| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
ipv6: fix lockdep splat in in6_dump_addrs()
As reported by syzbot, we should not use rcu_dereference()
when rcu_read_lock() is not held.
WARNING: suspicious RCU usage
5.19.0-rc2-syzkaller #0 Not tainted
net/ipv6/addrconf.c:5175 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
1 lock held by syz-executor326/3617:
#0: ffffffff8d5848e8 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0xae/0xc20 net/netlink/af_netlink.c:2223
stack backtrace:
CPU: 0 PID: 3617 Comm: syz-executor326 Not tainted 5.19.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
in6_dump_addrs+0x12d1/0x1790 net/ipv6/addrconf.c:5175
inet6_dump_addr+0x9c1/0xb50 net/ipv6/addrconf.c:5300
netlink_dump+0x541/0xc20 net/netlink/af_netlink.c:2275
__netlink_dump_start+0x647/0x900 net/netlink/af_netlink.c:2380
netlink_dump_start include/linux/netlink.h:245 [inline]
rtnetlink_rcv_msg+0x73e/0xc90 net/core/rtnetlink.c:6046
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:734
____sys_sendmsg+0x6eb/0x810 net/socket.c:2492
___sys_sendmsg+0xf3/0x170 net/socket.c:2546
__sys_sendmsg net/socket.c:2575 [inline]
__do_sys_sendmsg net/socket.c:2584 [inline]
__se_sys_sendmsg net/socket.c:2582 [inline]
__x64_sys_sendmsg+0x132/0x220 net/socket.c:2582
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0 |
| In the Linux kernel, the following vulnerability has been resolved:
staging: media: max96712: fix kernel oops when removing module
The following kernel oops is thrown when trying to remove the max96712
module:
Unable to handle kernel paging request at virtual address 00007375746174db
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
user pgtable: 4k pages, 48-bit VAs, pgdp=000000010af89000
[00007375746174db] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in: crct10dif_ce polyval_ce mxc_jpeg_encdec flexcan
snd_soc_fsl_sai snd_soc_fsl_asoc_card snd_soc_fsl_micfil dwc_mipi_csi2
imx_csi_formatter polyval_generic v4l2_jpeg imx_pcm_dma can_dev
snd_soc_imx_audmux snd_soc_wm8962 snd_soc_imx_card snd_soc_fsl_utils
max96712(C-) rpmsg_ctrl rpmsg_char pwm_fan fuse
[last unloaded: imx8_isi]
CPU: 0 UID: 0 PID: 754 Comm: rmmod
Tainted: G C 6.12.0-rc6-06364-g327fec852c31 #17
Tainted: [C]=CRAP
Hardware name: NXP i.MX95 19X19 board (DT)
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : led_put+0x1c/0x40
lr : v4l2_subdev_put_privacy_led+0x48/0x58
sp : ffff80008699bbb0
x29: ffff80008699bbb0 x28: ffff00008ac233c0 x27: 0000000000000000
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000
x23: ffff000080cf1170 x22: ffff00008b53bd00 x21: ffff8000822ad1c8
x20: ffff000080ff5c00 x19: ffff00008b53be40 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000004 x13: ffff0000800f8010 x12: 0000000000000000
x11: ffff000082acf5c0 x10: ffff000082acf478 x9 : ffff0000800f8010
x8 : 0101010101010101 x7 : 7f7f7f7f7f7f7f7f x6 : fefefeff6364626d
