Без оценкиEPSS 0,18%Нет опубликованного исправления
bpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn
In the Linux kernel, the following vulnerability has been resolved:
bpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn
The BPF_MOV64_PERCPU_REG insn requires JIT to emit native code to for
'dst_reg = src_reg + <percpu_base_off>'.
However, the interpreter ignores the 'off' at its ALU64_MOV_X label.
The 'off' indicates the insn is BPF_MOV64_PERCPU_REG insn. Then, when
the interpreter loads memory from the register, it will hit a page
fault.
[ 2.545572] BUG: unable to handle page fault for address: ffffffffacaaf034
[ 2.546485] #PF: supervisor read access in kernel mode
[ 2.547167] #PF: error_code(0x0000) - not-present page
Средний · CVSS 5.7EPSS 0,2%Нет опубликованного исправления
ext4: fix circular lock dependency in ext4_ext_migrate
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix circular lock dependency in ext4_ext_migrate
Move iput(tmp_inode) after ext4_writepages_up_write() to avoid a
circular lock dependency between s_writepages_rwsem and sb_internal
(freeze protection).
The deadlock scenario:
CPU0 (EXT4_IOC_MIGRATE) CPU1 (orphan cleanup during mount)
---- ----
ext4_ext_migrate()
ext4_writepages_down_write()
s_writepages_rwsem (write)
ext4_evict_inode()
sb_start_intwrite() [sb_internal]
Без оценкиEPSS 0,2%Нет опубликованного исправления
ext4: skip extra isize expansion during mount to prevent deadlock
In the Linux kernel, the following vulnerability has been resolved:
ext4: skip extra isize expansion during mount to prevent deadlock
ext4_try_to_expand_extra_isize() is called from __ext4_mark_inode_dirty()
while holding an active jbd2 handle. During mount (!SB_ACTIVE), the
expand path may move xattrs to external blocks and release ea_inodes via
iput(). When !SB_ACTIVE, iput() calls write_inode_now() which acquires
s_writepages_rwsem, creating a circular lock dependency:
s_writepages_rwsem --> jbd2_handle --> xattr_sem --> s_writepages_rwsem
This can be triggered via:
ext4_process_orphan() -> ext4_truncate() -> ext4_mark_inode_dir
Без оценкиEPSS 0,19%Нет опубликованного исправления
RDMA/core: Fix potential use after free in uverbs_free_dmah()
In the Linux kernel, the following vulnerability has been resolved:
RDMA/core: Fix potential use after free in uverbs_free_dmah()
When accessing a dmah via the netlink path the only synchronization
mechanism for the said dmah is rdma_restrack_get().
Currently, rdma_restrack_del() is invoked at the end of
uverbs_free_dmah(), which is too late, since by that point
vendor-specific resources associated with the dmah might already be
freed. This can leave a short window where the dmah remains accessible
through restrack, leading to a potential use-after-free.
Fix this by moving the rdma_restrack_begin_del() call to the start of
uverbs_free_dmah
Без оценкиEPSS 0,18%Нет опубликованного исправления
arm64: RSI: fix field-spanning write warning in attestation token init
In the Linux kernel, the following vulnerability has been resolved:
arm64: RSI: fix field-spanning write warning in attestation token init
The challenge is passed in registers a1 through a8. However, copying to
®s.a1 makes FORTIFY treat the destination as the single a1 field,
resulting in a field-spanning write warning. [1]
Overlay the SMCCC register structure with an RSI-specific argument
layout and copy the challenge into an explicit 64-byte array. This keeps
the existing a1-a8 argument encoding while giving the copy a correctly
sized destination object.
[1]
memcpy: detected field-spanning write (size 64) of single field "®s.a1" a
Высокий · CVSS 7.7EPSS 0,14%Нет опубликованного исправления
PCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node
In the Linux kernel, the following vulnerability has been resolved:
PCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node
DSP3 has an integrated Ethernet MAC Endpoint which has its own set of
config registers for configuring settings such as ASPM. The Endpoint device
has two physical functions and those two functions share the same settings.
Parse the Endpoint node under DSP3 instead of parsing both functions. The
existing parsing logic also has one OOB issue as parsing both functions
will result in accessing past the tc9563_pwrctrl->cfg array.
Без оценкиEPSS 0,2%Нет опубликованного исправления
RDMA/efa: Fix PBL chunk length computation
In the Linux kernel, the following vulnerability has been resolved:
RDMA/efa: Fix PBL chunk length computation
On register MR, when creating the PBL, if it's an indirect PBL we create
a chunk list to hold the PBL pages pointers. Each chunk is 4KB in size
and can hold 510 addresses (EFA_PTRS_PER_CHUNK) and has a 12-byte
control buffer at the end of it holding the next chunk's pointer and its
length.
