| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: udc: fix use-after-free in usb_gadget_state_work
A race condition during gadget teardown can lead to a use-after-free
in usb_gadget_state_work(), as reported by KASAN:
BUG: KASAN: invalid-access in sysfs_notify+0x2c/0xd0
Workqueue: events usb_gadget_state_work
The fundamental race occurs because a concurrent event (e.g., an
interrupt) can call usb_gadget_set_state() and schedule gadget->work
at any time during the cleanup process in usb_del_gadget().
Commit 399a45e5237c ("usb: gadget: core: flush gadget workqueue after
device removal") attempted to fix this by moving flush_work() to after
device_del(). However, this does not fully solve the race, as a new
work item can still be scheduled *after* flush_work() completes but
before the gadget's memory is freed, leading to the same use-after-free.
This patch fixes the race condition robustly by introducing a 'teardown'
flag and a 'state_lock' spinlock to the usb_gadget struct. The flag is
set during cleanup in usb_del_gadget() *before* calling flush_work() to
prevent any new work from being scheduled once cleanup has commenced.
The scheduling site, usb_gadget_set_state(), now checks this flag under
the lock before queueing the work, thus safely closing the race window. |
| In the Linux kernel, the following vulnerability has been resolved:
ntfs3: pretend $Extend records as regular files
Since commit af153bb63a33 ("vfs: catch invalid modes in may_open()")
requires any inode be one of S_IFDIR/S_IFLNK/S_IFREG/S_IFCHR/S_IFBLK/
S_IFIFO/S_IFSOCK type, use S_IFREG for $Extend records. |
| In the Linux kernel, the following vulnerability has been resolved:
usb: storage: Fix memory leak in USB bulk transport
A kernel memory leak was identified by the 'ioctl_sg01' test from Linux
Test Project (LTP). The following bytes were mainly observed: 0x53425355.
When USB storage devices incorrectly skip the data phase with status data,
the code extracts/validates the CSW from the sg buffer, but fails to clear
it afterwards. This leaves status protocol data in srb's transfer buffer,
such as the US_BULK_CS_SIGN 'USBS' signature observed here. Thus, this can
lead to USB protocols leaks to user space through SCSI generic (/dev/sg*)
interfaces, such as the one seen here when the LTP test requested 512 KiB.
Fix the leak by zeroing the CSW data in srb's transfer buffer immediately
after the validation of devices that skip data phase.
Note: Differently from CVE-2018-1000204, which fixed a big leak by zero-
ing pages at allocation time, this leak occurs after allocation, when USB
protocol data is written to already-allocated sg pages. |
| In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: f_eem: Fix memory leak in eem_unwrap
The existing code did not handle the failure case of usb_ep_queue in the
command path, potentially leading to memory leaks.
Improve error handling to free all allocated resources on usb_ep_queue
failure. This patch continues to use goto logic for error handling, as the
existing error handling is complex and not easily adaptable to auto-cleanup
helpers.
kmemleak results:
unreferenced object 0xffffff895a512300 (size 240):
backtrace:
slab_post_alloc_hook+0xbc/0x3a4
kmem_cache_alloc+0x1b4/0x358
skb_clone+0x90/0xd8
eem_unwrap+0x1cc/0x36c
unreferenced object 0xffffff8a157f4000 (size 256):
backtrace:
slab_post_alloc_hook+0xbc/0x3a4
__kmem_cache_alloc_node+0x1b4/0x2dc
kmalloc_trace+0x48/0x140
dwc3_gadget_ep_alloc_request+0x58/0x11c
usb_ep_alloc_request+0x40/0xe4
eem_unwrap+0x204/0x36c
unreferenced object 0xffffff8aadbaac00 (size 128):
backtrace:
slab_post_alloc_hook+0xbc/0x3a4
__kmem_cache_alloc_node+0x1b4/0x2dc
__kmalloc+0x64/0x1a8
eem_unwrap+0x218/0x36c
unreferenced object 0xffffff89ccef3500 (size 64):
backtrace:
slab_post_alloc_hook+0xbc/0x3a4
__kmem_cache_alloc_node+0x1b4/0x2dc
kmalloc_trace+0x48/0x140
eem_unwrap+0x238/0x36c |
| In the Linux kernel, the following vulnerability has been resolved:
most: usb: fix double free on late probe failure
The MOST subsystem has a non-standard registration function which frees
the interface on registration failures and on deregistration.