x5 : 8080808000000000 x4 : 0000000000000020 x3 : 00000000553a3dc1
x2 : ffff00008ac233c0 x1 : ffff00008ac233c0 x0 : ff00737574617473
Call trace:
led_put+0x1c/0x40
v4l2_subdev_put_privacy_led+0x48/0x58
v4l2_async_unregister_subdev+0x2c/0x1a4
max96712_remove+0x1c/0x38 [max96712]
i2c_device_remove+0x2c/0x9c
device_remove+0x4c/0x80
device_release_driver_internal+0x1cc/0x228
driver_detach+0x4c/0x98
bus_remove_driver+0x6c/0xbc
driver_unregister+0x30/0x60
i2c_del_driver+0x54/0x64
max96712_i2c_driver_exit+0x18/0x1d0 [max96712]
__arm64_sys_delete_module+0x1a4/0x290
invoke_syscall+0x48/0x10c
el0_svc_common.constprop.0+0xc0/0xe0
do_el0_svc+0x1c/0x28
el0_svc+0x34/0xd8
el0t_64_sync_handler+0x120/0x12c
el0t_64_sync+0x190/0x194
Code: f9000bf3 aa0003f3 f9402800 f9402000 (f9403400)
---[ end trace 0000000000000000 ]---
This happens because in v4l2_i2c_subdev_init(), the i2c_set_cliendata()
is called again and the data is overwritten to point to sd, instead of
priv. So, in remove(), the wrong pointer is passed to
v4l2_async_unregister_subdev(), leading to a crash. |
| In the Linux kernel, the following vulnerability has been resolved:
ocfs2: strict bound check before memcmp in ocfs2_xattr_find_entry()
xattr in ocfs2 maybe 'non-indexed', which saved with additional space
requested. It's better to check if the memory is out of bound before
memcmp, although this possibility mainly comes from crafted poisonous
images. |
| In the Linux kernel, the following vulnerability has been resolved:
misc: misc_minor_alloc to use ida for all dynamic/misc dynamic minors
misc_minor_alloc was allocating id using ida for minor only in case of
MISC_DYNAMIC_MINOR but misc_minor_free was always freeing ids
using ida_free causing a mismatch and following warn:
> > WARNING: CPU: 0 PID: 159 at lib/idr.c:525 ida_free+0x3e0/0x41f
> > ida_free called for id=127 which is not allocated.
> > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
...
> > [<60941eb4>] ida_free+0x3e0/0x41f
> > [<605ac993>] misc_minor_free+0x3e/0xbc
> > [<605acb82>] misc_deregister+0x171/0x1b3
misc_minor_alloc is changed to allocate id from ida for all minors
falling in the range of dynamic/ misc dynamic minors |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Fix resource leak in lpfc_sli4_send_seq_to_ulp()
If no handler is found in lpfc_complete_unsol_iocb() to match the rctl of a
received frame, the frame is dropped and resources are leaked.
Fix by returning resources when discarding an unhandled frame type. Update
lpfc_fc_frame_check() handling of NOP basic link service. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/msm: don't free the IRQ if it was not requested
As msm_drm_uninit() is called from the msm_drm_init() error path,
additional care should be necessary as not to call the free_irq() for
the IRQ that was not requested before (because an error occured earlier
than the request_irq() call).
