Linux: >> Linux Kernel >> 6.0.9 Security Vulnerabilities
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix resolving backrefs for inline extent followed by prealloc
If a file consists of an inline extent followed by a regular or prealloc
extent, then a legitimate attempt to resolve a logical address in the
non-inline region will result in add_all_parents reading the invalid
offset field of the inline extent. If the inline extent item is placed
in the leaf eb s.t. it is the first item, attempting to access the
offset field will not only be meaningless, it will go past the end of
the eb and cause this panic:
[17.626048] BTRFS warning (device dm-2): bad eb member end: ptr 0x3fd4 start 30834688 member offset 16377 size 8
[17.631693] general protection fault, probably for non-canonical address 0x5088000000000: 0000 [#1] SMP PTI
[17.635041] CPU: 2 PID: 1267 Comm: btrfs Not tainted 5.12.0-07246-g75175d5adc74-dirty #199
[17.637969] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[17.641995] RIP: 0010:btrfs_get_64+0xe7/0x110
[17.649890] RSP: 0018:ffffc90001f73a08 EFLAGS: 00010202
[17.651652] RAX: 0000000000000001 RBX: ffff88810c42d000 RCX: 0000000000000000
[17.653921] RDX: 0005088000000000 RSI: ffffc90001f73a0f RDI: 0000000000000001
[17.656174] RBP: 0000000000000ff9 R08: 0000000000000007 R09: c0000000fffeffff
[17.658441] R10: ffffc90001f73790 R11: ffffc90001f73788 R12: ffff888106afe918
[17.661070] R13: 0000000000003fd4 R14: 0000000000003f6f R15: cdcdcdcdcdcdcdcd
[17.663617] FS: 00007f64e7627d80(0000) GS:ffff888237c80000(0000) knlGS:0000000000000000
[17.666525] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[17.668664] CR2: 000055d4a39152e8 CR3: 000000010c596002 CR4: 0000000000770ee0
[17.671253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[17.673634] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[17.676034] PKRU: 55555554
[17.677004] Call Trace:
[17.677877] add_all_parents+0x276/0x480
[17.679325] find_parent_nodes+0xfae/0x1590
[17.680771] btrfs_find_all_leafs+0x5e/0xa0
[17.682217] iterate_extent_inodes+0xce/0x260
[17.683809] ? btrfs_inode_flags_to_xflags+0x50/0x50
[17.685597] ? iterate_inodes_from_logical+0xa1/0xd0
[17.687404] iterate_inodes_from_logical+0xa1/0xd0
[17.689121] ? btrfs_inode_flags_to_xflags+0x50/0x50
[17.691010] btrfs_ioctl_logical_to_ino+0x131/0x190
[17.692946] btrfs_ioctl+0x104a/0x2f60
[17.694384] ? selinux_file_ioctl+0x182/0x220
[17.695995] ? __x64_sys_ioctl+0x84/0xc0
[17.697394] __x64_sys_ioctl+0x84/0xc0
[17.698697] do_syscall_64+0x33/0x40
[17.700017] entry_SYSCALL_64_after_hwframe+0x44/0xae
[17.701753] RIP: 0033:0x7f64e72761b7
[17.709355] RSP: 002b:00007ffefb067f58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[17.712088] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f64e72761b7
[17.714667] RDX: 00007ffefb067fb0 RSI: 00000000c0389424 RDI: 0000000000000003
[17.717386] RBP: 00007ffefb06d188 R08: 000055d4a390d2b0 R09: 00007f64e7340a60
[17.719938] R10: 0000000000000231 R11: 0000000000000246 R12: 0000000000000001
[17.722383] R13: 0000000000000000 R14: 00000000c0389424 R15: 000055d4a38fd2a0
[17.724839] Modules linked in:
Fix the bug by detecting the inline extent item in add_all_parents and
skipping to the next extent item.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
mtd: core: Fix refcount error in del_mtd_device()
del_mtd_device() will call of_node_put() to mtd_get_of_node(mtd), which
is mtd->dev.of_node. However, memset(&mtd->dev, 0) is called before
of_node_put(). As the result, of_node_put() won't do anything in
del_mtd_device(), and causes the refcount leak.
del_mtd_device()
memset(&mtd->dev, 0, sizeof(mtd->dev) # clear mtd->dev
of_node_put()
mtd_get_of_node(mtd) # mtd->dev is cleared, can't locate of_node
# of_node_put(NULL) won't do anything
Fix the error by caching the pointer of the device_node.
