In the Linux kernel, the following vulnerability has been resolved:
hwmon: Fix potential UAF in pec_store
Sashiko reports:
In pec_store(), a guard(mutex)(&hwdev->lock) is taken. If the chip write
operation returns an error other than -EOPNOTSUPP, the code jumps to the
put label, which calls put_d...
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nfnetlink_log: cope with concurrent instance destruction
Instances are refcounted. However, only memory release happens on the
1 -> 0 transition; the unlink from hashes can occur with any refcount.
Uncooperative usersp...
In the Linux kernel, the following vulnerability has been resolved:
virtio_ring: fix stale descriptor flags after a failed packed add
In a packed ring the AVAIL and USED bits sit in the descriptor itself,
so writing them makes that descriptor available. Those bit combinations
flip meaning on every...
In the Linux kernel, the following vulnerability has been resolved:
virtio: fix use-after-free in unregister_virtio_device()
device_unregister() is device_del() plus put_device(). When the caller
holds no extra reference, that drops the last one and runs the release
callback, which for several tra...
In the Linux kernel, the following vulnerability has been resolved:
virtio_console: do not free control-out buffers on remove
__send_control_msg() publishes &portdev->cpkt as the control-out
virtqueue cookie. remove_vqs() walks every virtqueue and passes leftover
cookies to free_buf(), which treat...
In the Linux kernel, the following vulnerability has been resolved:
vhost/vdpa: reject VRING_NUM larger than device max
vhost_vring_set_num() accepts any non-zero power-of-two queue size that
fits in 16 bits. vhost-vdpa then passes that value to set_vq_num()
without comparing it with get_vq_num_ma...
In the Linux kernel, the following vulnerability has been resolved:
vhost-vdpa: don't install the eventfd_ctx_fdget() error in config_ctx
vhost_vdpa_set_config_call() swaps the eventfd_ctx_fdget() return value
into v->config_ctx before checking it, so on failure the field briefly
holds an ERR_PTR:...
In the Linux kernel, the following vulnerability has been resolved:
vhost-vdpa: protect config_ctx from being freed under the config callback
vhost_vdpa_config_cb() loads v->config_ctx and signals it without taking
a reference and without holding any lock:
struct eventfd_ctx *config_ctx = v->con...
In the Linux kernel, the following vulnerability has been resolved:
vdpa_sim_blk: reject out-of-range sector starts
vdpasim_blk_check_range() logs an invalid start sector but continues
validating the request. The subsequent unsigned capacity subtraction can
underflow and let an out-of-range buffe...
In the Linux kernel, the following vulnerability has been resolved:
vdpa_sim_net: check TX pull result before RX copy
vringh_iov_pull_iotlb() returns a signed byte count. A failed TX pull is
currently added to the unsigned byte counter and then passed as a size_t
length to receive_filter() and vr...
In the Linux kernel, the following vulnerability has been resolved:
vduse: validate virtqueue alignment
vduse_validate_config() only checks the upper bound of vq_align. Invalid
values can therefore reach vring_create_virtqueue_map(). The split-ring
helpers use align - 1 as a bit mask, so the align...
In the Linux kernel, the following vulnerability has been resolved:
vhost: invalidate vring access on IOTLB transitions
When VIRTIO_F_ACCESS_PLATFORM changes, cached vring pointers and IOTLB
metadata are interpreted in a different address space. Keeping them
across the transition can leave stale r...
In the Linux kernel, the following vulnerability has been resolved:
virtio_input: reset device if input_register_device() fails
Probe marks the device DRIVER_OK with virtio_device_ready() before
calling input_register_device(). If registration fails, the error path
cleared vi->ready and called del...
In the Linux kernel, the following vulnerability has been resolved:
virtio_input: stop callbacks before unregistering input device
virtinput_remove() unregisters the input device before resetting the
virtio device. virtinput_recv_events() drops vi->lock around input_event(),
so clearing vi->ready...
In the Linux kernel, the following vulnerability has been resolved:
af_unix: Update last skb marker in manage_oob().
Fahad Alharbi reported that blocking recv(MSG_PEEK) could hog CPU
due to OOB skb.
In the following cases, manage_oob() skips OOB skb(s) and returns
NULL for the last recv(MSG_PEEK)...
In the Linux kernel, the following vulnerability has been resolved:
net: ipv6: Fix UDP length overflow with PMTU discover and big MTU
This commit bounds cork->base.fragsize to IP6_MAX_MTU for UDP sockets to
avoid a possible overflow of UDP length that triggers a WARN in
udp_set_len_short when sets...