This fixed the issue reported with the following backtrace:
[ 8.571329] Trying to free already-free IRQ 187
[ 8.571339] WARNING: CPU: 0 PID: 76 at kernel/irq/manage.c:1895 free_irq+0x1e0/0x35c
[ 8.588746] Modules linked in: pmic_glink pdr_interface fastrpc qrtr_smd snd_soc_hdmi_codec msm fsa4480 gpu_sched drm_dp_aux_bus qrtr i2c_qcom_geni crct10dif_ce qcom_stats qcom_q6v5_pas drm_display_helper gpi qcom_pil_info drm_kms_helper qcom_q6v5 qcom_sysmon qcom_common qcom_glink_smem qcom_rng mdt_loader qmi_helpers phy_qcom_qmp ufs_qcom typec qnoc_sm8350 socinfo rmtfs_mem fuse drm ipv6
[ 8.624154] CPU: 0 PID: 76 Comm: kworker/u16:2 Not tainted 5.18.0-rc5-next-20220506-00033-g6cee8cab6089-dirty #419
[ 8.624161] Hardware name: Qualcomm Technologies, Inc. SM8350 HDK (DT)
[ 8.641496] Workqueue: events_unbound deferred_probe_work_func
[ 8.647510] pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 8.654681] pc : free_irq+0x1e0/0x35c
[ 8.658454] lr : free_irq+0x1e0/0x35c
[ 8.662228] sp : ffff800008ab3950
[ 8.665642] x29: ffff800008ab3950 x28: 0000000000000000 x27: ffff16350f56a700
[ 8.672994] x26: ffff1635025df080 x25: ffff16350251badc x24: ffff16350251bb90
[ 8.680343] x23: 0000000000000000 x22: 00000000000000bb x21: ffff16350e8f9800
[ 8.687690] x20: ffff16350251ba00 x19: ffff16350cbd5880 x18: ffffffffffffffff
[ 8.695039] x17: 0000000000000000 x16: ffffa2dd12179434 x15: ffffa2dd1431d02d
[ 8.702391] x14: 0000000000000000 x13: ffffa2dd1431d028 x12: 662d79646165726c
[ 8.709740] x11: ffffa2dd13fd2438 x10: 000000000000000a x9 : 00000000000000bb
[ 8.717111] x8 : ffffa2dd13fd23f0 x7 : ffff800008ab3750 x6 : 00000000fffff202
[ 8.724487] x5 : ffff16377e870a18 x4 : 00000000fffff202 x3 : ffff735a6ae1b000
[ 8.731851] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff1635015f8000
[ 8.739217] Call trace:
[ 8.741755] free_irq+0x1e0/0x35c
[ 8.745198] msm_drm_uninit.isra.0+0x14c/0x294 [msm]
[ 8.750548] msm_drm_bind+0x28c/0x5d0 [msm]
[ 8.755081] try_to_bring_up_aggregate_device+0x164/0x1d0
[ 8.760657] __component_add+0xa0/0x170
[ 8.764626] component_add+0x14/0x20
[ 8.768337] dp_display_probe+0x2a4/0x464 [msm]
[ 8.773242] platform_probe+0x68/0xe0
[ 8.777043] really_probe.part.0+0x9c/0x28c
[ 8.781368] __driver_probe_device+0x98/0x144
[ 8.785871] driver_probe_device+0x40/0x140
[ 8.790191] __device_attach_driver+0xb4/0x120
[ 8.794788] bus_for_each_drv+0x78/0xd0
[ 8.798751] __device_attach+0xdc/0x184
[ 8.802713] device_initial_probe+0x14/0x20
[ 8.807031] bus_probe_device+0x9c/0xa4
[ 8.810991] deferred_probe_work_func+0x88/0xc0
[ 8.815667] process_one_work+0x1d0/0x320
[ 8.819809] worker_thread+0x14c/0x444
[ 8.823688] kthread+0x10c/0x110
[ 8.827036] ret_from_fork+0x10/0x20
Patchwork: https://patchwork.freedesktop.org/patch/485422/ |
| In the Linux kernel, the following vulnerability has been resolved:
ntfs: add sanity check on allocation size
ntfs_read_inode_mount invokes ntfs_malloc_nofs with zero allocation
size. It triggers one BUG in the __ntfs_malloc function.
Fix this by adding sanity check on ni->attr_list_size. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/plane: Move range check for format_count earlier
While the check for format_count > 64 in __drm_universal_plane_init()
shouldn't be hit (it's a WARN_ON), in its current position it will then
leak the plane->format_types array and fail to call
drm_mode_object_unregister() leaking the modeset identifier. Move it to
the start of the function to avoid allocating those resources in the
first place. |
| In the Linux kernel, the following vulnerability has been resolved:
firmware: qcom: scm: Cleanup global '__scm' on probe failures
If SCM driver fails the probe, it should not leave global '__scm'
variable assigned, because external users of this driver will assume the
probe finished successfully. For example TZMEM parts ('__scm->mempool')
are initialized later in the probe, but users of it (__scm_smc_call())
rely on the '__scm' variable.
