Linux: >> Linux Kernel >> 4.19.135 Security Vulnerabilities
In the Linux kernel, the following vulnerability has been resolved:
HID: steam: Prevent NULL pointer dereference in steam_{recv,send}_report
It is possible for a malicious device to forgo submitting a Feature
Report. The HID Steam driver presently makes no prevision for this
and de-references the 'struct hid_report' pointer obtained from the
HID devices without first checking its validity. Let's change that.
CVSS Score
5.5
EPSS Score
0.001
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix a data-race around bpf_jit_limit.
While reading bpf_jit_limit, it can be changed concurrently via sysctl,
WRITE_ONCE() in __do_proc_doulongvec_minmax(). The size of bpf_jit_limit
is long, so we need to add a paired READ_ONCE() to avoid load-tearing.
CVSS Score
4.7
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
ieee802154/adf7242: defer destroy_workqueue call
There is a possible race condition (use-after-free) like below
(FREE) | (USE)
adf7242_remove | adf7242_channel
cancel_delayed_work_sync |
destroy_workqueue (1) | adf7242_cmd_rx
| mod_delayed_work (2)
|
The root cause for this race is that the upper layer (ieee802154) is
unaware of this detaching event and the function adf7242_channel can
be called without any checks.
To fix this, we can add a flag write at the beginning of adf7242_remove
and add flag check in adf7242_channel. Or we can just defer the
destructive operation like other commit 3e0588c291d6 ("hamradio: defer
ax25 kfree after unregister_netdev") which let the
ieee802154_unregister_hw() to handle the synchronization. This patch
takes the second option.
runs")
CVSS Score
4.7
EPSS Score
0.0
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: clear optc underflow before turn off odm clock
[Why]
After ODM clock off, optc underflow bit will be kept there always and clear not work.
We need to clear that before clock off.
[How]
Clear that if have when clock off.
CVSS Score
7.8
EPSS Score
0.001
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
bpf: Don't redirect packets with invalid pkt_len
Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any
skbs, that is, the flow->head is null.
The root cause, as the [2] says, is because that bpf_prog_test_run_skb()
run a bpf prog which redirects empty skbs.
So we should determine whether the length of the packet modified by bpf
prog or others like bpf_prog_test is valid before forwarding it directly.
CVSS Score
7.8
EPSS Score
0.001
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
Input: iforce - wake up after clearing IFORCE_XMIT_RUNNING flag
syzbot is reporting hung task at __input_unregister_device() [1], for
iforce_close() waiting at wait_event_interruptible() with dev->mutex held
is blocking input_disconnect_device() from __input_unregister_device().
It seems that the cause is simply that commit c2b27ef672992a20 ("Input:
iforce - wait for command completion when closing the device") forgot to
call wake_up() after clear_bit().
Fix this problem by introducing a helper that calls clear_bit() followed
by wake_up_all().
CVSS Score
5.5
EPSS Score
0.001
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
staging: rtl8712: fix use after free bugs
_Read/Write_MACREG callbacks are NULL so the read/write_macreg_hdl()
functions don't do anything except free the "pcmd" pointer. It
results in a use after free. Delete them.
CVSS Score
7.8
EPSS Score
0.001
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
kcm: fix strp_init() order and cleanup
strp_init() is called just a few lines above this csk->sk_user_data
check, it also initializes strp->work etc., therefore, it is
unnecessary to call strp_done() to cancel the freshly initialized
work.
And if sk_user_data is already used by KCM, psock->strp should not be
touched, particularly strp->work state, so we need to move strp_init()
after the csk->sk_user_data check.
This also makes a lockdep warning reported by syzbot go away.
CVSS Score
5.5
EPSS Score
0.001
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected
When we are not connected to a channel, sending channel "switch"
announcement doesn't make any sense.
The BSS list is empty in that case. This causes the for loop in
cfg80211_get_bss() to be bypassed, so the function returns NULL
(check line 1424 of net/wireless/scan.c), causing the WARN_ON()
in ieee80211_ibss_csa_beacon() to get triggered (check line 500
of net/mac80211/ibss.c), which was consequently reported on the
syzkaller dashboard.
Thus, check if we have an existing connection before generating
the CSA beacon in ieee80211_ibss_finish_csa().
CVSS Score
5.5
EPSS Score
0.001
Published
2025-06-18
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (gpio-fan) Fix array out of bounds access
The driver does not check if the cooling state passed to
gpio_fan_set_cur_state() exceeds the maximum cooling state as
stored in fan_data->num_speeds. Since the cooling state is later
used as an array index in set_fan_speed(), an array out of bounds
access can occur.
This can be exploited by setting the state of the thermal cooling device
to arbitrary values, causing for example a kernel oops when unavailable
memory is accessed this way.