In the Linux kernel, the following vulnerability has been resolved:
vduse: return compat ioctl results directly
The compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but
then calls the native handler. Their different command sizes make native
dispatch return -ENOIOCTLCMD.
For GET_F...
In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: cortina: Fix budget accounting
The gmac_rx() function returns the remaining NAPI budget, but its
caller treats the return value as the number of packets received. An
idle poll therefore reports a full budget and rem...
In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: cortina: Count dropped frames as NAPI work
The RX loop only consumes budget when it successfully delivers a frame.
Error paths keep consuming descriptors without reducing the budget, so a
stream of bad frames can pr...
In the Linux kernel, the following vulnerability has been resolved:
s390/debug: Fix NULL pointer dereference in debug_set_level()
Commit a2cec6863709 ("s390/debug: Add s390dbf kernel parameter")
incorrectly removed a null-id check from debug_set_level(), introducing
a possible NULL pointer derefer...
In the Linux kernel, the following vulnerability has been resolved:
ice: add missing xa_destroy for sched_node_ids
Commit 16dfa49406bc ("ice: Introduce new parameters in ice_sched_node")
added a sched_node_ids xarray to the port info structure, but never called
xa_destroy on it.
Since xarrays can...
In the Linux kernel, the following vulnerability has been resolved:
eth: ice: don't dereference pointers from TP_printk()
After forwarding net-next during the v7.3 merge window we started
seeing:
TRACE EVENT ERROR: Event ice_tx_dim_work has double dereference in TP_printk: REC->q_vector->tx.tx_...
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btusb: Fix UAF of btusb_data by rx_work
btusb_close() and btusb_flush() cancel data->rx_work with the
asynchronous cancel_delayed_work(), so if btusb_rx_work() is already
running on another CPU it keeps running after th...
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btintel_pcie: validate packet_len before skb_put_data
btintel_pcie_submit_rx_work() reads packet_len from rfh_hdr without
checking if it exceeds the RX buffer size. An oversized packet_len
can lead to an out-of-bounds r...
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sysfs: Fix NULL pointer dereference in device_del()
A NULL pointer dereference in klist_put() occurs when a child device (such
as a BNEP network device in bnep_session) is concurrently being
unregistered while hci_c...
In the Linux kernel, the following vulnerability has been resolved:
ipv6: null-check fib6_node before accessing in __ip6_del_rt_siblings()
syzbot reported a null-ptr-deref in __ip6_del_rt_siblings() [0].
The stack trace hinted towards a null dereference of rt->fib6_node when
fn->leaf is accessed...
In the Linux kernel, the following vulnerability has been resolved:
net: macb: destroy the phylink instance on the probe error path
macb_mii_init() creates a phylink instance on both of its success paths,
but the probe unwind frees the netdev without destroying it, so a failing
macb_alloc_tieoff()...
In the Linux kernel, the following vulnerability has been resolved:
net: macb: put the "mdio" child node reference on success
macb_mii_init() holds the reference returned by of_get_child_by_name()
for macb_mdiobus_register() and drops it only on the error paths, so
every successful probe leaks a n...
In the Linux kernel, the following vulnerability has been resolved:
nstree: check listing permission before taking a namespace reference
legitimize_ns() takes a reference on the candidate namespace before
may_list_ns() has decided whether the caller may see it. The
__free(ns_put) cleanup on the de...
In the Linux kernel, the following vulnerability has been resolved:
watchdog: msc313e: Avoid division by zero
clk_get_rate() could return 0. Avoid a division by zero panic.
In the Linux kernel, the following vulnerability has been resolved:
watchdog: msc313e: Fix clock leak and spurious timer in settimeout()
msc313e_wdt_settimeout() unconditionally calls msc313e_wdt_start() which
introduces two severe bugs:
1. If the watchdog is already active, calling start() again...
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (corsair-cpro) Create debugfs entries after hwmon registration
ccp_debugfs_init() registers debugfs files whose private data is the devm
allocated ccp. It runs before hwmon_device_register_with_info(), so when
that registr...
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (corsair-cpro) Remove debugfs entries when probe fails
ccp_debugfs_init() registers debugfs files whose private data is the devm
allocated ccp. If hwmon_device_register_with_info() fails right after it,
ccp_probe() returns...
In the Linux kernel, the following vulnerability has been resolved:
octeontx2-pf: reset HTB scheduler topology before freeing queues
HTB offload programs NIX_AF_TLxX_TOPOLOGY on QoS-allocated scheduler
queues via otx2_qos_txschq_set_parent_topology(), but teardown freed
those queues without cleari...