This fixes theoretical NULL pointer exception, triggered via introducing
probe deferral in SCM driver with call trace:
qcom_tzmem_alloc+0x70/0x1ac (P)
qcom_tzmem_alloc+0x64/0x1ac (L)
qcom_scm_assign_mem+0x78/0x194
qcom_rmtfs_mem_probe+0x2d4/0x38c
platform_probe+0x68/0xc8 |
| In the Linux kernel, the following vulnerability has been resolved:
um: vector: Do not use drvdata in release
The drvdata is not available in release. Let's just use container_of()
to get the vector_device instance. Otherwise, removing a vector device
will result in a crash:
RIP: 0033:vector_device_release+0xf/0x50
RSP: 00000000e187bc40 EFLAGS: 00010202
RAX: 0000000060028f61 RBX: 00000000600f1baf RCX: 00000000620074e0
RDX: 000000006220b9c0 RSI: 0000000060551c80 RDI: 0000000000000000
RBP: 00000000e187bc50 R08: 00000000603ad594 R09: 00000000e187bb70
R10: 000000000000135a R11: 00000000603ad422 R12: 00000000623ae028
R13: 000000006287a200 R14: 0000000062006d30 R15: 00000000623700b6
Kernel panic - not syncing: Segfault with no mm
CPU: 0 UID: 0 PID: 16 Comm: kworker/0:1 Not tainted 6.12.0-rc6-g59b723cd2adb #1
Workqueue: events mc_work_proc
Stack:
60028f61 623ae028 e187bc80 60276fcd
6220b9c0 603f5820 623ae028 00000000
e187bcb0 603a2bcd 623ae000 62370010
Call Trace:
[<60028f61>] ? vector_device_release+0x0/0x50
[<60276fcd>] device_release+0x70/0xba
[<603a2bcd>] kobject_put+0xba/0xe7
[<60277265>] put_device+0x19/0x1c
[<60281266>] platform_device_put+0x26/0x29
[<60281e5f>] platform_device_unregister+0x2c/0x2e
[<60029422>] vector_remove+0x52/0x58
[<60031316>] ? mconsole_reply+0x0/0x50
[<600310c8>] mconsole_remove+0x160/0x1cc
[<603b19f4>] ? strlen+0x0/0x15
[<60066611>] ? __dequeue_entity+0x1a9/0x206
[<600666a7>] ? set_next_entity+0x39/0x63
[<6006666e>] ? set_next_entity+0x0/0x63
[<60038fa6>] ? um_set_signals+0x0/0x43
[<6003070c>] mc_work_proc+0x77/0x91
[<60057664>] process_scheduled_works+0x1b3/0x2dd
[<60055f32>] ? assign_work+0x0/0x58
[<60057f0a>] worker_thread+0x1e9/0x293
[<6005406f>] ? set_pf_worker+0x0/0x64
[<6005d65d>] ? arch_local_irq_save+0x0/0x2d
[<6005d748>] ? kthread_exit+0x0/0x3a
[<60057d21>] ? worker_thread+0x0/0x293
[<6005dbf1>] kthread+0x126/0x12b
[<600219c5>] new_thread_handler+0x85/0xb6 |
| In the Linux kernel, the following vulnerability has been resolved:
comedi: comedi_8255: Correct error in subdevice initialization
The refactoring done in commit 5c57b1ccecc7 ("comedi: comedi_8255: Rework
subdevice initialization functions") to the initialization of the io
field of struct subdev_8255_private broke all cards using the
drivers/comedi/drivers/comedi_8255.c module.