This unsurprisingly leads to bugs in the MOST drivers, and a couple of
recent changes turned a reference underflow and use-after-free in the
USB driver into several double free and a use-after-free on late probe
failures. |
| In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd
In snd_usb_create_streams(), for UAC version 3 devices, the Interface
Association Descriptor (IAD) is retrieved via usb_ifnum_to_if(). If this
call fails, a fallback routine attempts to obtain the IAD from the next
interface and sets a BADD profile. However, snd_usb_mixer_controls_badd()
assumes that the IAD retrieved from usb_ifnum_to_if() is always valid,
without performing a NULL check. This can lead to a NULL pointer
dereference when usb_ifnum_to_if() fails to find the interface descriptor.
This patch adds a NULL pointer check after calling usb_ifnum_to_if() in
snd_usb_mixer_controls_badd() to prevent the dereference.
This issue was discovered by syzkaller, which triggered the bug by sending
a crafted USB device descriptor. |
| In the Linux kernel, the following vulnerability has been resolved:
mm/memfd: fix information leak in hugetlb folios
When allocating hugetlb folios for memfd, three initialization steps are
missing:
1. Folios are not zeroed, leading to kernel memory disclosure to userspace
2. Folios are not marked uptodate before adding to page cache
3. hugetlb_fault_mutex is not taken before hugetlb_add_to_page_cache()
The memfd allocation path bypasses the normal page fault handler
(hugetlb_no_page) which would handle all of these initialization steps.
This is problematic especially for udmabuf use cases where folios are
pinned and directly accessed by userspace via DMA.
Fix by matching the initialization pattern used in hugetlb_no_page():
- Zero the folio using folio_zero_user() which is optimized for huge pages
- Mark it uptodate with folio_mark_uptodate()
- Take hugetlb_fault_mutex before adding to page cache to prevent races
The folio_zero_user() change also fixes a potential security issue where
uninitialized kernel memory could be disclosed to userspace through read()
or mmap() operations on the memfd. |
| In the Linux kernel, the following vulnerability has been resolved:
mm/huge_memory: fix NULL pointer deference when splitting folio
Commit c010d47f107f ("mm: thp: split huge page to any lower order pages")
introduced an early check on the folio's order via mapping->flags before
proceeding with the split work.
This check introduced a bug: for shmem folios in the swap cache and
truncated folios, the mapping pointer can be NULL. Accessing
mapping->flags in this state leads directly to a NULL pointer dereference.
This commit fixes the issue by moving the check for mapping != NULL before
any attempt to access mapping->flags. |
| In the Linux kernel, the following vulnerability has been resolved:
ceph: fix crash in process_v2_sparse_read() for encrypted directories
The crash in process_v2_sparse_read() for fscrypt-encrypted directories
has been reported. Issue takes place for Ceph msgr2 protocol in secure
mode. It can be reproduced by the steps:
sudo mount -t ceph :/ /mnt/cephfs/ -o name=admin,fs=cephfs,ms_mode=secure
(1) mkdir /mnt/cephfs/fscrypt-test-3
(2) cp area_decrypted.tar /mnt/cephfs/fscrypt-test-3
(3) fscrypt encrypt --source=raw_key --key=./my.key /mnt/cephfs/fscrypt-test-3
(4) fscrypt lock /mnt/cephfs/fscrypt-test-3
(5) fscrypt unlock --key=my.key /mnt/cephfs/fscrypt-test-3
(6) cat /mnt/cephfs/fscrypt-test-3/area_decrypted.tar
(7) Issue has been triggered
[ 408.072247] ------------[ cut here ]------------
[ 408.072251] WARNING: CPU: 1 PID: 392 at net/ceph/messenger_v2.c:865
ceph_con_v2_try_read+0x4b39/0x72f0
