Security Vulnerabilities - CVEs Published In May 2025
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: Purge vif txq in ieee80211_do_stop()
After ieee80211_do_stop() SKB from vif's txq could still be processed.
Indeed another concurrent vif schedule_and_wake_txq call could cause
those packets to be dequeued (see ieee80211_handle_wake_tx_queue())
without checking the sdata current state.
Because vif.drv_priv is now cleared in this function, this could lead to
driver crash.
For example in ath12k, ahvif is store in vif.drv_priv. Thus if
ath12k_mac_op_tx() is called after ieee80211_do_stop(), ahvif->ah can be
NULL, leading the ath12k_warn(ahvif->ah,...) call in this function to
trigger the NULL deref below.
Unable to handle kernel paging request at virtual address dfffffc000000001
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
batman_adv: bat0: Interface deactivated: brbh1337
Mem abort info:
ESR = 0x0000000096000004
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x04: level 0 translation fault
Data abort info:
ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
CM = 0, WnR = 0, TnD = 0, TagAccess = 0
GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfffffc000000001] address between user and kernel address ranges
Internal error: Oops: 0000000096000004 [#1] SMP
CPU: 1 UID: 0 PID: 978 Comm: lbd Not tainted 6.13.0-g633f875b8f1e #114
Hardware name: HW (DT)
pstate: 10000005 (nzcV daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ath12k_mac_op_tx+0x6cc/0x29b8 [ath12k]
lr : ath12k_mac_op_tx+0x174/0x29b8 [ath12k]
sp : ffffffc086ace450
x29: ffffffc086ace450 x28: 0000000000000000 x27: 1ffffff810d59ca4
x26: ffffff801d05f7c0 x25: 0000000000000000 x24: 000000004000001e
x23: ffffff8009ce4926 x22: ffffff801f9c0800 x21: ffffff801d05f7f0
x20: ffffff8034a19f40 x19: 0000000000000000 x18: ffffff801f9c0958
x17: ffffff800bc0a504 x16: dfffffc000000000 x15: ffffffc086ace4f8
x14: ffffff801d05f83c x13: 0000000000000000 x12: ffffffb003a0bf03
x11: 0000000000000000 x10: ffffffb003a0bf02 x9 : ffffff8034a19f40
x8 : ffffff801d05f818 x7 : 1ffffff0069433dc x6 : ffffff8034a19ee0
x5 : ffffff801d05f7f0 x4 : 0000000000000000 x3 : 0000000000000001
x2 : 0000000000000000 x1 : dfffffc000000000 x0 : 0000000000000008
Call trace:
ath12k_mac_op_tx+0x6cc/0x29b8 [ath12k] (P)
ieee80211_handle_wake_tx_queue+0x16c/0x260
ieee80211_queue_skb+0xeec/0x1d20
ieee80211_tx+0x200/0x2c8
ieee80211_xmit+0x22c/0x338
__ieee80211_subif_start_xmit+0x7e8/0xc60
ieee80211_subif_start_xmit+0xc4/0xee0
__ieee80211_subif_start_xmit_8023.isra.0+0x854/0x17a0
ieee80211_subif_start_xmit_8023+0x124/0x488
dev_hard_start_xmit+0x160/0x5a8
__dev_queue_xmit+0x6f8/0x3120
br_dev_queue_push_xmit+0x120/0x4a8
__br_forward+0xe4/0x2b0
deliver_clone+0x5c/0xd0
br_flood+0x398/0x580
br_dev_xmit+0x454/0x9f8
dev_hard_start_xmit+0x160/0x5a8
__dev_queue_xmit+0x6f8/0x3120
ip6_finish_output2+0xc28/0x1b60
__ip6_finish_output+0x38c/0x638
ip6_output+0x1b4/0x338
ip6_local_out+0x7c/0xa8
ip6_send_skb+0x7c/0x1b0
ip6_push_pending_frames+0x94/0xd0
rawv6_sendmsg+0x1a98/0x2898
inet_sendmsg+0x94/0xe0
__sys_sendto+0x1e4/0x308
__arm64_sys_sendto+0xc4/0x140
do_el0_svc+0x110/0x280
el0_svc+0x20/0x60
el0t_64_sync_handler+0x104/0x138
el0t_64_sync+0x154/0x158
To avoid that, empty vif's txq at ieee80211_do_stop() so no packet could
be dequeued after ieee80211_do_stop() (new packets cannot be queued
because SDATA_STATE_RUNNING is cleared at this point).
CVSS Score
5.5
EPSS Score
0.002
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
i2c: cros-ec-tunnel: defer probe if parent EC is not present
When i2c-cros-ec-tunnel and the EC driver are built-in, the EC parent
device will not be found, leading to NULL pointer dereference.