Prior to 5c57b1ccecc7, __subdev_8255_init() initialized the io field
in the newly allocated struct subdev_8255_private to the non-NULL
callback given to the function, otherwise it used a flag parameter to
select between subdev_8255_mmio and subdev_8255_io. The refactoring
removed that logic and the flag, as subdev_8255_mm_init() and
subdev_8255_io_init() now explicitly pass subdev_8255_mmio and
subdev_8255_io respectively to __subdev_8255_init(), only
__subdev_8255_init() never sets spriv->io to the supplied
callback. That spriv->io is NULL leads to a later BUG:
BUG: kernel NULL pointer dereference, address: 0000000000000000
PGD 0 P4D 0
Oops: 0010 [#1] SMP PTI
CPU: 1 PID: 1210 Comm: systemd-udevd Not tainted 6.7.3-x86_64 #1
Hardware name: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffa3f1c02d7b78 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffff91f847aefd00 RCX: 000000000000009b
RDX: 0000000000000003 RSI: 0000000000000001 RDI: ffff91f840f6fc00
RBP: ffff91f840f6fc00 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 000000000000005f R12: 0000000000000000
R13: 0000000000000000 R14: ffffffffc0102498 R15: ffff91f847ce6ba8
FS: 00007f72f4e8f500(0000) GS:ffff91f8d5c80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000010540e000 CR4: 00000000000406f0
Call Trace:
<TASK>
? __die_body+0x15/0x57
? page_fault_oops+0x2ef/0x33c
? insert_vmap_area.constprop.0+0xb6/0xd5
? alloc_vmap_area+0x529/0x5ee
? exc_page_fault+0x15a/0x489
? asm_exc_page_fault+0x22/0x30
__subdev_8255_init+0x79/0x8d [comedi_8255]
pci_8255_auto_attach+0x11a/0x139 [8255_pci]
comedi_auto_config+0xac/0x117 [comedi]
? __pfx___driver_attach+0x10/0x10
pci_device_probe+0x88/0xf9
really_probe+0x101/0x248
__driver_probe_device+0xbb/0xed
driver_probe_device+0x1a/0x72
__driver_attach+0xd4/0xed
bus_for_each_dev+0x76/0xb8
bus_add_driver+0xbe/0x1be
driver_register+0x9a/0xd8
comedi_pci_driver_register+0x28/0x48 [comedi_pci]
? __pfx_pci_8255_driver_init+0x10/0x10 [8255_pci]
do_one_initcall+0x72/0x183
do_init_module+0x5b/0x1e8
init_module_from_file+0x86/0xac
__do_sys_finit_module+0x151/0x218
do_syscall_64+0x72/0xdb
entry_SYSCALL_64_after_hwframe+0x6e/0x76
RIP: 0033:0x7f72f50a0cb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 47 71 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd47e512d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 0000562dd06ae070 RCX: 00007f72f50a0cb9
RDX: 0000000000000000 RSI: 00007f72f52d32df RDI: 000000000000000e
RBP: 0000000000000000 R08: 00007f72f5168b20 R09: 0000000000000000
R10: 0000000000000050 R11: 0000000000000246 R12: 00007f72f52d32df
R13: 0000000000020000 R14: 0000562dd06785c0 R15: 0000562dcfd0e9a8
</TASK>
Modules linked in: 8255_pci(+) comedi_8255 comedi_pci comedi intel_gtt e100(+) acpi_cpufreq rtc_cmos usbhid
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffa3f1c02d7b78 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffff91f847aefd00 RCX: 000000000000009b
RDX: 0000000000000003 RSI: 0000000000000001 RDI: ffff91f840f6fc00
RBP: ffff91f840f6fc00 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 000000000000005f R12: 0000000000000000
R13: 0000000000000000 R14: ffffffffc0102498 R15: ffff91f847ce6ba8
FS:
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
tty: goldfish: Use tty_port_destroy() to destroy port
In goldfish_tty_probe(), the port initialized through tty_port_init()
should be destroyed in error paths.In goldfish_tty_remove(), qtty->port
also should be destroyed or else might leak resources.
