| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
net: openvswitch: reject oversized nested action attrs
Open vSwitch stores generated flow actions as nlattrs, whose nla_len
field is u16. Commit a1e64addf3ff ("net: openvswitch: remove
misbehaving actions length check") allowed the total sw_flow_actions
stream to grow beyond 64 KiB, which is valid, but also removed the last
guard preventing a generated nested action attribute from exceeding
U16_MAX.
An oversized generated container can thus be closed with a truncated
nla_len. A later dump or teardown then walks a structurally different
stream than the one that was validated. In particular, an oversized
nested CLONE/CT action may cause subsequent bytes in the generated
stream to be interpreted as independent actions.
Keep the larger total-action-stream behavior, but make nested action
close reject generated containers that do not fit in nla_len, and return
the error through all callers. For recursive SAMPLE, CLONE, DEC_TTL, and
CHECK_PKT_LEN builders, trim resource-owning action-list tails in reverse
construction order before discarding failed wrappers, so resources copied
into the rejected tails are released before the wrappers are removed.
Most failed outer wrappers are discarded by truncating actions_len after
child resources have been released. CHECK_PKT_LEN also trims its parent
after branch resources are gone. SET/TUNNEL close failures unwind their
known tun_dst ownership directly, and SET_TO_MASKED has no external
ownership and truncates on close failure. |
| In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Initialize new folios before use
KMSAN reports an uninitialized value in longest_match_std(), invoked
from ntfs_compress_write(). When new folios are allocated without being
marked uptodate and ni_read_frame() is skipped because the caller expects
the frame to be completely overwritten, some reserved folios may remain
only partially filled, leaving the rest memory uninitialized. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/panthor: fix for dma-fence safe access rules
Commit 506aa8b02a8d6 ("dma-fence: Add safe access helpers and document
the rules") details the dma-fence safe access rules. The most common
culprit is that drm_sched_fence_get_timeline_name may race with
group_free_queue. |
| In the Linux kernel, the following vulnerability has been resolved:
Revert "arm64: zynqmp: Add an OP-TEE node to the device tree"
This reverts commit 06d22ed6b6635b17551f386b50bb5aaff9b75fbe.
OP-TEE logic in U-Boot automatically injects a reserved-memory
node along with optee firmware node to kernel device tree.
The injection logic is dependent on that there is no manually
defined optee node. Having the node in zynqmp.dtsi effectively
breaks OP-TEE's insertion of the reserved-memory node, causing
memory access violations during runtime. |
| In the Linux kernel, the following vulnerability has been resolved:
jfs: nlink overflow in jfs_rename
If nlink is maximal for a directory (-1) and inside that directory you
perform a rename for some child directory (not moving from the parent),
then the nlink of the first directory is first incremented and later
decremented. Normally this is fine, but when nlink = -1 this causes a
wrap around to 0, and then drop_nlink issues a warning.
After applying the patch syzbot no longer issues any warnings. I also
ran some basic fs tests to look for any regressions. |
| In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: handle attr_set_size() errors when truncating files
If attr_set_size() fails while truncating down, the error is silently
ignored and the inode may be left in an inconsistent state. |
| In the Linux kernel, the following vulnerability has been resolved:
ASoC: SOF: ipc4-topology: Correct the allocation size for bytes controls
The size of the data behind of scontrol->ipc_control_data for bytes
controls is:
[1] sizeof(struct sof_ipc4_control_data) + // kernel only struct
[2] sizeof(struct sof_abi_hdr)) + payload
The max_size specifies the size of [2] and it is coming from topology.
Change the function to take this into account and allocate adequate amount
of memory behind scontrol->ipc_control_data.
With the change we will allocate [1] amount more memory to be able to hold
the full size of data. |
| In the Linux kernel, the following vulnerability has been resolved:
rpmsg: core: fix race in driver_override_show() and use core helper
The driver_override_show function reads the driver_override string
without holding the device_lock. However, the store function modifies
and frees the string while holding the device_lock. This creates a race
condition where the string can be freed by the store function while
being read by the show function, leading to a use-after-free.