If the PBL number of pages is a multiple of EFA_PTRS_PER_CHUNK, the
calculated last chunk length is wrongly computed as 0, even though that
chunk is fully populated with 510 real page pointers. This wrong length
is used both to DMA map the chunk
Высокий · CVSS 7.8EPSS 0,15%Нет опубликованного исправления
md/raid5-ppl: fix use-after-free in ppl_do_flush()
In the Linux kernel, the following vulnerability has been resolved:
md/raid5-ppl: fix use-after-free in ppl_do_flush()
The loop in ppl_do_flush() continues iterating after calling
ppl_io_unit_finished(), touching io->pending_flushes and leading to a
use-after-free.
Add a break statement to stop the loop once io is freed.
Без оценкиEPSS 0,2%Нет опубликованного исправления
locking/lockdep: Fix NULL pointer dereference in __lock_set_class()
In the Linux kernel, the following vulnerability has been resolved:
locking/lockdep: Fix NULL pointer dereference in __lock_set_class()
register_lock_class() can return NULL when the lock class pool is
exhausted, graph_lock() fails, or key validation fails. However,
__lock_set_class() uses the return value directly in pointer arithmetic
without a NULL check:
class = register_lock_class(lock, subclass, 0);
hlock->class_idx = class - lock_classes;
If class is NULL, this computes a wild offset that corrupts
hlock->class_idx. The subsequent reacquire_held_locks() call will
invoke hlock_class() with this corrupted index, leading to a NULL
Высокий · CVSS 7.4EPSS 0,14%Нет опубликованного исправления
powerpc/xive: propagate IPI init errors to prevent use-after-free
In the Linux kernel, the following vulnerability has been resolved:
powerpc/xive: propagate IPI init errors to prevent use-after-free
When xive_init_ipis() fails (e.g. irq_domain_alloc_irqs() fails),
the error path frees the global xive_ipis array. However,
xive_smp_probe() previously ignored this failure and proceeded to
call xive_setup_cpu_ipi(), which dereferences the already-freed
xive_ipis pointer -- a use-after-free.
Now that xive_smp_probe() returns int (previous patch), propagate
the error from xive_init_ipis() and xive_setup_cpu_ipi() through
xive_smp_probe(). Check the return value in both pnv_smp_probe()
and pSeries_smp_probe(
Без оценкиEPSS 0,19%Нет опубликованного исправления
powerpc/irq: Fix missing r2 clobber in PCREL inline assembly
In the Linux kernel, the following vulnerability has been resolved:
powerpc/irq: Fix missing r2 clobber in PCREL inline assembly
In CONFIG_PPC_KERNEL_PCREL mode, r2 is no longer reserved for the TOC
pointer and is available as a caller-saved register [0].
Both call_do_irq() and call_do_softirq() use inline assembly to call
functions with stack switching, but fail to list r2 in their clobber
lists. This causes the compiler to assume r2 is preserved across these
calls, leading to register corruption when the called functions
(__do_irq and __do_softirq) clobber r2.
As a result of this kernel crash during interrupt handling is seen and
the ke
Без оценкиEPSS 0,19%Нет опубликованного исправления
ocfs2: do not use make_bad_inode() in ocfs2_read_inode_block_full()
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: do not use make_bad_inode() in ocfs2_read_inode_block_full()
This reverts commit 58b6fcd2ab34 ("ocfs2: mark inode bad upon validation
failure during read").
Since 'make_bad_inode()' resets inode type to S_IFREG, doing this for
directory inode during active VFS lookup is likely to confuse the latter,
including VFS_BUG_ON_INODE() triggered in this case.
Без оценкиEPSS 0,22%Нет опубликованного исправления
arm64: hibernate: mask DAIF before restoring hibernated kernel
In the Linux kernel, the following vulnerability has been resolved:
arm64: hibernate: mask DAIF before restoring hibernated kernel
The arm64 hibernate code manages the exception masking in an unsound
way, leading to potential crashes and/or warnings during resume.
When a hibernation image is saved in `swsusp_arch_suspend()`, all DAIF
exceptions are masked (by virtue of `local_daif_save()`), and the
suspended image is saved assuming that all DAIF exceptions will remain
masked when the image is restored.
When a hibernation image is resumed by `swsusp_arch_resume()`, only
interrupts are masked (by virtue of `local_irq_disable()` in
`resume_t
Без оценкиEPSS 0,19%Нет опубликованного исправления
sched/isolation: Defer freeing of cpumask memblock memory to initcall
In the Linux kernel, the following vulnerability has been resolved:
sched/isolation: Defer freeing of cpumask memblock memory to initcall
When testing a linux-next kernel with commit 59bd1d914bb5 ("memblock:
warn when freeing reserved memory before memory map is initialized"),
the following warning was hit when there was a "nohz_full" kernel boot
parameter.