That can also be reproduced by unbinding the controller driver and then
loading i2c-cros-ec-tunnel module (or binding the device).
[ 271.991245] BUG: kernel NULL pointer dereference, address: 0000000000000058
[ 271.998215] #PF: supervisor read access in kernel mode
[ 272.003351] #PF: error_code(0x0000) - not-present page
[ 272.008485] PGD 0 P4D 0
[ 272.011022] Oops: Oops: 0000 [#1] SMP NOPTI
[ 272.015207] CPU: 0 UID: 0 PID: 3859 Comm: insmod Tainted: G S 6.15.0-rc1-00004-g44722359ed83 #30 PREEMPT(full) 3c7fb39a552e7d949de2ad921a7d6588d3a4fdc5
[ 272.030312] Tainted: [S]=CPU_OUT_OF_SPEC
[ 272.034233] Hardware name: HP Berknip/Berknip, BIOS Google_Berknip.13434.356.0 05/17/2021
[ 272.042400] RIP: 0010:ec_i2c_probe+0x2b/0x1c0 [i2c_cros_ec_tunnel]
[ 272.048577] Code: 1f 44 00 00 41 57 41 56 41 55 41 54 53 48 83 ec 10 65 48 8b 05 06 a0 6c e7 48 89 44 24 08 4c 8d 7f 10 48 8b 47 50 4c 8b 60 78 <49> 83 7c 24 58 00 0f 84 2f 01 00 00 48 89 fb be 30 06 00 00 4c 9
[ 272.067317] RSP: 0018:ffffa32082a03940 EFLAGS: 00010282
[ 272.072541] RAX: ffff969580b6a810 RBX: ffff969580b68c10 RCX: 0000000000000000
[ 272.079672] RDX: 0000000000000000 RSI: 0000000000000282 RDI: ffff969580b68c00
[ 272.086804] RBP: 00000000fffffdfb R08: 0000000000000000 R09: 0000000000000000
[ 272.093936] R10: 0000000000000000 R11: ffffffffc0600000 R12: 0000000000000000
[ 272.101067] R13: ffffffffa666fbb8 R14: ffffffffc05b5528 R15: ffff969580b68c10
[ 272.108198] FS: 00007b930906fc40(0000) GS:ffff969603149000(0000) knlGS:0000000000000000
[ 272.116282] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 272.122024] CR2: 0000000000000058 CR3: 000000012631c000 CR4: 00000000003506f0
[ 272.129155] Call Trace:
[ 272.131606] <TASK>
[ 272.133709] ? acpi_dev_pm_attach+0xdd/0x110
[ 272.137985] platform_probe+0x69/0xa0
[ 272.141652] really_probe+0x152/0x310
[ 272.145318] __driver_probe_device+0x77/0x110
[ 272.149678] driver_probe_device+0x1e/0x190
[ 272.153864] __driver_attach+0x10b/0x1e0
[ 272.157790] ? driver_attach+0x20/0x20
[ 272.161542] bus_for_each_dev+0x107/0x150
[ 272.165553] bus_add_driver+0x15d/0x270
[ 272.169392] driver_register+0x65/0x110
[ 272.173232] ? cleanup_module+0xa80/0xa80 [i2c_cros_ec_tunnel 3a00532f3f4af4a9eade753f86b0f8dd4e4e5698]
[ 272.182617] do_one_initcall+0x110/0x350
[ 272.186543] ? security_kernfs_init_security+0x49/0xd0
[ 272.191682] ? __kernfs_new_node+0x1b9/0x240
[ 272.195954] ? security_kernfs_init_security+0x49/0xd0
[ 272.201093] ? __kernfs_new_node+0x1b9/0x240
[ 272.205365] ? kernfs_link_sibling+0x105/0x130
[ 272.209810] ? kernfs_next_descendant_post+0x1c/0xa0
[ 272.214773] ? kernfs_activate+0x57/0x70
[ 272.218699] ? kernfs_add_one+0x118/0x160
[ 272.222710] ? __kernfs_create_file+0x71/0xa0
[ 272.227069] ? sysfs_add_bin_file_mode_ns+0xd6/0x110
[ 272.232033] ? internal_create_group+0x453/0x4a0
[ 272.236651] ? __vunmap_range_noflush+0x214/0x2d0
[ 272.241355] ? __free_frozen_pages+0x1dc/0x420
[ 272.245799] ? free_vmap_area_noflush+0x10a/0x1c0
[ 272.250505] ? load_module+0x1509/0x16f0
[ 272.254431] do_init_module+0x60/0x230
[ 272.258181] __se_sys_finit_module+0x27a/0x370
[ 272.262627] do_syscall_64+0x6a/0xf0
[ 272.266206] ? do_syscall_64+0x76/0xf0
[ 272.269956] ? irqentry_exit_to_user_mode+0x79/0x90
[ 272.274836] entry_SYSCALL_64_after_hwframe+0x55/0x5d
[ 272.279887] RIP: 0033:0x7b9309168d39
[ 272.283466] Code: 5b 41 5c 5d c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d af 40 0c 00 f7 d8 64 89 01 8
[ 272.302210] RSP: 002b:00007fff50f1a288 EFLAGS: 00000246 ORIG_RAX: 000
---truncated---
CVSS Score
5.5
EPSS Score
0.002
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
drm/msm/dpu: Fix error pointers in dpu_plane_virtual_atomic_check
The function dpu_plane_virtual_atomic_check was dereferencing pointers
returned by drm_atomic_get_plane_state without checking for errors. This
could lead to undefined behavior if the function returns an error pointer.
