| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
jffs2: fix memory leak in jffs2_do_fill_super
If jffs2_iget() or d_make_root() in jffs2_do_fill_super() returns
an error, we can observe the following kmemleak report:
--------------------------------------------
unreferenced object 0xffff888105a65340 (size 64):
comm "mount", pid 710, jiffies 4302851558 (age 58.239s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff859c45e5>] kmem_cache_alloc_trace+0x475/0x8a0
[<ffffffff86160146>] jffs2_sum_init+0x96/0x1a0
[<ffffffff86140e25>] jffs2_do_mount_fs+0x745/0x2120
[<ffffffff86149fec>] jffs2_do_fill_super+0x35c/0x810
[<ffffffff8614aae9>] jffs2_fill_super+0x2b9/0x3b0
[...]
unreferenced object 0xffff8881bd7f0000 (size 65536):
comm "mount", pid 710, jiffies 4302851558 (age 58.239s)
hex dump (first 32 bytes):
bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
backtrace:
[<ffffffff858579ba>] kmalloc_order+0xda/0x110
[<ffffffff85857a11>] kmalloc_order_trace+0x21/0x130
[<ffffffff859c2ed1>] __kmalloc+0x711/0x8a0
[<ffffffff86160189>] jffs2_sum_init+0xd9/0x1a0
[<ffffffff86140e25>] jffs2_do_mount_fs+0x745/0x2120
[<ffffffff86149fec>] jffs2_do_fill_super+0x35c/0x810
[<ffffffff8614aae9>] jffs2_fill_super+0x2b9/0x3b0
[...]
--------------------------------------------
This is because the resources allocated in jffs2_sum_init() are not
released. Call jffs2_sum_exit() to release these resources to solve
the problem. |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: sd: Fix potential NULL pointer dereference
If sd_probe() sees an early error before sdkp->device is initialized,
sd_zbc_release_disk() is called. This causes a NULL pointer dereference
when sd_is_zoned() is called inside that function. Avoid this by removing
the call to sd_zbc_release_disk() in sd_probe() error path.
This change is safe and does not result in zone information memory leakage
because the zone information for a zoned disk is allocated only when
sd_revalidate_disk() is called, at which point sdkp->disk_dev is fully set,
resulting in sd_disk_release() being called when needed to cleanup a disk
zone information using sd_zbc_release_disk(). |
| In the Linux kernel, the following vulnerability has been resolved:
rtc: mt6397: check return value after calling platform_get_resource()
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value. |
| In the Linux kernel, the following vulnerability has been resolved:
tipc: check attribute length for bearer name
syzbot reported uninit-value:
=====================================================
BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:644 [inline]
BUG: KMSAN: uninit-value in string+0x4f9/0x6f0 lib/vsprintf.c:725
string_nocheck lib/vsprintf.c:644 [inline]
string+0x4f9/0x6f0 lib/vsprintf.c:725
vsnprintf+0x2222/0x3650 lib/vsprintf.c:2806
vprintk_store+0x537/0x2150 kernel/printk/printk.c:2158
vprintk_emit+0x28b/0xab0 kernel/printk/printk.c:2256
vprintk_default+0x86/0xa0 kernel/printk/printk.c:2283
vprintk+0x15f/0x180 kernel/printk/printk_safe.c:50
_printk+0x18d/0x1cf kernel/printk/printk.c:2293
tipc_enable_bearer net/tipc/bearer.c:371 [inline]
__tipc_nl_bearer_enable+0x2022/0x22a0 net/tipc/bearer.c:1033
tipc_nl_bearer_enable+0x6c/0xb0 net/tipc/bearer.c:1042
genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]
- Do sanity check the attribute length for TIPC_NLA_BEARER_NAME.
- Do not use 'illegal name' in printing message. |
| In the Linux kernel, the following vulnerability has been resolved:
watchdog: ts4800_wdt: Fix refcount leak in ts4800_wdt_probe
of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() in some error paths. |
| In the Linux kernel, the following vulnerability has been resolved:
driver core: fix deadlock in __device_attach
In __device_attach function, The lock holding logic is as follows:
...