OF: ERROR: memory leak, expected refcount 1 instead of 2,
of_node_get()/of_node_put() unbalanced - destroy cset entry: attach
overlay node /spi/spi-sram@0
CPU: 3 PID: 275 Comm: python3 Tainted: G N 6.1.0-rc3+ #54
0d8a1edddf51f172ff5226989a7565c6313b08e2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x67/0x83
kobject_get+0x155/0x160
of_node_get+0x1f/0x30
of_fwnode_get+0x43/0x70
fwnode_handle_get+0x54/0x80
fwnode_get_nth_parent+0xc9/0xe0
fwnode_full_name_string+0x3f/0xa0
device_node_string+0x30f/0x750
pointer+0x598/0x7a0
vsnprintf+0x62d/0x9b0
...
cfs_overlay_release+0x30/0x90
config_item_release+0xbe/0x1a0
config_item_put+0x5e/0x80
configfs_rmdir+0x3bd/0x540
vfs_rmdir+0x18c/0x320
do_rmdir+0x198/0x330
__x64_sys_rmdir+0x2c/0x40
do_syscall_64+0x37/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
[<miquel.raynal@bootlin.com>: Light reword of the commit log]
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: Fix crash on hci_create_cis_sync
When attempting to connect multiple ISO sockets without using
DEFER_SETUP may result in the following crash:
BUG: KASAN: null-ptr-deref in hci_create_cis_sync+0x18b/0x2b0
Read of size 2 at addr 0000000000000036 by task kworker/u3:1/50
CPU: 0 PID: 50 Comm: kworker/u3:1 Not tainted
6.0.0-rc7-02243-gb84a13ff4eda #4373
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
BIOS 1.16.0-1.fc36 04/01/2014
Workqueue: hci0 hci_cmd_sync_work
Call Trace:
<TASK>
dump_stack_lvl+0x19/0x27
kasan_report+0xbc/0xf0
? hci_create_cis_sync+0x18b/0x2b0
hci_create_cis_sync+0x18b/0x2b0
? get_link_mode+0xd0/0xd0
? __ww_mutex_lock_slowpath+0x10/0x10
? mutex_lock+0xe0/0xe0
? get_link_mode+0xd0/0xd0
hci_cmd_sync_work+0x111/0x190
process_one_work+0x427/0x650
worker_thread+0x87/0x750
? process_one_work+0x650/0x650
kthread+0x14e/0x180
? kthread_exit+0x50/0x50
ret_from_fork+0x22/0x30
</TASK>
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
clk: samsung: Fix memory leak in _samsung_clk_register_pll()
If clk_register() fails, @pll->rate_table may have allocated memory by
kmemdup(), so it needs to be freed, otherwise will cause memory leak
issue, this patch fixes it.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
drm/vmwgfx: Validate the box size for the snooped cursor
Invalid userspace dma surface copies could potentially overflow
the memcpy from the surface to the snooped image leading to crashes.
To fix it the dimensions of the copybox have to be validated
against the expected size of the snooped cursor.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Validate buffer length while parsing index
indx_read is called when we have some NTFS directory operations that
need more information from the index buffers. This adds a sanity check
to make sure the returned index buffer length is legit, or we may have
some out-of-bound memory accesses.
