow in elem comparison
For vendor elements, the code here assumes that 5 octets
are present without checking. Since the element itself is
already checked to fit, we only need to check the length.
wifi: mac8021: fix possible oob access in ieee80211_get_rate_duration
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac8021: fix possible oob access in ieee80211_get_rate_duration
Fix possible out-of-bound access in ieee80211_get_rate_duration routine
as reported by the following UBSAN report:
UBSAN: array-index-out-of-bounds in net/mac80211/airtime.c:455:47
index 15 is out of range for type 'u16 [12]'
CPU: 2 PID: 217 Comm: kworker/u32:10 Not tainted 6.1.0-060100rc3-generic
Hardware name: Acer Aspire TC-281/Aspire TC-281, BIOS R01-A2 07/18/2017
Workqueue: mt76 mt76u_tx_status_data [mt76_usb]
Call Trace:
<TASK>
show_stack+0x4e/0x61
dump_stack_lvl+0x4a/0x6f
dump_stack+0x10/0x18
In the Linux kernel, the following vulnerability has been resolved:
net: phy: fix null-ptr-deref while probe() failed
I got a null-ptr-deref report as following when doing fault injection test:
BUG: kernel NULL pointer dereference, address: 0000000000000058
Oops: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 PID: 253 Comm: 507-spi-dm9051 Tainted: G B N 6.1.0-rc3+
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
RIP: 0010:klist_put+0x2d/0xd0
Call Trace:
<TASK>
klist_remove+0xf1/0x1c0
device_release_driver_internal+0x23e/0x2d0
bus_remove_device+0x1bd/0x240
device_del+0x357/0x770
phy_device