This commit adds checks using IS_ERR to ensure that plane_state is
valid before dereferencing them.
Similar to commit da29abe71e16
("drm/amd/display: Fix error pointers in amdgpu_dm_crtc_mem_type_changed").
Patchwork: https://patchwork.freedesktop.org/patch/643132/
CVSS Score
5.5
EPSS Score
0.001
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
net: ti: icss-iep: Fix possible NULL pointer dereference for perout request
The ICSS IEP driver tracks perout and pps enable state with flags.
Currently when disabling pps and perout signals during icss_iep_exit(),
results in NULL pointer dereference for perout.
To fix the null pointer dereference issue, the icss_iep_perout_enable_hw
function can be modified to directly clear the IEP CMP registers when
disabling PPS or PEROUT, without referencing the ptp_perout_request
structure, as its contents are irrelevant in this case.
CVSS Score
5.5
EPSS Score
0.001
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
net: dsa: free routing table on probe failure
If complete = true in dsa_tree_setup(), it means that we are the last
switch of the tree which is successfully probing, and we should be
setting up all switches from our probe path.
After "complete" becomes true, dsa_tree_setup_cpu_ports() or any
subsequent function may fail. If that happens, the entire tree setup is
in limbo: the first N-1 switches have successfully finished probing
(doing nothing but having allocated persistent memory in the tree's
dst->ports, and maybe dst->rtable), and switch N failed to probe, ending
the tree setup process before anything is tangible from the user's PoV.
If switch N fails to probe, its memory (ports) will be freed and removed
from dst->ports. However, the dst->rtable elements pointing to its ports,
as created by dsa_link_touch(), will remain there, and will lead to
use-after-free if dereferenced.
If dsa_tree_setup_switches() returns -EPROBE_DEFER, which is entirely
possible because that is where ds->ops->setup() is, we get a kasan
report like this:
==================================================================
BUG: KASAN: slab-use-after-free in mv88e6xxx_setup_upstream_port+0x240/0x568
Read of size 8 at addr ffff000004f56020 by task kworker/u8:3/42
Call trace:
__asan_report_load8_noabort+0x20/0x30
mv88e6xxx_setup_upstream_port+0x240/0x568
mv88e6xxx_setup+0xebc/0x1eb0
dsa_register_switch+0x1af4/0x2ae0
mv88e6xxx_register_switch+0x1b8/0x2a8
mv88e6xxx_probe+0xc4c/0xf60
mdio_probe+0x78/0xb8
really_probe+0x2b8/0x5a8
__driver_probe_device+0x164/0x298
driver_probe_device+0x78/0x258
__device_attach_driver+0x274/0x350
Allocated by task 42:
__kasan_kmalloc+0x84/0xa0
__kmalloc_cache_noprof+0x298/0x490
dsa_switch_touch_ports+0x174/0x3d8
dsa_register_switch+0x800/0x2ae0
mv88e6xxx_register_switch+0x1b8/0x2a8
mv88e6xxx_probe+0xc4c/0xf60
mdio_probe+0x78/0xb8
really_probe+0x2b8/0x5a8
__driver_probe_device+0x164/0x298
driver_probe_device+0x78/0x258
__device_attach_driver+0x274/0x350
Freed by task 42:
__kasan_slab_free+0x48/0x68
kfree+0x138/0x418
dsa_register_switch+0x2694/0x2ae0
mv88e6xxx_register_switch+0x1b8/0x2a8
mv88e6xxx_probe+0xc4c/0xf60
mdio_probe+0x78/0xb8
really_probe+0x2b8/0x5a8
__driver_probe_device+0x164/0x298
driver_probe_device+0x78/0x258
__device_attach_driver+0x274/0x350
The simplest way to fix the bug is to delete the routing table in its
entirety. dsa_tree_setup_routing_table() has no problem in regenerating
it even if we deleted links between ports other than those of switch N,
because dsa_link_touch() first checks whether the port pair already
exists in dst->rtable, allocating if not.