[ 560.897595] BUG: KASAN: slab-out-of-bounds in hdr_find_e.isra.0+0x10c/0x320
[ 560.898321] Read of size 2 at addr ffff888009497238 by task exp/245
[ 560.898760]
[ 560.899129] CPU: 0 PID: 245 Comm: exp Not tainted 6.0.0-rc6 #37
[ 560.899505] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 560.900170] Call Trace:
[ 560.900407] <TASK>
[ 560.900732] dump_stack_lvl+0x49/0x63
[ 560.901108] print_report.cold+0xf5/0x689
[ 560.901395] ? hdr_find_e.isra.0+0x10c/0x320
[ 560.901716] kasan_report+0xa7/0x130
[ 560.901950] ? hdr_find_e.isra.0+0x10c/0x320
[ 560.902208] __asan_load2+0x68/0x90
[ 560.902427] hdr_find_e.isra.0+0x10c/0x320
[ 560.902846] ? cmp_uints+0xe0/0xe0
[ 560.903363] ? cmp_sdh+0x90/0x90
[ 560.903883] ? ntfs_bread_run+0x190/0x190
[ 560.904196] ? rwsem_down_read_slowpath+0x750/0x750
[ 560.904969] ? ntfs_fix_post_read+0xe0/0x130
[ 560.905259] ? __kasan_check_write+0x14/0x20
[ 560.905599] ? up_read+0x1a/0x90
[ 560.905853] ? indx_read+0x22c/0x380
[ 560.906096] indx_find+0x2ef/0x470
[ 560.906352] ? indx_find_buffer+0x2d0/0x2d0
[ 560.906692] ? __kasan_kmalloc+0x88/0xb0
[ 560.906977] dir_search_u+0x196/0x2f0
[ 560.907220] ? ntfs_nls_to_utf16+0x450/0x450
[ 560.907464] ? __kasan_check_write+0x14/0x20
[ 560.907747] ? mutex_lock+0x8f/0xe0
[ 560.907970] ? __mutex_lock_slowpath+0x20/0x20
[ 560.908214] ? kmem_cache_alloc+0x143/0x4b0
[ 560.908459] ntfs_lookup+0xe0/0x100
[ 560.908788] __lookup_slow+0x116/0x220
[ 560.909050] ? lookup_fast+0x1b0/0x1b0
[ 560.909309] ? lookup_fast+0x13f/0x1b0
[ 560.909601] walk_component+0x187/0x230
[ 560.909944] link_path_walk.part.0+0x3f0/0x660
[ 560.910285] ? handle_lookup_down+0x90/0x90
[ 560.910618] ? path_init+0x642/0x6e0
[ 560.911084] ? percpu_counter_add_batch+0x6e/0xf0
[ 560.912559] ? __alloc_file+0x114/0x170
[ 560.913008] path_openat+0x19c/0x1d10
[ 560.913419] ? getname_flags+0x73/0x2b0
[ 560.913815] ? kasan_save_stack+0x3a/0x50
[ 560.914125] ? kasan_save_stack+0x26/0x50
[ 560.914542] ? __kasan_slab_alloc+0x6d/0x90
[ 560.914924] ? kmem_cache_alloc+0x143/0x4b0
[ 560.915339] ? getname_flags+0x73/0x2b0
[ 560.915647] ? getname+0x12/0x20
[ 560.916114] ? __x64_sys_open+0x4c/0x60
[ 560.916460] ? path_lookupat.isra.0+0x230/0x230
[ 560.916867] ? __isolate_free_page+0x2e0/0x2e0
[ 560.917194] do_filp_open+0x15c/0x1f0
[ 560.917448] ? may_open_dev+0x60/0x60
[ 560.917696] ? expand_files+0xa4/0x3a0
[ 560.917923] ? __kasan_check_write+0x14/0x20
[ 560.918185] ? _raw_spin_lock+0x88/0xdb
[ 560.918409] ? _raw_spin_lock_irqsave+0x100/0x100
[ 560.918783] ? _find_next_bit+0x4a/0x130
[ 560.919026] ? _raw_spin_unlock+0x19/0x40
[ 560.919276] ? alloc_fd+0x14b/0x2d0
[ 560.919635] do_sys_openat2+0x32a/0x4b0
[ 560.920035] ? file_open_root+0x230/0x230
[ 560.920336] ? __rcu_read_unlock+0x5b/0x280
[ 560.920813] do_sys_open+0x99/0xf0
[ 560.921208] ? filp_open+0x60/0x60
[ 560.921482] ? exit_to_user_mode_prepare+0x49/0x180
[ 560.921867] __x64_sys_open+0x4c/0x60
[ 560.922128] do_syscall_64+0x3b/0x90
[ 560.922369] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 560.923030] RIP: 0033:0x7f7dff2e4469
[ 560.923681] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 088
