ubi: Fix use-after-free when volume resizing failed
In the Linux kernel, the following vulnerability has been resolved:
ubi: Fix use-after-free when volume resizing failed
There is an use-after-free problem reported by KASAN:
==================================================================
BUG: KASAN: use-after-free in ubi_eba_copy_table+0x11f/0x1c0 [ubi]
Read of size 8 at addr ffff888101eec008 by task ubirsvol/4735
CPU: 2 PID: 4735 Comm: ubirsvol
Not tainted 6.1.0-rc1-00003-g84fa3304a7fc-dirty #14
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.14.0-1.fc33 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x34/0x44
print_report+0x171/0x472
kasan_repor
crypto: api - Use work queue in crypto_destroy_instance
In the Linux kernel, the following vulnerability has been resolved:
crypto: api - Use work queue in crypto_destroy_instance
The function crypto_drop_spawn expects to be called in process
context. However, when an instance is unregistered while it still
has active users, the last user may cause the instance to be freed
in atomic context.
Fix this by delaying the freeing to a work queue.
f2fs: fix information leak in f2fs_move_inline_dirents()
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix information leak in f2fs_move_inline_dirents()
When converting an inline directory to a regular one, f2fs is leaking
uninitialized memory to disk because it doesn't initialize the entire
directory block. Fix this by zero-initializing the block.
This bug was introduced by commit 4ec17d688d74 ("f2fs: avoid unneeded
initializing when converting inline dentry"), which didn't consider the
security implications of leaking uninitialized memory to disk.
This was found by running xfstest generic/435 on a KMSAN-enabled kernel.
cifs: fix session state check in reconnect to avoid use-after-free issue
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix session state check in reconnect to avoid use-after-free issue
Don't collect exiting session in smb2_reconnect_server(), because it
will be released soon.
Note that the exiting session will stay in server->smb_ses_list until
it complete the cifs_free_ipc() and logoff() and then delete itself
from the list.
ALSA: hda/ca0132: fixup buffer overrun at tuning_ctl_set()
In the Linux kernel, the following vulnerability has been resolved:
ALSA: hda/ca0132: fixup buffer overrun at tuning_ctl_set()
tuning_ctl_set() might have buffer overrun at (X) if it didn't break
from loop by matching (A).
static int tuning_ctl_set(...)
{
for (i = 0; i < TUNING_CTLS_COUNT; i++)
(A) if (nid == ca0132_tuning_ctls[i].nid)
break;
snd_hda_power_up(...);
(X) dspio_set_param(..., ca0132_tuning_ctls[i].mid, ...);
snd_hda_power_down(...); ^
return 1;
}
We will get below error by cppcheck
sound/pci/hda/patch_ca0132.c:4229:2: note: After for loop, i has value 12
for (i = 0; i < TUNING_CTLS_COUN
In the Linux kernel, the following vulnerability has been resolved:
dm flakey: fix a crash with invalid table line
This command will crash with NULL pointer dereference:
dmsetup create flakey --table \
"0 `blockdev --getsize /dev/ram0` flakey /dev/ram0 0 0 1 2 corrupt_bio_byte 512"
Fix the crash by checking if arg_name is non-NULL before comparing it.
dccp: Fix out of bounds access in DCCP error handler
In the Linux kernel, the following vulnerability has been resolved:
dccp: Fix out of bounds access in DCCP error handler
There was a previous attempt to fix an out-of-bounds access in the DCCP
error handlers, but that fix assumed that the error handlers only want
to access the first 8 bytes of the DCCP header. Actually, they also look
at the DCCP sequence number, which is stored beyond 8 bytes, so an
explicit pskb_may_pull() is required.
smc: Fix use-after-free in tcp_write_timer_handler().
In the Linux kernel, the following vulnerability has been resolved:
smc: Fix use-after-free in tcp_write_timer_handler().
With Eric's ref tracker, syzbot finally found a repro for
use-after-free in tcp_write_timer_handler() by kernel TCP
sockets. [0]
If SMC creates a kernel socket in __smc_create(), the kernel
socket is supposed to be freed in smc_clcsock_release() by
calling sock_release() when we close() the parent SMC socket.
However, at the end of smc_clcsock_release(), the kernel
socket's sk_state might not be TCP_CLOSE. This means that
we have not called inet_csk_destroy_sock() in __tcp_close()
and have not stopped the TCP timers.
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: fix FCLK pstate change underflow
[Why]
Currently we set FCLK p-state change
watermark calculated based on dummy
p-state latency when UCLK p-state is
not supported
[How]
Calculate FCLK p-state change watermark
based on on FCLK pstate change latency
in case UCLK p-state is not supported
In the Linux kernel, the following vulnerability has been resolved:
nfc: pn533: Clear nfc_target before being used
Fix a slab-out-of-bounds read that occurs in nla_put() called from
nfc_genl_send_target() when target->sensb_res_len, which is duplicated
from an nfc_target in pn533, is too large as the nfc_target is not
properly initialized and retains garbage values. Clear nfc_targets with
memset() before they are used.
Found by a modified version of syzkaller.