Fix the above by calling tty_port_destroy(). |
| In the Linux kernel, the following vulnerability has been resolved:
KVM: VMX: Prevent RSB underflow before vmenter
On VMX, there are some balanced returns between the time the guest's
SPEC_CTRL value is written, and the vmenter.
Balanced returns (matched by a preceding call) are usually ok, but it's
at least theoretically possible an NMI with a deep call stack could
empty the RSB before one of the returns.
For maximum paranoia, don't allow *any* returns (balanced or otherwise)
between the SPEC_CTRL write and the vmenter.
[ bp: Fix 32-bit build. ] |
| In the Linux kernel, the following vulnerability has been resolved:
ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
if (!type)
continue;
if (type > RTAX_MAX)
return false;
...
fi_val = fi->fib_metrics->metrics[type - 1];
@type being used as an array index, we need to prevent
cpu speculation or risk leaking kernel memory content. |
| In the Linux kernel, the following vulnerability has been resolved:
bpf: sync_linked_regs() must preserve subreg_def
Range propagation must not affect subreg_def marks, otherwise the
following example is rewritten by verifier incorrectly when
BPF_F_TEST_RND_HI32 flag is set:
0: call bpf_ktime_get_ns call bpf_ktime_get_ns
1: r0 &= 0x7fffffff after verifier r0 &= 0x7fffffff
2: w1 = w0 rewrites w1 = w0
3: if w0 < 10 goto +0 --------------> r11 = 0x2f5674a6 (r)
4: r1 >>= 32 r11 <<= 32 (r)
5: r0 = r1 r1 |= r11 (r)
6: exit; if w0 < 0xa goto pc+0
r1 >>= 32
r0 = r1
exit
(or zero extension of w1 at (2) is missing for architectures that
require zero extension for upper register half).
The following happens w/o this patch:
- r0 is marked as not a subreg at (0);
- w1 is marked as subreg at (2);
- w1 subreg_def is overridden at (3) by copy_register_state();
- w1 is read at (5) but mark_insn_zext() does not mark (2)
for zero extension, because w1 subreg_def is not set;
- because of BPF_F_TEST_RND_HI32 flag verifier inserts random
value for hi32 bits of (2) (marked (r));
- this random value is read at (5). |
| In the Linux kernel, the following vulnerability has been resolved:
net: sparx5: Fix use after free inside sparx5_del_mact_entry
Based on the static analyzis of the code it looks like when an entry
from the MAC table was removed, the entry was still used after being
freed. More precise the vid of the mac_entry was used after calling
devm_kfree on the mac_entry.
The fix consists in first using the vid of the mac_entry to delete the
entry from the HW and after that to free it. |
| In the Linux kernel, the following vulnerability has been resolved:
riscv/kprobe: Fix instruction simulation of JALR
Set kprobe at 'jalr 1140(ra)' of vfs_write results in the following
crash:
[ 32.092235] Unable to handle kernel access to user memory without uaccess routines at virtual address 00aaaaaad77b1170
[ 32.093115] Oops [#1]
[ 32.093251] Modules linked in:
[ 32.093626] CPU: 0 PID: 135 Comm: ftracetest Not tainted 6.2.0-rc2-00013-gb0aa5e5df0cb-dirty #16
[ 32.093985] Hardware name: riscv-virtio,qemu (DT)
[ 32.094280] epc : ksys_read+0x88/0xd6
[ 32.094855] ra : ksys_read+0xc0/0xd6
[ 32.095016] epc : ffffffff801cda80 ra : ffffffff801cdab8 sp : ff20000000d7bdc0