__device_attach
device_lock(dev) // get lock dev
async_schedule_dev(__device_attach_async_helper, dev); // func
async_schedule_node
async_schedule_node_domain(func)
entry = kzalloc(sizeof(struct async_entry), GFP_ATOMIC);
/* when fail or work limit, sync to execute func, but
__device_attach_async_helper will get lock dev as
well, which will lead to A-A deadlock. */
if (!entry || atomic_read(&entry_count) > MAX_WORK) {
func;
else
queue_work_node(node, system_unbound_wq, &entry->work)
device_unlock(dev)
As shown above, when it is allowed to do async probes, because of
out of memory or work limit, async work is not allowed, to do
sync execute instead. it will lead to A-A deadlock because of
__device_attach_async_helper getting lock dev.
To fix the deadlock, move the async_schedule_dev outside device_lock,
as we can see, in async_schedule_node_domain, the parameter of
queue_work_node is system_unbound_wq, so it can accept concurrent
operations. which will also not change the code logic, and will
not lead to deadlock. |
| In the Linux kernel, the following vulnerability has been resolved:
firmware: dmi-sysfs: Fix memory leak in dmi_sysfs_register_handle
kobject_init_and_add() takes reference even when it fails.
According to the doc of kobject_init_and_add()
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object.
Fix this issue by calling kobject_put(). |
| In the Linux kernel, the following vulnerability has been resolved:
amt: fix possible memory leak in amt_rcv()
If an amt receives packets and it finds socket.
If it can't find a socket, it should free a received skb.
But it doesn't.
So, a memory leak would possibly occur. |
| In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: mtk_eth_soc: out of bounds read in mtk_hwlro_get_fdir_entry()
The "fsp->location" variable comes from user via ethtool_get_rxnfc().
Check that it is valid to prevent an out of bounds read. |
| In the Linux kernel, the following vulnerability has been resolved:
net: dsa: mv88e6xxx: Fix refcount leak in mv88e6xxx_mdios_register
of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
mv88e6xxx_mdio_register() pass the device node to of_mdiobus_register().
We don't need the device node after it.
Add missing of_node_put() to avoid refcount leak. |
| In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix reference count leak in smb_check_perm_dacl()
The issue happens in a specific path in smb_check_perm_dacl(). When
"id" and "uid" have the same value, the function simply jumps out of
the loop without decrementing the reference count of the object
"posix_acls", which is increased by get_acl() earlier. This may
result in memory leaks.
Fix it by decreasing the reference count of "posix_acls" before
jumping to label "check_access_bits". |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: Off by one in dm_dmub_outbox1_low_irq()
The > ARRAY_SIZE() should be >= ARRAY_SIZE() to prevent an out of bounds
access. |
| In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: memleak flow rule from commit path
Abort path release flow rule object, however, commit path does not.
Update code to destroy these objects before releasing the transaction. |
| In the Linux kernel, the following vulnerability has been resolved:
ata: pata_octeon_cf: Fix refcount leak in octeon_cf_probe
of_find_device_by_node() takes reference, we should use put_device()
to release it when not need anymore.
Add missing put_device() to avoid refcount leak. |
| In the Linux kernel, the following vulnerability has been resolved:
powerpc/papr_scm: don't requests stats with '0' sized stats buffer
Sachin reported [1] that on a POWER-10 lpar he is seeing a kernel panic being
reported with vPMEM when papr_scm probe is being called. The panic is of the
form below and is observed only with following option disabled(profile) for the
said LPAR 'Enable Performance Information Collection' in the HMC:
Kernel attempted to write user page (1c) - exploit attempt? (uid: 0)
BUG: Kernel NULL pointer dereference on write at 0x0000001c
Faulting instruction address: 0xc008000001b90844
Oops: Kernel access of bad area, sig: 11 [#1]
<snip>
NIP [c008000001b90844] drc_pmem_query_stats+0x5c/0x270 [papr_scm]
LR [c008000001b92794] papr_scm_probe+0x2ac/0x6ec [papr_scm]
Call Trace:
0xc00000000941bca0 (unreliable)
papr_scm_probe+0x2ac/0x6ec [papr_scm]
platform_probe+0x98/0x150
really_probe+0xfc/0x510
__driver_probe_device+0x17c/0x230
<snip>
---[ end trace 0000000000000000 ]---
Kernel panic - not syncing: Fatal exception
On investigation looks like this panic was caused due to a 'stat_buffer' of
size==0 being provided to drc_pmem_query_stats() to fetch all performance
stats-ids of an NVDIMM. However drc_pmem_query_stats() shouldn't have been called
since the vPMEM NVDIMM doesn't support and performance stat-id's. This was caused
due to missing check for 'p->stat_buffer_len' at the beginning of
papr_scm_pmu_check_events() which indicates that the NVDIMM doesn't support
performance-stats.