[ 408.072267] Modules linked in: intel_rapl_msr intel_rapl_common
intel_uncore_frequency_common intel_pmc_core pmt_telemetry pmt_discovery
pmt_class intel_pmc_ssram_telemetry intel_vsec kvm_intel joydev kvm irqbypass
polyval_clmulni ghash_clmulni_intel aesni_intel rapl input_leds psmouse
serio_raw i2c_piix4 vga16fb bochs vgastate i2c_smbus floppy mac_hid qemu_fw_cfg
pata_acpi sch_fq_codel rbd msr parport_pc ppdev lp parport efi_pstore
[ 408.072304] CPU: 1 UID: 0 PID: 392 Comm: kworker/1:3 Not tainted 6.17.0-rc7+
[ 408.072307] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.17.0-5.fc42 04/01/2014
[ 408.072310] Workqueue: ceph-msgr ceph_con_workfn
[ 408.072314] RIP: 0010:ceph_con_v2_try_read+0x4b39/0x72f0
[ 408.072317] Code: c7 c1 20 f0 d4 ae 50 31 d2 48 c7 c6 60 27 d5 ae 48 c7 c7 f8
8e 6f b0 68 60 38 d5 ae e8 00 47 61 fe 48 83 c4 18 e9 ac fc ff ff <0f> 0b e9 06
fe ff ff 4c 8b 9d 98 fd ff ff 0f 84 64 e7 ff ff 89 85
[ 408.072319] RSP: 0018:ffff88811c3e7a30 EFLAGS: 00010246
[ 408.072322] RAX: ffffed1024874c6f RBX: ffffea00042c2b40 RCX: 0000000000000f38
[ 408.072324] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 408.072325] RBP: ffff88811c3e7ca8 R08: 0000000000000000 R09: 00000000000000c8
[ 408.072326] R10: 00000000000000c8 R11: 0000000000000000 R12: 00000000000000c8
[ 408.072327] R13: dffffc0000000000 R14: ffff8881243a6030 R15: 0000000000003000
[ 408.072329] FS: 0000000000000000(0000) GS:ffff88823eadf000(0000)
knlGS:0000000000000000
[ 408.072331] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 408.072332] CR2: 000000c0003c6000 CR3: 000000010c106005 CR4: 0000000000772ef0
[ 408.072336] PKRU: 55555554
[ 408.072337] Call Trace:
[ 408.072338] <TASK>
[ 408.072340] ? sched_clock_noinstr+0x9/0x10
[ 408.072344] ? __pfx_ceph_con_v2_try_read+0x10/0x10
[ 408.072347] ? _raw_spin_unlock+0xe/0x40
[ 408.072349] ? finish_task_switch.isra.0+0x15d/0x830
[ 408.072353] ? __kasan_check_write+0x14/0x30
[ 408.072357] ? mutex_lock+0x84/0xe0
[ 408.072359] ? __pfx_mutex_lock+0x10/0x10
[ 408.072361] ceph_con_workfn+0x27e/0x10e0
[ 408.072364] ? metric_delayed_work+0x311/0x2c50
[ 408.072367] process_one_work+0x611/0xe20
[ 408.072371] ? __kasan_check_write+0x14/0x30
[ 408.072373] worker_thread+0x7e3/0x1580
[ 408.072375] ? __pfx__raw_spin_lock_irqsave+0x10/0x10
[ 408.072378] ? __pfx_worker_thread+0x10/0x10
[ 408.072381] kthread+0x381/0x7a0
[ 408.072383] ? __pfx__raw_spin_lock_irq+0x10/0x10
[ 408.072385] ? __pfx_kthread+0x10/0x10
[ 408.072387] ? __kasan_check_write+0x14/0x30
[ 408.072389] ? recalc_sigpending+0x160/0x220
[ 408.072392] ? _raw_spin_unlock_irq+0xe/0x50
[ 408.072394] ? calculate_sigpending+0x78/0xb0
[ 408.072395] ? __pfx_kthread+0x10/0x10
[ 408.072397] ret_from_fork+0x2b6/0x380
[ 408.072400] ? __pfx_kthread+0x10/0x10
[ 408.072402] ret_from_fork_asm+0x1a/0x30
[ 408.072406] </TASK>
[ 408.072407] ---[ end trace 0000000000000000 ]---
[ 408.072418] Oops: general protection fault, probably for non-canonical
address 0xdffffc00000000
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btusb: mediatek: Avoid btusb_mtk_claim_iso_intf() NULL deref
In btusb_mtk_setup(), we set `btmtk_data->isopkt_intf` to:
usb_ifnum_to_if(data->udev, MTK_ISO_IFNUM)
That function can return NULL in some cases. Even when it returns
NULL, though, we still go on to call btusb_mtk_claim_iso_intf().
As of commit e9087e828827 ("Bluetooth: btusb: mediatek: Add locks for
usb_driver_claim_interface()"), calling btusb_mtk_claim_iso_intf()
when `btmtk_data->isopkt_intf` is NULL will cause a crash because
we'll end up passing a bad pointer to device_lock(). Prior to that
commit we'd pass the NULL pointer directly to
usb_driver_claim_interface() which would detect it and return an
error, which was handled.