[ 32.095227] gp : ffffffff80f14000 tp : ff60000080f9cb40 t0 : ffffffff80f13e80
[ 32.095500] t1 : ffffffff8000c29c t2 : ffffffff800dbc54 s0 : ff20000000d7be60
[ 32.095716] s1 : 0000000000000000 a0 : ffffffff805a64ae a1 : ffffffff80a83708
[ 32.095921] a2 : ffffffff80f160a0 a3 : 0000000000000000 a4 : f229b0afdb165300
[ 32.096171] a5 : f229b0afdb165300 a6 : ffffffff80eeebd0 a7 : 00000000000003ff
[ 32.096411] s2 : ff6000007ff76800 s3 : fffffffffffffff7 s4 : 00aaaaaad77b1170
[ 32.096638] s5 : ffffffff80f160a0 s6 : ff6000007ff76800 s7 : 0000000000000030
[ 32.096865] s8 : 00ffffffc3d97be0 s9 : 0000000000000007 s10: 00aaaaaad77c9410
[ 32.097092] s11: 0000000000000000 t3 : ffffffff80f13e48 t4 : ffffffff8000c29c
[ 32.097317] t5 : ffffffff8000c29c t6 : ffffffff800dbc54
[ 32.097505] status: 0000000200000120 badaddr: 00aaaaaad77b1170 cause: 000000000000000d
[ 32.098011] [<ffffffff801cdb72>] ksys_write+0x6c/0xd6
[ 32.098222] [<ffffffff801cdc06>] sys_write+0x2a/0x38
[ 32.098405] [<ffffffff80003c76>] ret_from_syscall+0x0/0x2
Since the rs1 and rd might be the same one, such as 'jalr 1140(ra)',
hence it requires obtaining the target address from rs1 followed by
updating rd.
[Palmer: Pick Guo's cleanup] |
| In the Linux kernel, the following vulnerability has been resolved:
dmaengine: xilinx: xdma: Fix data synchronisation in xdma_channel_isr()
Requests the vchan lock before using xdma->stop_request. |
| In the Linux kernel, the following vulnerability has been resolved:
jfs: add check read-only before truncation in jfs_truncate_nolock()
Added a check for "read-only" mode in the `jfs_truncate_nolock`
function to avoid errors related to writing to a read-only
filesystem.
Call stack:
block_write_begin() {
jfs_write_failed() {
jfs_truncate() {
jfs_truncate_nolock() {
txEnd() {
...
log = JFS_SBI(tblk->sb)->log;
// (log == NULL)
If the `isReadOnly(ip)` condition is triggered in
`jfs_truncate_nolock`, the function execution will stop, and no
further data modification will occur. Instead, the `xtTruncate`
function will be called with the "COMMIT_WMAP" flag, preventing
modifications in "read-only" mode. |
| In the Linux kernel, the following vulnerability has been resolved:
ubi: fastmap: Fix duplicate slab cache names while attaching
Since commit 4c39529663b9 ("slab: Warn on duplicate cache names when
DEBUG_VM=y"), the duplicate slab cache names can be detected and a
kernel WARNING is thrown out.
In UBI fast attaching process, alloc_ai() could be invoked twice
with the same slab cache name 'ubi_aeb_slab_cache', which will trigger
following warning messages:
kmem_cache of name 'ubi_aeb_slab_cache' already exists
WARNING: CPU: 0 PID: 7519 at mm/slab_common.c:107
__kmem_cache_create_args+0x100/0x5f0
Modules linked in: ubi(+) nandsim [last unloaded: nandsim]
CPU: 0 UID: 0 PID: 7519 Comm: modprobe Tainted: G 6.12.0-rc2
RIP: 0010:__kmem_cache_create_args+0x100/0x5f0
Call Trace:
__kmem_cache_create_args+0x100/0x5f0
alloc_ai+0x295/0x3f0 [ubi]
ubi_attach+0x3c3/0xcc0 [ubi]
ubi_attach_mtd_dev+0x17cf/0x3fa0 [ubi]
ubi_init+0x3fb/0x800 [ubi]
do_init_module+0x265/0x7d0
__x64_sys_finit_module+0x7a/0xc0
The problem could be easily reproduced by loading UBI device by fastmap
with CONFIG_DEBUG_VM=y.
Fix it by using different slab names for alloc_ai() callers. |