Fix this by introducing the check for 'p->stat_buffer_len' at the beginning of
papr_scm_pmu_check_events().
[1] https://lore.kernel.org/all/6B3A522A-6A5F-4CC9-B268-0C63AA6E07D3@linux.ibm.com |
| In the Linux kernel, the following vulnerability has been resolved:
net: altera: Fix refcount leak in altera_tse_mdio_create
Every iteration of for_each_child_of_node() decrements
the reference count of the previous node.
When break from a for_each_child_of_node() loop,
we need to explicitly call of_node_put() on the child node when
not need anymore.
Add missing of_node_put() to avoid refcount leak. |
| In the Linux kernel, the following vulnerability has been resolved:
net: dsa: lantiq_gswip: Fix refcount leak in gswip_gphy_fw_list
Every iteration of for_each_available_child_of_node() decrements
the reference count of the previous node.
when breaking early from a for_each_available_child_of_node() loop,
we need to explicitly call of_node_put() on the gphy_fw_np.
Add missing of_node_put() to avoid refcount leak. |
| In the Linux kernel, the following vulnerability has been resolved:
af_unix: Fix a data-race in unix_dgram_peer_wake_me().
unix_dgram_poll() calls unix_dgram_peer_wake_me() without `other`'s
lock held and check if its receive queue is full. Here we need to
use unix_recvq_full_lockless() instead of unix_recvq_full(), otherwise
KCSAN will report a data-race. |
| In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: bgmac: Fix refcount leak in bcma_mdio_mii_register
of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/cs: make commands with 0 chunks illegal behaviour.
Submitting a cs with 0 chunks, causes an oops later, found trying
to execute the wrong userspace driver.
MESA_LOADER_DRIVER_OVERRIDE=v3d glxinfo
[172536.665184] BUG: kernel NULL pointer dereference, address: 00000000000001d8
[172536.665188] #PF: supervisor read access in kernel mode
[172536.665189] #PF: error_code(0x0000) - not-present page
[172536.665191] PGD 6712a0067 P4D 6712a0067 PUD 5af9ff067 PMD 0
[172536.665195] Oops: 0000 [#1] SMP NOPTI
[172536.665197] CPU: 7 PID: 2769838 Comm: glxinfo Tainted: P O 5.10.81 #1-NixOS
[172536.665199] Hardware name: To be filled by O.E.M. To be filled by O.E.M./CROSSHAIR V FORMULA-Z, BIOS 2201 03/23/2015
[172536.665272] RIP: 0010:amdgpu_cs_ioctl+0x96/0x1ce0 [amdgpu]
[172536.665274] Code: 75 18 00 00 4c 8b b2 88 00 00 00 8b 46 08 48 89 54 24 68 49 89 f7 4c 89 5c 24 60 31 d2 4c 89 74 24 30 85 c0 0f 85 c0 01 00 00 <48> 83 ba d8 01 00 00 00 48 8b b4 24 90 00 00 00 74 16 48 8b 46 10
[172536.665276] RSP: 0018:ffffb47c0e81bbe0 EFLAGS: 00010246
[172536.665277] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[172536.665278] RDX: 0000000000000000 RSI: ffffb47c0e81be28 RDI: ffffb47c0e81bd68
[172536.665279] RBP: ffff936524080010 R08: 0000000000000000 R09: ffffb47c0e81be38
[172536.665281] R10: ffff936524080010 R11: ffff936524080000 R12: ffffb47c0e81bc40
[172536.665282] R13: ffffb47c0e81be28 R14: ffff9367bc410000 R15: ffffb47c0e81be28
[172536.665283] FS: 00007fe35e05d740(0000) GS:ffff936c1edc0000(0000) knlGS:0000000000000000
[172536.665284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[172536.665286] CR2: 00000000000001d8 CR3: 0000000532e46000 CR4: 00000000000406e0
[172536.665287] Call Trace:
[172536.665322] ? amdgpu_cs_find_mapping+0x110/0x110 [amdgpu]
[172536.665332] drm_ioctl_kernel+0xaa/0xf0 [drm]
[172536.665338] drm_ioctl+0x201/0x3b0 [drm]
[172536.665369] ? amdgpu_cs_find_mapping+0x110/0x110 [amdgpu]
[172536.665372] ? selinux_file_ioctl+0x135/0x230
[172536.665399] amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[172536.665403] __x64_sys_ioctl+0x83/0xb0
[172536.665406] do_syscall_64+0x33/0x40
[172536.665409] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2018 |