To fix this, replace the rpmsg_string_attr macro with explicit show and
store functions. The new driver_override_store uses the standard
driver_set_override helper. Since the introduction of
driver_set_override, the comments in include/linux/rpmsg.h have stated
that this helper must be used to set or clear driver_override, but the
implementation was not updated until now.
Because driver_set_override modifies and frees the string while holding
the device_lock, the new driver_override_show now correctly holds the
device_lock during the read operation to prevent the race.
Additionally, since rpmsg_string_attr has only ever been used for
driver_override, removing the macro simplifies the code. |
| In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix reservation leak in some error paths when inserting inline extent
If we fail to allocate a path or join a transaction, we return from
__cow_file_range_inline() without freeing the reserved qgroup data,
resulting in a leak. Fix this by ensuring we call btrfs_qgroup_free_data()
in such cases. |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Validate sp before freeing associated memory
System crash with the following signature
[154563.214890] nvme nvme2: NVME-FC{1}: controller connect complete
[154564.169363] qla2xxx [0000:b0:00.1]-3002:2: nvme: Sched: Set ZIO exchange threshold to 3.
[154564.169405] qla2xxx [0000:b0:00.1]-ffffff:2: SET ZIO Activity exchange threshold to 5.
[154565.539974] qla2xxx [0000:b0:00.1]-5013:2: RSCN database changed – 0078 0080 0000.
[154565.545744] qla2xxx [0000:b0:00.1]-5013:2: RSCN database changed – 0078 00a0 0000.
[154565.545857] qla2xxx [0000:b0:00.1]-11a2:2: FEC=enabled (data rate).
[154565.552760] qla2xxx [0000:b0:00.1]-11a2:2: FEC=enabled (data rate).
[154565.553079] BUG: kernel NULL pointer dereference, address: 00000000000000f8
[154565.553080] #PF: supervisor read access in kernel mode
[154565.553082] #PF: error_code(0x0000) - not-present page
[154565.553084] PGD 80000010488ab067 P4D 80000010488ab067 PUD 104978a067 PMD 0
[154565.553089] Oops: 0000 1 PREEMPT SMP PTI
[154565.553092] CPU: 10 PID: 858 Comm: qla2xxx_2_dpc Kdump: loaded Tainted: G OE ------- --- 5.14.0-503.11.1.el9_5.x86_64 #1
[154565.553096] Hardware name: HPE Synergy 660 Gen10/Synergy 660 Gen10 Compute Module, BIOS I43 09/30/2024
[154565.553097] RIP: 0010:qla_fab_async_scan.part.0+0x40b/0x870 [qla2xxx]
[154565.553141] Code: 00 00 e8 58 a3 ec d4 49 89 e9 ba 12 20 00 00 4c 89 e6 49 c7 c0 00 ee a8 c0 48 c7 c1 66 c0 a9 c0 bf 00 80 00 10 e8 15 69 00 00 <4c> 8b 8d f8 00 00 00 4d 85 c9 74 35 49 8b 84 24 00 19 00 00 48 8b
[154565.553143] RSP: 0018:ffffb4dbc8aebdd0 EFLAGS: 00010286
[154565.553145] RAX: 0000000000000000 RBX: ffff8ec2cf0908d0 RCX: 0000000000000002
[154565.553147] RDX: 0000000000000000 RSI: ffffffffc0a9c896 RDI: ffffb4dbc8aebd47
[154565.553148] RBP: 0000000000000000 R08: ffffb4dbc8aebd45 R09: 0000000000ffff0a
[154565.553150] R10: 0000000000000000 R11: 000000000000000f R12: ffff8ec2cf0908d0
[154565.553151] R13: ffff8ec2cf090900 R14: 0000000000000102 R15: ffff8ec2cf084000
[154565.553152] FS: 0000000000000000(0000) GS:ffff8ed27f800000(0000) knlGS:0000000000000000
[154565.553154] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[154565.553155] CR2: 00000000000000f8 CR3: 000000113ae0a005 CR4: 00000000007706f0
[154565.553157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[154565.553158] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[154565.553159] PKRU: 55555554
[154565.553160] Call Trace:
[154565.553162] <TASK>
[154565.553165] ? show_trace_log_lvl+0x1c4/0x2df