Cannot free reserved memory because of deferred initialization of the memory map
WARNING: mm/memblock.c:904 at __free_reserved_area+0xde/0xf0, CPU#0: swapper/0/0
:
Call Trace:
<TASK>
memblock_phys_free+0xcb/0x100
housekeeping_init+0x14c/0x170
start_kernel+0x207/0x4
Без оценкиEPSS 0,22%Нет опубликованного исправления
ocfs2: fix circular locking dependency in ocfs2_init_acl()
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix circular locking dependency in ocfs2_init_acl()
A lockdep warning indicates a circular locking dependency between
`&oi->ip_xattr_sem` and `&journal->j_trans_barrier`:
WARNING: possible circular locking dependency detected
is trying to acquire lock:
(&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_init_acl+0x2fd/0x7e0
fs/ocfs2/acl.c:367
but task is already holding lock:
(&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3ab/0x700
fs/ocfs2/journal.c:369
The deadlock involves two code paths: Path 1 (setxattr) where
`ocfs2_xattr_set()` acquires `ip_xat
In the Linux kernel, the following vulnerability has been resolved:
ACPI: bus: Introduce acpi_bus_get_primary_device()
The function used for obtaining the first "physical" device for which
the given ACPI one is the ACPI companion, acpi_get_first_physical_node(),
may return a stale device pointer (mostly in theory) because
acpi_unbind_one() may run as a whole after dropping the ACPI device's
physical_node_lock in acpi_get_first_physical_node() and before it
returns. The last reference to the "physical" device may be dropped
then before the pointer to it is returned to the caller.
If that happens and the acpi_get_first_physical_node() calle
Высокий · CVSS 7.8EPSS 0,16%Нет опубликованного исправления
vxlan: mdb: Fix use-after-free in vxlan_mdb_flush()
In the Linux kernel, the following vulnerability has been resolved:
vxlan: mdb: Fix use-after-free in vxlan_mdb_flush()
vxlan_mdb_flush() iterates over the MDB entries using
hlist_for_each_entry_safe(), which only tolerates the removal of the
current entry. Contrary to the comment above the loop, the removal of an
entry can trigger the removal of another entry.
Flushing the remotes of a (*, G) entry also removes the (S, G) entries
that were created for its source list, once they are left without
remotes:
vxlan_mdb_remotes_flush()
-> vxlan_mdb_remote_del()
-> vxlan_mdb_remote_srcs_del()
-> vxlan_mdb_remote_src_del()
-> vx
Без оценкиEPSS 0,2%Нет опубликованного исправления
spi: amlogic-spisg: Make sure clk_init_data is fully initialized
In the Linux kernel, the following vulnerability has been resolved:
spi: amlogic-spisg: Make sure clk_init_data is fully initialized
The clk_init_data structure contains several mutually-exclusive members
for different methods to specify the possible parents of a clock,
prompting drivers to initialize only the members they need. However,
not initializing all members may cause subtle issues, which are only
exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is
enabled.
aml_spisg_clk_init() fills in init.parent_data, and assumes that
init.parent_names is NULL. However, the latter in uninitialized, and
thus may cause a cras
Без оценкиEPSS 0,2%Нет опубликованного исправления
drm/xe: don't WARN on kernel job timeout when device already wedged
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: don't WARN on kernel job timeout when device already wedged
igt@xe_wedged@wedged-at-any-timeout wedges the device in mode 2
(UPON_ANY_HANG_NO_RESET) and then rebinds the driver. During unbind,
a GSC proxy kernel submission can still time out; with the device wedged
and the GuC CT stopped it can never complete, so its kernel job times out.
Tile0: GT1: Kernel-submitted job timed out
WARNING: drivers/gpu/drm/xe/xe_guc_submit.c:...
at guc_exec_queue_timedout_job()
Workqueue: gt-ordered-wq drm_sched_job_timedout
Killed queues skip guc_submit_hint_wedged(), le
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: mgmt: fix 'hdev->discovery.uuids' NULL dereference
'uuid_count' member of struct 'discovery_state' is assigned and read
without any locks, so there is a chance of situation when
uuid_count != 0, but uuids is NULL and there will be NULL pointer
dereference.
Possible race:
'hci_update_passive_scan_sync'
'hci_discovery_filter_clear'
hdev->discovery.uuid_count = 0;
<----------------------preempted----------------------------->
'start_service_discovery'
// Set uuid_count to value != 0