[ 560.924451] RSP: 002b:00007ffd41a210b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000002
[ 560.925168] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7dff2e4469
[ 560.925655] RDX: 0000000000000000 RSI: 0000000000000002 RDI:
---truncated---
CVSS Score
7.1
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
drm/rockchip: lvds: fix PM usage counter unbalance in poweron
pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
We fix it by replacing it with the newest pm_runtime_resume_and_get
to keep usage counter balanced.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
blk-mq: fix possible memleak when register 'hctx' failed
There's issue as follows when do fault injection test:
unreferenced object 0xffff888132a9f400 (size 512):
comm "insmod", pid 308021, jiffies 4324277909 (age 509.733s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 08 f4 a9 32 81 88 ff ff ...........2....
08 f4 a9 32 81 88 ff ff 00 00 00 00 00 00 00 00 ...2............
backtrace:
[<00000000e8952bb4>] kmalloc_node_trace+0x22/0xa0
[<00000000f9980e0f>] blk_mq_alloc_and_init_hctx+0x3f1/0x7e0
[<000000002e719efa>] blk_mq_realloc_hw_ctxs+0x1e6/0x230
[<000000004f1fda40>] blk_mq_init_allocated_queue+0x27e/0x910
[<00000000287123ec>] __blk_mq_alloc_disk+0x67/0xf0
[<00000000a2a34657>] 0xffffffffa2ad310f
[<00000000b173f718>] 0xffffffffa2af824a
[<0000000095a1dabb>] do_one_initcall+0x87/0x2a0
[<00000000f32fdf93>] do_init_module+0xdf/0x320
[<00000000cbe8541e>] load_module+0x3006/0x3390
[<0000000069ed1bdb>] __do_sys_finit_module+0x113/0x1b0
[<00000000a1a29ae8>] do_syscall_64+0x35/0x80
[<000000009cd878b0>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
Fault injection context as follows:
kobject_add
blk_mq_register_hctx
blk_mq_sysfs_register
blk_register_queue
device_add_disk
null_add_dev.part.0 [null_blk]
As 'blk_mq_register_hctx' may already add some objects when failed halfway,
but there isn't do fallback, caller don't know which objects add failed.
To solve above issue just do fallback when add objects failed halfway in
'blk_mq_register_hctx'.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
ext4: don't set up encryption key during jbd2 transaction
Commit a80f7fcf1867 ("ext4: fixup ext4_fc_track_* functions' signature")
extended the scope of the transaction in ext4_unlink() too far, making
it include the call to ext4_find_entry(). However, ext4_find_entry()
can deadlock when called from within a transaction because it may need
to set up the directory's encryption key.
Fix this by restoring the transaction to its original scope.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01
In the Linux kernel, the following vulnerability has been resolved:
ASoC: mediatek: mt8173: Enable IRQ when pdata is ready
If the device does not come straight from reset, we might receive an IRQ
before we are ready to handle it.
[ 2.334737] Unable to handle kernel read from unreadable memory at virtual address 00000000000001e4
[ 2.522601] Call trace:
[ 2.525040] regmap_read+0x1c/0x80
[ 2.528434] mt8173_afe_irq_handler+0x40/0xf0
...
[ 2.598921] start_kernel+0x338/0x42c
CVSS Score
5.5
EPSS Score
0.0
Published
2025-10-01