[154565.553172] ? show_trace_log_lvl+0x1c4/0x2df
[154565.553177] ? qla_fab_async_scan.part.0+0x40b/0x870 [qla2xxx]
[154565.553215] ? __die_body.cold+0x8/0xd
[154565.553218] ? page_fault_oops+0x134/0x170
[154565.553223] ? snprintf+0x49/0x70
[154565.553229] ? exc_page_fault+0x62/0x150
[154565.553238] ? asm_exc_page_fault+0x22/0x30
Check for sp being non NULL before freeing any associated memory |
| In the Linux kernel, the following vulnerability has been resolved:
wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add
The driver does not set hw->sta_data_size, which causes mac80211 to
allocate insufficient space for driver private station data in
__sta_info_alloc(). When rtl8xxxu_sta_add() accesses members of
struct rtl8xxxu_sta_info through sta->drv_priv, this results in a
slab-out-of-bounds write.
KASAN report on RISC-V (VisionFive 2) with RTL8192EU adapter:
BUG: KASAN: slab-out-of-bounds in rtl8xxxu_sta_add+0x31c/0x346
Write of size 8 at addr ffffffd6d3e9ae88 by task kworker/u16:0/12
Set hw->sta_data_size to sizeof(struct rtl8xxxu_sta_info) during
probe, similar to how hw->vif_data_size is configured. This ensures
mac80211 allocates sufficient space for the driver's per-station
private data.
Tested on StarFive VisionFive 2 v1.2A board. |
| In the Linux kernel, the following vulnerability has been resolved:
dmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue()
Add proper locking in mmp_pdma_residue() to prevent use-after-free when
accessing descriptor list and descriptor contents.
The race occurs when multiple threads call tx_status() while the tasklet
on another CPU is freeing completed descriptors:
CPU 0 CPU 1
----- -----
mmp_pdma_tx_status()
mmp_pdma_residue()
-> NO LOCK held
list_for_each_entry(sw, ..)
DMA interrupt
dma_do_tasklet()
-> spin_lock(&desc_lock)
list_move(sw->node, ...)
spin_unlock(&desc_lock)
| dma_pool_free(sw) <- FREED!
-> access sw->desc <- UAF!
This issue can be reproduced when running dmatest on the same channel with
multiple threads (threads_per_chan > 1).
Fix by protecting the chain_running list iteration and descriptor access
with the chan->desc_lock spinlock. |
| In the Linux kernel, the following vulnerability has been resolved:
smb/server: fix refcount leak in parse_durable_handle_context()
When the command is a replay operation and -ENOEXEC is returned,
the refcount of ksmbd_file must be released. |
| In the Linux kernel, the following vulnerability has been resolved:
iommu/sva: invalidate stale IOTLB entries for kernel address space
Introduce a new IOMMU interface to flush IOTLB paging cache entries for
the CPU kernel address space. This interface is invoked from the x86
architecture code that manages combined user and kernel page tables,
specifically before any kernel page table page is freed and reused.
This addresses the main issue with vfree() which is a common occurrence
and can be triggered by unprivileged users. While this resolves the
primary problem, it doesn't address some extremely rare case related to
memory unplug of memory that was present as reserved memory at boot, which
cannot be triggered by unprivileged users. The discussion can be found at
the link below.
Enable SVA on x86 architecture since the IOMMU can now receive
notification to flush the paging cache before freeing the CPU kernel page
table pages. |
| In the Linux kernel, the following vulnerability has been resolved:
ALSA: ac97: fix a double free in snd_ac97_controller_register()
If ac97_add_adapter() fails, put_device() is the correct way to drop
the device reference. kfree() is not required.