Example kernel oops:
[ 807.987276] Unable to handle kernel paging request at virtual address ffffff80d0588064
[ 807.987369] Mem abort info:
[ 807.987398] ESR = 0x96000005
[ 807.987428] EC = 0x25: DABT (current EL), IL = 32 bits
[ 807.987477] SET = 0, FnV = 0
[ 807.987507] EA = 0, S1PTW = 0
[ 807.987536] FSC = 0x05: level 1 translation fault
[ 807.987570] Data abort info:
[ 807.987763] ISV = 0, ISS = 0x00000005
[ 807.987801] CM = 0, WnR = 0
[ 807.987832] swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000001165000
[ 807.987872] [ffffff80d0588064] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000
[ 807.987961] Internal error: Oops: 96000005 [#1] PREEMPT SMP
[ 807.987992] Modules linked in: cmac algif_hash aes_arm64 algif_skcipher af_alg bnep hci_uart btbcm bluetooth ecdh_generic ecc 8021q garp stp llc snd_soc_hdmi_codec brcmfmac vc4 brcmutil cec drm_kms_helper snd_soc_core cfg80211 snd_compress bcm2835_codec(C) snd_pcm_dmaengine syscopyarea bcm2835_isp(C) bcm2835_v4l2(C) sysfillrect v4l2_mem2mem bcm2835_mmal_vchiq(C) raspberrypi_hwmon sysimgblt videobuf2_dma_contig videobuf2_vmalloc fb_sys_fops videobuf2_memops rfkill videobuf2_v4l2 videobuf2_common i2c_bcm2835 snd_bcm2835(C) videodev snd_pcm snd_timer snd mc vc_sm_cma(C) gpio_fan uio_pdrv_genirq uio drm fuse drm_panel_orientation_quirks backlight ip_tables x_tables ipv6
[ 807.988508] CPU: 0 PID: 1321 Comm: bash Tainted: G C 5.15.56-v8+ #1575
[ 807.988548] Hardware name: Raspberry Pi 3 Model B Rev 1.2 (DT)
[ 807.988574] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 807.988608] pc : set_fan_speed.part.5+0x34/0x80 [gpio_fan]
[ 807.988654] lr : gpio_fan_set_cur_state+0x34/0x50 [gpio_fan]
[ 807.988691] sp : ffffffc008cf3bd0
[ 807.988710] x29: ffffffc008cf3bd0 x28: ffffff80019edac0 x27: 0000000000000000
[ 807.988762] x26: 0000000000000000 x25: 0000000000000000 x24: ffffff800747c920
[ 807.988787] x23: 000000000000000a x22: ffffff800369f000 x21: 000000001999997c
[ 807.988854] x20: ffffff800369f2e8 x19: ffffff8002ae8080 x18: 0000000000000000
[ 807.988877] x17: 0000000000000000 x16: 0000000000000000 x15: 000000559e271b70
[ 807.988938] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 807.988960] x11: 0000000000000000 x10: ffffffc008cf3c20 x9 : ffffffcfb60c741c
[ 807.989018] x8 : 000000000000000a x7 : 00000000ffffffc9 x6 : 0000000000000009
[ 807.989040] x5 : 000000000000002a x4 : 0000000000000000 x3 : ffffff800369f2e8
[ 807.989062] x2 : 000000000000e780 x1 : 0000000000000001 x0 : ffffff80d0588060
[ 807.989084] Call trace:
[ 807.989091] set_fan_speed.part.5+0x34/0x80 [gpio_fan]
[ 807.989113] gpio_fan_set_cur_state+0x34/0x50 [gpio_fan]
[ 807.989199] cur_state_store+0x84/0xd0
[ 807.989221] dev_attr_store+0x20/0x38
[ 807.989262] sysfs_kf_write+0x4c/0x60
[ 807.989282] kernfs_fop_write_iter+0x130/0x1c0
[ 807.989298] new_sync_write+0x10c/0x190
[ 807.989315] vfs_write+0x254/0x378
[ 807.989362] ksys_write+0x70/0xf8
[ 807.989379] __arm64_sys_write+0x24/0x30
[ 807.989424] invoke_syscall+0x4c/0x110
[ 807.989442] el0_svc_common.constprop.3+0xfc/0x120
[ 807.989458] do_el0_svc+0x2c/0x90
[ 807.989473] el0_svc+0x24/0x60
[ 807.989544] el0t_64_sync_handler+0x90/0xb8
[ 807.989558] el0t_64_sync+0x1a0/0x1a4
[ 807.989579] Code: b9403801 f9402800 7100003f 8b35cc00 (b9400416)
[ 807.989627] ---[ end t
---truncated---
CVSS Score
7.1
EPSS Score
0.001
Published
2025-06-18