The deletion of the routing table in its entirety already exists in
dsa_tree_teardown(), so refactor that into a function that can also be
called from the tree setup error path.
In my analysis of the commit to blame, it is the one which added
dsa_link elements to dst->rtable. Prior to that, each switch had its own
ds->rtable which is freed when the switch fails to probe. But the tree
is potentially persistent memory.
CVSS Score
7.8
EPSS Score
0.002
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix the warning from __kernel_write_iter
[ 2110.972290] ------------[ cut here ]------------
[ 2110.972301] WARNING: CPU: 3 PID: 735 at fs/read_write.c:599 __kernel_write_iter+0x21b/0x280
This patch doesn't allow writing to directory.
CVSS Score
5.5
EPSS Score
0.002
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
There is a room in smb_break_all_levII_oplock that can cause racy issues
when unlocking in the middle of the loop. This patch use read lock
to protect whole loop.
CVSS Score
7.0
EPSS Score
0.001
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in __smb2_lease_break_noti()
Move tcp_transport free to ksmbd_conn_free. If ksmbd connection is
referenced when ksmbd server thread terminates, It will not be freed,
but conn->tcp_transport is freed. __smb2_lease_break_noti can be performed
asynchronously when the connection is disconnected. __smb2_lease_break_noti
calls ksmbd_conn_write, which can cause use-after-free
when conn->ksmbd_transport is already freed.
CVSS Score
7.8
EPSS Score
0.002
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: Fix dangling pointer in krb_authenticate
krb_authenticate frees sess->user and does not set the pointer
to NULL. It calls ksmbd_krb5_authenticate to reinitialise
sess->user but that function may return without doing so. If
that happens then smb2_sess_setup, which calls krb_authenticate,
will be accessing free'd memory when it later uses sess->user.
CVSS Score
7.8
EPSS Score
0.005
Published
2025-05-01
In the Linux kernel, the following vulnerability has been resolved:
lib/iov_iter: fix to increase non slab folio refcount
When testing EROFS file-backed mount over v9fs on qemu, I encountered a
folio UAF issue. The page sanity check reports the following call trace.
The root cause is that pages in bvec are coalesced across a folio bounary.
The refcount of all non-slab folios should be increased to ensure
p9_releas_pages can put them correctly.
BUG: Bad page state in process md5sum pfn:18300
page: refcount:0 mapcount:0 mapping:00000000d5ad8e4e index:0x60 pfn:0x18300
head: order:0 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
aops:z_erofs_aops ino:30b0f dentry name(?):"GoogleExtServicesCn.apk"
flags: 0x100000000000041(locked|head|node=0|zone=1)
raw: 0100000000000041 dead000000000100 dead000000000122 ffff888014b13bd0
raw: 0000000000000060 0000000000000020 00000000ffffffff 0000000000000000
head: 0100000000000041 dead000000000100 dead000000000122 ffff888014b13bd0
head: 0000000000000060 0000000000000020 00000000ffffffff 0000000000000000
head: 0100000000000000 0000000000000000 ffffffffffffffff 0000000000000000
head: 0000000000000010 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
Call Trace:
dump_stack_lvl+0x53/0x70
bad_page+0xd4/0x220
__free_pages_ok+0x76d/0xf30
__folio_put+0x230/0x320
p9_release_pages+0x179/0x1f0
p9_virtio_zc_request+0xa2a/0x1230
p9_client_zc_rpc.constprop.0+0x247/0x700
p9_client_read_once+0x34d/0x810
p9_client_read+0xf3/0x150
v9fs_issue_read+0x111/0x360
netfs_unbuffered_read_iter_locked+0x927/0x1390
netfs_unbuffered_read_iter+0xa2/0xe0
vfs_iocb_iter_read+0x2c7/0x460
erofs_fileio_rq_submit+0x46b/0x5b0
z_erofs_runqueue+0x1203/0x21e0
z_erofs_readahead+0x579/0x8b0
read_pages+0x19f/0xa70
page_cache_ra_order+0x4ad/0xb80
filemap_readahead.isra.0+0xe7/0x150
filemap_get_pages+0x7aa/0x1890
filemap_read+0x320/0xc80
vfs_read+0x6c6/0xa30
ksys_read+0xf9/0x1c0
do_syscall_64+0x9e/0x1a0
entry_SYSCALL_64_after_hwframe+0x71/0x79
CVSS Score
5.5
EPSS Score
0.001
Published
2025-05-01