BUG: KASAN: slab-out-of-bounds in nla_put
Call Trace:
memcpy
nla_put
nfc_genl_dump_targets
genl_lock_dumpit
netlink_dump
__netlink_dump_start
genl_family_rcv_msg_dumpit
genl
mmc: atmel-mci: fix return value check of mmc_add_host()
In the Linux kernel, the following vulnerability has been resolved:
mmc: atmel-mci: fix return value check of mmc_add_host()
mmc_add_host() may return error, if we ignore its return value,
it will lead two issues:
1. The memory that allocated in mmc_alloc_host() is leaked.
2. In the remove() path, mmc_remove_host() will be called to
delete device, but it's not added yet, it will lead a kernel
crash because of null-ptr-deref in device_del().
So fix this by checking the return value and calling mmc_free_host()
in the error path.
uio: uio_dmem_genirq: Fix missing unlock in irq configuration
In the Linux kernel, the following vulnerability has been resolved:
uio: uio_dmem_genirq: Fix missing unlock in irq configuration
Commit b74351287d4b ("uio: fix a sleep-in-atomic-context bug in
uio_dmem_genirq_irqcontrol()") started calling disable_irq() without
holding the spinlock because it can sleep. However, that fix introduced
another bug: if interrupt is already disabled and a new disable request
comes in, then the spinlock is not unlocked:
root@localhost:~# printf '\x00\x00\x00\x00' > /dev/uio0
root@localhost:~# printf '\x00\x00\x00\x00' > /dev/uio0
root@localhost:~# [ 14.851538] BUG: scheduling while atomic: bash/223/0x00000002
RISC-V: Make port I/O string accessors actually work
In the Linux kernel, the following vulnerability has been resolved:
RISC-V: Make port I/O string accessors actually work
Fix port I/O string accessors such as `insb', `outsb', etc. which use
the physical PCI port I/O address rather than the corresponding memory
mapping to get at the requested location, which in turn breaks at least
accesses made by our parport driver to a PCIe parallel port such as:
PCI parallel port detected: 1415:c118, I/O at 0x1000(0x1008), IRQ 20
parport0: PC-style at 0x1000 (0x1008), irq 20, using FIFO [PCSPP,TRISTATE,COMPAT,EPP,ECP]
causing a memory access fault:
Unable to handle kernel access to user memory withou
scsi: hpsa: Fix possible memory leak in hpsa_init_one()
In the Linux kernel, the following vulnerability has been resolved:
scsi: hpsa: Fix possible memory leak in hpsa_init_one()
The hpda_alloc_ctlr_info() allocates h and its field reply_map. However, in
hpsa_init_one(), if alloc_percpu() failed, the hpsa_init_one() jumps to
clean1 directly, which frees h and leaks the h->reply_map.
Fix by calling hpda_free_ctlr_info() to release h->replay_map and h instead
free h directly.
clk: ti: dra7-atl: Fix reference leak in of_dra7_atl_clk_probe
In the Linux kernel, the following vulnerability has been resolved:
clk: ti: dra7-atl: Fix reference leak in of_dra7_atl_clk_probe
pm_runtime_get_sync() will increment pm usage counter.
Forgetting to putting operation will result in reference leak.
Add missing pm_runtime_put_sync in some error paths.
In the Linux kernel, the following vulnerability has been resolved:
HSI: omap_ssi: Fix refcount leak in ssi_probe
When returning or breaking early from a
for_each_available_child_of_node() loop, we need to explicitly call
of_node_put() on the child node to possibly release the node.
mmc: core: Fix kernel panic when remove non-standard SDIO card
In the Linux kernel, the following vulnerability has been resolved:
mmc: core: Fix kernel panic when remove non-standard SDIO card
SDIO tuple is only allocated for standard SDIO card, especially it causes
memory corruption issues when the non-standard SDIO card has removed, which
is because the card device's reference counter does not increase for it at
sdio_init_func(), but all SDIO card device reference counter gets decreased
at sdio_release_func().
ext4: fix bug_on in __es_tree_search caused by bad boot loader inode
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix bug_on in __es_tree_search caused by bad boot loader inode
We got a issue as fllows:
==================================================================
kernel BUG at fs/ext4/extents_status.c:203!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 945 Comm: cat Not tainted 6.0.0-next-20221007-dirty #349
RIP: 0010:ext4_es_end.isra.0+0x34/0x42
RSP: 0018:ffffc9000143b768 EFLAGS: 00010203
RAX: 0000000000000000 RBX: ffff8881769cd0b8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8fc27cf7 RDI: 00000000ffffffff
RBP: ffff8881769cd0bc R08: 0000000000000000
PCI: Fix pci_device_is_present() for VFs by checking PF
In the Linux kernel, the following vulnerability has been resolved:
PCI: Fix pci_device_is_present() for VFs by checking PF
pci_device_is_present() previously didn't work for VFs because it reads the
Vendor and Device ID, which are 0xffff for VFs, which looks like they
aren't present. Check the PF instead.
Wei Gong reported that if virtio I/O is in progress when the driver is
unbound or "0" is written to /sys/.../sriov_numvfs, the virtio I/O
operation hangs, which may result in output like this:
task:bash state:D stack: 0 pid: 1773 ppid: 1241 flags:0x00004002
Call Trace:
schedule+0x4f/0xc0
blk_mq_freeze_queue_wait+0x69/0xa0
FS: JFS: Check for read-only mounted filesystem in txBegin
In the Linux kernel, the following vulnerability has been resolved:
FS: JFS: Check for read-only mounted filesystem in txBegin
This patch adds a check for read-only mounted filesystem
in txBegin before starting a transaction potentially saving
from NULL pointer deref.