Add kfree() if idr_alloc() fails and in ac97_adapter_release() to do
the cleanup.
Found by code review. |
| In the Linux kernel, the following vulnerability has been resolved:
dm-verity: disable recursive forward error correction
There are two problems with the recursive correction:
1. It may cause denial-of-service. In fec_read_bufs, there is a loop that
has 253 iterations. For each iteration, we may call verity_hash_for_block
recursively. There is a limit of 4 nested recursions - that means that
there may be at most 253^4 (4 billion) iterations. Red Hat QE team
actually created an image that pushes dm-verity to this limit - and this
image just makes the udev-worker process get stuck in the 'D' state.
2. It doesn't work. In fec_read_bufs we store data into the variable
"fio->bufs", but fio bufs is shared between recursive invocations, if
"verity_hash_for_block" invoked correction recursively, it would
overwrite partially filled fio->bufs. |
| In the Linux kernel, the following vulnerability has been resolved:
gpio: mpsse: ensure worker is torn down
When an IRQ worker is running, unplugging the device would cause a
crash. The sealevel hardware this driver was written for was not
hotpluggable, so I never realized it.
This change uses a spinlock to protect a list of workers, which
it tears down on disconnect. |
| In the Linux kernel, the following vulnerability has been resolved:
ksmbd: Fix refcount leak when invalid session is found on session lookup
When a session is found but its state is not SMB2_SESSION_VALID, It
indicates that no valid session was found, but it is missing to decrement
the reference count acquired by the session lookup, which results in
a reference count leak. This patch fixes the issue by explicitly calling
ksmbd_user_session_put to release the reference to the session. |
| In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conncount: fix leaked ct in error paths
There are some situations where ct might be leaked as error paths are
skipping the refcounted check and return immediately. In order to solve
it make sure that the check is always called. |
| In the Linux kernel, the following vulnerability has been resolved:
smc91x: fix broken irq-context in PREEMPT_RT
When smc91x.c is built with PREEMPT_RT, the following splat occurs
in FVP_RevC:
[ 13.055000] smc91x LNRO0003:00 eth0: link up, 10Mbps, half-duplex, lpa 0x0000
[ 13.062137] BUG: workqueue leaked atomic, lock or RCU: kworker/2:1[106]
[ 13.062137] preempt=0x00000000 lock=0->0 RCU=0->1 workfn=mld_ifc_work
[ 13.062266] C
** replaying previous printk message **
[ 13.062266] CPU: 2 UID: 0 PID: 106 Comm: kworker/2:1 Not tainted 6.18.0-dirty #179 PREEMPT_{RT,(full)}
[ 13.062353] Hardware name: , BIOS
[ 13.062382] Workqueue: mld mld_ifc_work
[ 13.062469] Call trace:
[ 13.062494] show_stack+0x24/0x40 (C)
[ 13.062602] __dump_stack+0x28/0x48
[ 13.062710] dump_stack_lvl+0x7c/0xb0
[ 13.062818] dump_stack+0x18/0x34
[ 13.062926] process_scheduled_works+0x294/0x450
[ 13.063043] worker_thread+0x260/0x3d8
[ 13.063124] kthread+0x1c4/0x228
[ 13.063235] ret_from_fork+0x10/0x20
This happens because smc_special_trylock() disables IRQs even on PREEMPT_RT,
but smc_special_unlock() does not restore IRQs on PREEMPT_RT.
The reason is that smc_special_unlock() calls spin_unlock_irqrestore(),
and rcu_read_unlock_bh() in __dev_queue_xmit() cannot invoke
rcu_read_unlock() through __local_bh_enable_ip() when current->softirq_disable_cnt becomes zero.
To address this issue, replace smc_special_trylock() with spin_trylock_irqsave(). |