In the Linux kernel, the following vulnerability has been resolved:
vxlan: initialize _md in vxlan_xmit_one()
If a VXLAN device is configured with both VXLAN_F_COLLECT_METADATA and
VXLAN_F_GBP, and a packet is transmitted through it using an external
ip_tunnel_info that lacks the IP_TUNNEL_VXLAN_O...
In the Linux kernel, the following vulnerability has been resolved:
ppp_synctty: ensure a writeable skb header
ppp_sync_txmunge() checks headroom before prepending the address and
control bytes, but does not ensure that the skb header is writable.
A received skb can reach this function through PPP...
In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: initialize ptp_lock at probe time
priv->ptp_lock is only initialized in stmmac_ptp_register(), which runs
during __stmmac_open(). However, the lock is also used while the
interface is down and has never been opened: t...
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Move representor vnic reporter to eswitch devlink port
The representor vnic devlink health reporter is created and destroyed
along the representor netdev (un)load path, which is not serialized by
the devlink instance lo...
In the Linux kernel, the following vulnerability has been resolved:
perf/core: Allow list_del during perf_event_overflow()
A PMU might use perf_sched_cb_inc() and perf_sched_cb_dec()
interface to get the PMU call back function pmu::sched_task
invoked at schedule in and schedule out. This is achiev...
In the Linux kernel, the following vulnerability has been resolved:
perf/x86/intel: Prevent drain_pebs() reentry
The PEBS buffer is shared by all events on a CPU, so drain_pebs() must
not be reentered. If so, one instance may observe stale buffer state and
potentially access out-of-bound memory....
In the Linux kernel, the following vulnerability has been resolved:
net/sched: cls_route: free emptied bucket on filter move
route4_change can move an existing filter to a different top-level
bucket: route4_set_parms recomputes the handle from TCA_ROUTE4_TO/
FROM/IIF, and the handle-mismatch check...
In the Linux kernel, the following vulnerability has been resolved:
net/sched: cls_api: Don't replay RTM_GETCHAIN in tc_ctl_chain().
If a netlink socket sends RTM_GETCHAIN requests repeatedly
without recv()ing the responses, tc_ctl_chain() hogs CPU and
triggers Hung Task splat. [0]
As caught in t...
In the Linux kernel, the following vulnerability has been resolved:
net: hinic: fix mailbox segment buffer overflow
check_mbox_seq_id_and_seg_len() validates that seq_id does not
exceed SEQ_ID_MAX_VAL (42) and seg_len does not exceed
MBOX_SEG_LEN (48). However, this allows the last segment
(seq_i...
In the Linux kernel, the following vulnerability has been resolved:
net: net_failover: Fix the deadlock in net_failover_slave_name_change()
This is a sibling fix of commit
b84c5632c7b3 ("net: net_failover: Fix the deadlock in slave register").
There is netdev_lock_ops() in the upper callers, so us...
In the Linux kernel, the following vulnerability has been resolved:
net: mana: restore the XDP program pointer when pre-allocation fails
mana_xdp_set() publishes the new program into apc->bpf_prog before it
allocates anything, because mana_pre_alloc_rxbufs() sizes the buffers
from it via mana_get_...
In the Linux kernel, the following vulnerability has been resolved:
net/rds: fix tcp stream corruption with large pages
rds_message_map_pages() assigns PAGE_SIZE bytes to every
scatterlist entry, even when total_len ends in a partial page. The RDS
congestion map is defined as 8192 bytes, so on sys...
In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: fix TX descriptor availability check for TSO traffic
stmmac_tso_xmit() estimates the number of free TX descriptors required by
a TSO skb as:
(skb->len - proto_hdr_len) / TSO_MAX_BUFF_SIZE + 1
which assumes the payl...
In the Linux kernel, the following vulnerability has been resolved:
sunvdc: unmap LDC cookies when the descriptor send fails
__send_request() maps the request's pages into the LDC channel's map
table (ldc_map_sg()), fills in the descriptor and marks it
VIO_DESC_READY before ringing the doorbell vi...
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix hang for aborted WRITE_PENDING commands
When a LUN_RESET aborts a WRITE command that is in the
TRANSPORT_WRITE_PENDING state, the target core sets CMD_T_ABORTED and
waits for the frontend to finish process...
In the Linux kernel, the following vulnerability has been resolved:
configfs: pin the symlink target's dirent instead of chasing ->ci_dentry
create_link() reads the target's configfs_dirent from
item->ci_dentry->d_fsdata, relying on the item reference taken by
get_target(). That reference pins th...