Linux: >> Linux Kernel >> 5.14.2 Security Vulnerabilities
In the Linux kernel, the following vulnerability has been resolved:
net: fix potential refcount leak in ndisc_router_discovery()
The issue happens on specific paths in the function. After both the
object `rt` and `neigh` are grabbed successfully, when `lifetime` is
nonzero but the metric needs change, the function just deletes the
route and set `rt` to NULL. Then, it may try grabbing `rt` and `neigh`
again if above conditions hold. The function simply overwrite `neigh`
if succeeds or returns if fails, without decreasing the reference
count of previous `neigh`. This may result in memory leaks.
Fix it by decrementing the reference count of `neigh` in place.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
net: qrtr: start MHI channel after endpoit creation
MHI channel may generates event/interrupt right after enabling.
It may leads to 2 race conditions issues.
1)
Such event may be dropped by qcom_mhi_qrtr_dl_callback() at check:
if (!qdev || mhi_res->transaction_status)
return;
Because dev_set_drvdata(&mhi_dev->dev, qdev) may be not performed at
this moment. In this situation qrtr-ns will be unable to enumerate
services in device.
---------------------------------------------------------------
2)
Such event may come at the moment after dev_set_drvdata() and
before qrtr_endpoint_register(). In this case kernel will panic with
accessing wrong pointer at qcom_mhi_qrtr_dl_callback():
rc = qrtr_endpoint_post(&qdev->ep, mhi_res->buf_addr,
mhi_res->bytes_xferd);
Because endpoint is not created yet.
--------------------------------------------------------------
So move mhi_prepare_for_transfer_autoqueue after endpoint creation
to fix it.
CVSS Score
4.7
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
gadgetfs: ep_io - wait until IRQ finishes
after usb_ep_queue() if wait_for_completion_interruptible() is
interrupted we need to wait until IRQ gets finished.
Otherwise complete() from epio_complete() can corrupt stack.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
clk: qcom: ipq8074: dont disable gcc_sleep_clk_src
Once the usb sleep clocks are disabled, clock framework is trying to
disable the sleep clock source also.
However, it seems that it cannot be disabled and trying to do so produces:
[ 245.436390] ------------[ cut here ]------------
[ 245.441233] gcc_sleep_clk_src status stuck at 'on'
[ 245.441254] WARNING: CPU: 2 PID: 223 at clk_branch_wait+0x130/0x140
[ 245.450435] Modules linked in: xhci_plat_hcd xhci_hcd dwc3 dwc3_qcom leds_gpio
[ 245.456601] CPU: 2 PID: 223 Comm: sh Not tainted 5.18.0-rc4 #215
[ 245.463889] Hardware name: Xiaomi AX9000 (DT)
[ 245.470050] pstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 245.474307] pc : clk_branch_wait+0x130/0x140
[ 245.481073] lr : clk_branch_wait+0x130/0x140
[ 245.485588] sp : ffffffc009f2bad0
[ 245.489838] x29: ffffffc009f2bad0 x28: ffffff8003e6c800 x27: 0000000000000000
[ 245.493057] x26: 0000000000000000 x25: 0000000000000000 x24: ffffff800226ef20
[ 245.500175] x23: ffffffc0089ff550 x22: 0000000000000000 x21: ffffffc008476ad0
[ 245.507294] x20: 0000000000000000 x19: ffffffc00965ac70 x18: fffffffffffc51a7
[ 245.514413] x17: 68702e3030303837 x16: 3a6d726f6674616c x15: ffffffc089f2b777
[ 245.521531] x14: ffffffc0095c9d18 x13: 0000000000000129 x12: 0000000000000129
[ 245.528649] x11: 00000000ffffffea x10: ffffffc009621d18 x9 : 0000000000000001
[ 245.535767] x8 : 0000000000000001 x7 : 0000000000017fe8 x6 : 0000000000000001
[ 245.542885] x5 : ffffff803fdca6d8 x4 : 0000000000000000 x3 : 0000000000000027
[ 245.550002] x2 : 0000000000000027 x1 : 0000000000000023 x0 : 0000000000000026
[ 245.557122] Call trace:
[ 245.564229] clk_branch_wait+0x130/0x140
[ 245.566490] clk_branch2_disable+0x2c/0x40
[ 245.570656] clk_core_disable+0x60/0xb0
[ 245.574561] clk_core_disable+0x68/0xb0
[ 245.578293] clk_disable+0x30/0x50
[ 245.582113] dwc3_qcom_remove+0x60/0xc0 [dwc3_qcom]
[ 245.585588] platform_remove+0x28/0x60
[ 245.590361] device_remove+0x4c/0x80
[ 245.594179] device_release_driver_internal+0x1dc/0x230
[ 245.597914] device_driver_detach+0x18/0x30
[ 245.602861] unbind_store+0xec/0x110
[ 245.607027] drv_attr_store+0x24/0x40
[ 245.610847] sysfs_kf_write+0x44/0x60
[ 245.614405] kernfs_fop_write_iter+0x128/0x1c0
[ 245.618052] new_sync_write+0xc0/0x130
[ 245.622391] vfs_write+0x1d4/0x2a0
[ 245.626123] ksys_write+0x58/0xe0
[ 245.629508] __arm64_sys_write+0x1c/0x30
[ 245.632895] invoke_syscall.constprop.0+0x5c/0x110
[ 245.636890] do_el0_svc+0xa0/0x150
[ 245.641488] el0_svc+0x18/0x60
[ 245.644872] el0t_64_sync_handler+0xa4/0x130
[ 245.647914] el0t_64_sync+0x174/0x178
[ 245.652340] ---[ end trace 0000000000000000 ]---
So, add CLK_IS_CRITICAL flag to the clock so that the kernel won't try
to disable the sleep clock.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Prevent buffer overflow crashes in debugfs with malformed user input
Malformed user input to debugfs results in buffer overflow crashes. Adapt
input string lengths to fit within internal buffers, leaving space for NULL
terminators.
CVSS Score
7.8
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
usb: renesas: Fix refcount leak bug
In usbhs_rza1_hardware_init(), of_find_node_by_name() will return
a node pointer with refcount incremented. We should use of_node_put()
when it is not used anymore.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
usb: host: ohci-ppc-of: Fix refcount leak bug
In ohci_hcd_ppc_of_probe(), of_find_compatible_node() will return
a node pointer with refcount incremented. We should use of_node_put()
when it is not used anymore.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
usb: cdns3 fix use-after-free at workaround 2
BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac
cdns3_wa2_remove_old_request()
{
...
kfree(priv_req->request.buf);
cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request);
list_del_init(&priv_req->list);
^^^ use after free
...
}
cdns3_gadget_ep_free_request() free the space pointed by priv_req,
but priv_req is used in the following list_del_init().
This patch move list_del_init() before cdns3_gadget_ep_free_request().
CVSS Score
7.8
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
tty: serial: Fix refcount leak bug in ucc_uart.c
In soc_info(), of_find_node_by_type() will return a node pointer
with refcount incremented. We should use of_node_put() when it is
not used anymore.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
ext4: avoid resizing to a partial cluster size
This patch avoids an attempt to resize the filesystem to an
unaligned cluster boundary. An online resize to a size that is not
integral to cluster size results in the last iteration attempting to
grow the fs by a negative amount, which trips a BUG_ON and leaves the fs
with a corrupted in-memory superblock.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-06-18