Resolve the crash in btusb_mtk_claim_iso_intf() by adding a NULL check
at the start of the function. This makes the code handle a NULL
`btmtk_data->isopkt_intf` the same way it did before the problematic
commit (just with a slight change to the error message printed). |
| In the Linux kernel, the following vulnerability has been resolved:
fs/namespace: fix reference leak in grab_requested_mnt_ns
lookup_mnt_ns() already takes a reference on mnt_ns.
grab_requested_mnt_ns() doesn't need to take an extra reference. |
| In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btusb: mediatek: Fix kernel crash when releasing mtk iso interface
When performing reset tests and encountering abnormal card drop issues
that lead to a kernel crash, it is necessary to perform a null check
before releasing resources to avoid attempting to release a null pointer.
<4>[ 29.158070] Hardware name: Google Quigon sku196612/196613 board (DT)
<4>[ 29.158076] Workqueue: hci0 hci_cmd_sync_work [bluetooth]
<4>[ 29.158154] pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
<4>[ 29.158162] pc : klist_remove+0x90/0x158
<4>[ 29.158174] lr : klist_remove+0x88/0x158
<4>[ 29.158180] sp : ffffffc0846b3c00
<4>[ 29.158185] pmr_save: 000000e0
<4>[ 29.158188] x29: ffffffc0846b3c30 x28: ffffff80cd31f880 x27: ffffff80c1bdc058
<4>[ 29.158199] x26: dead000000000100 x25: ffffffdbdc624ea3 x24: ffffff80c1bdc4c0
<4>[ 29.158209] x23: ffffffdbdc62a3e6 x22: ffffff80c6c07000 x21: ffffffdbdc829290
<4>[ 29.158219] x20: 0000000000000000 x19: ffffff80cd3e0648 x18: 000000031ec97781
<4>[ 29.158229] x17: ffffff80c1bdc4a8 x16: ffffffdc10576548 x15: ffffff80c1180428
<4>[ 29.158238] x14: 0000000000000000 x13: 000000000000e380 x12: 0000000000000018
<4>[ 29.158248] x11: ffffff80c2a7fd10 x10: 0000000000000000 x9 : 0000000100000000
<4>[ 29.158257] x8 : 0000000000000000 x7 : 7f7f7f7f7f7f7f7f x6 : 2d7223ff6364626d
<4>[ 29.158266] x5 : 0000008000000000 x4 : 0000000000000020 x3 : 2e7325006465636e
<4>[ 29.158275] x2 : ffffffdc11afeff8 x1 : 0000000000000000 x0 : ffffffdc11be4d0c
<4>[ 29.158285] Call trace:
<4>[ 29.158290] klist_remove+0x90/0x158
<4>[ 29.158298] device_release_driver_internal+0x20c/0x268
<4>[ 29.158308] device_release_driver+0x1c/0x30
<4>[ 29.158316] usb_driver_release_interface+0x70/0x88
<4>[ 29.158325] btusb_mtk_release_iso_intf+0x68/0xd8 [btusb (HASH:e8b6 5)]
<4>[ 29.158347] btusb_mtk_reset+0x5c/0x480 [btusb (HASH:e8b6 5)]
<4>[ 29.158361] hci_cmd_sync_work+0x10c/0x188 [bluetooth (HASH:a4fa 6)]
<4>[ 29.158430] process_scheduled_works+0x258/0x4e8
<4>[ 29.158441] worker_thread+0x300/0x428
<4>[ 29.158448] kthread+0x108/0x1d0
<4>[ 29.158455] ret_from_fork+0x10/0x20
<0>[ 29.158467] Code: 91343000 940139d1 f9400268 927ff914 (f9401297)
<4>[ 29.158474] ---[ end trace 0000000000000000 ]---
<0>[ 29.167129] Kernel panic - not syncing: Oops: Fatal exception
<2>[ 29.167144] SMP: stopping secondary CPUs
<4>[ 29.167158] ------------[ cut here ]------------ |
| In the Linux kernel, the following vulnerability has been resolved:
can: kvaser_usb: leaf: Fix potential infinite loop in command parsers
The `kvaser_usb_leaf_wait_cmd()` and `kvaser_usb_leaf_read_bulk_callback`
functions contain logic to zero-length commands. These commands are used
to align data to the USB endpoint's wMaxPacketSize boundary.
The driver attempts to skip these placeholders by aligning the buffer
position `pos` to the next packet boundary using `round_up()` function.
However, if zero-length command is found exactly on a packet boundary
(i.e., `pos` is a multiple of wMaxPacketSize, including 0), `round_up`
function will return the unchanged value of `pos`. This prevents `pos`
to be increased, causing an infinite loop in the parsing logic.
This patch fixes this in the function by using `pos + 1` instead.
This ensures that even if `pos` is on a boundary, the calculation is
based on `pos + 1`, forcing `round_up()` to always return the next
aligned boundary. |
| In the Linux kernel, the following vulnerability has been resolved:
PCI/AER: Fix NULL pointer access by aer_info
The kzalloc(GFP_KERNEL) may return NULL, so all accesses to aer_info->xxx
will result in kernel panic. Fix it. |
| Insufficient control flow management in the Linux kernel-mode driver for some Intel(R) 800 Series Ethernet before version 1.17.2 may allow an authenticated user to potentially enable escalation of privilege via local access. |
| In the Linux kernel, the following vulnerability has been resolved:
bus: fsl-mc: Check return value of platform_get_resource()
platform_get_resource() returns NULL in case of failure, so check its
return value and propagate the error in order to prevent NULL pointer
dereference. |
| In the Linux kernel, the following vulnerability has been resolved:
platform/x86: alienware-wmi-wmax: Fix NULL pointer dereference in sleep handlers
Devices without the AWCC interface don't initialize `awcc`. Add a check
before dereferencing it in sleep handlers. |
| In the Linux kernel, the following vulnerability has been resolved:
mm: swap: check for stable address space before operating on the VMA
It is possible to hit a zero entry while traversing the vmas in unuse_mm()
called from swapoff path and accessing it causes the OOPS:
Unable to handle kernel NULL pointer dereference at virtual address
0000000000000446--> Loading the memory from offset 0x40 on the
XA_ZERO_ENTRY as address.
Mem abort info:
ESR = 0x0000000096000005
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x05: level 1 translation fault
The issue is manifested from the below race between the fork() on a
process and swapoff:
fork(dup_mmap()) swapoff(unuse_mm)
--------------- -----------------
1) Identical mtree is built using
__mt_dup().
2) copy_pte_range()-->
copy_nonpresent_pte():
The dst mm is added into the
mmlist to be visible to the
swapoff operation.
3) Fatal signal is sent to the parent
process(which is the current during the
fork) thus skip the duplication of the
vmas and mark the vma range with
XA_ZERO_ENTRY as a marker for this process
that helps during exit_mmap().
4) swapoff is tried on the
'mm' added to the 'mmlist' as
part of the 2.
5) unuse_mm(), that iterates
through the vma's of this 'mm'
will hit the non-NULL zero entry
and operating on this zero entry
as a vma is resulting into the
oops.
The proper fix would be around not exposing this partially-valid tree to
others when droping the mmap lock, which is being solved with [1]. A
simpler solution would be checking for MMF_UNSTABLE, as it is set if
mm_struct is not fully initialized in dup_mmap().
Thanks to Liam/Lorenzo/David for all the suggestions in fixing this
issue. |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: mvsas: Fix use-after-free bugs in mvs_work_queue
During the detaching of Marvell's SAS/SATA controller, the original code
calls cancel_delayed_work() in mvs_free() to cancel the delayed work
item mwq->work_q. However, if mwq->work_q is already running, the
cancel_delayed_work() may fail to cancel it. This can lead to
use-after-free scenarios where mvs_free() frees the mvs_info while
mvs_work_queue() is still executing and attempts to access the
already-freed mvs_info.
A typical race condition is illustrated below:
CPU 0 (remove) | CPU 1 (delayed work callback)
mvs_pci_remove() |
mvs_free() | mvs_work_queue()
cancel_delayed_work() |
kfree(mvi) |
| mvi-> // UAF
Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure
that the delayed work item is properly canceled and any executing
delayed work item completes before the mvs_info is deallocated.
This bug was found by static analysis. |
| In the Linux kernel, the following vulnerability has been resolved:
pinctrl: check the return value of pinmux_ops::get_function_name()
While the API contract in docs doesn't specify it explicitly, the
generic implementation of the get_function_name() callback from struct
pinmux_ops - pinmux_generic_get_function_name() - can fail and return
NULL. This is already checked in pinmux_check_ops() so add a similar
check in pinmux_func_name_to_selector() instead of passing the returned
pointer right down to strcmp() where the NULL can get dereferenced. This
is normal operation when adding new pinfunctions. |
