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High 7.8
block, bfq: fix possible UAF for bfqq->bic with merge chain
In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix possible UAF for bfqq->bic with merge chain 1) initial state, three tasks: Process 1 Process 2 Process 3 (BIC1) (BIC2) (BIC3) | Λ | Λ | Λ | | | | | | V | V | V | bfqq1 bfqq2 b…
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High 7.8
bpf, lsm: Add check for BPF LSM return value
In the Linux kernel, the following vulnerability has been resolved: bpf, lsm: Add check for BPF LSM return value A bpf prog returning a positive number attached to file_alloc_security hook makes kernel panic. This happens because file system can not filter ou…
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High 7.8
ext4: avoid OOB when system.data xattr changes underneath the filesystem
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid OOB when system.data xattr changes underneath the filesystem When looking up for an entry in an inlined directory, if e_value_offs is changed underneath the filesystem by some cha…
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High 7.8
drivers: media: dvb-frontends/rtl2832: fix an out-of-bounds write error
In the Linux kernel, the following vulnerability has been resolved: drivers: media: dvb-frontends/rtl2832: fix an out-of-bounds write error Ensure index in rtl2832_pid_filter does not exceed 31 to prevent out-of-bounds access. dev->filters is a 32-bit value, …
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High 7.8
drivers: media: dvb-frontends/rtl2830: fix an out-of-bounds write error
In the Linux kernel, the following vulnerability has been resolved: drivers: media: dvb-frontends/rtl2830: fix an out-of-bounds write error Ensure index in rtl2830_pid_filter does not exceed 31 to prevent out-of-bounds access. dev->filters is a 32-bit value, …
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High 7.5
RDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency
In the Linux kernel, the following vulnerability has been resolved: RDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency In the commit aee2424246f9 ("RDMA/iwcm: Fix a use-after-free related to destroying CM IDs"), the function flush_workqueue …
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High 7.8
f2fs: get rid of online repaire on corrupted directory
In the Linux kernel, the following vulnerability has been resolved: f2fs: get rid of online repaire on corrupted directory syzbot reports a f2fs bug as below: kernel BUG at fs/f2fs/inode.c:896! RIP: 0010:f2fs_evict_inode+0x1598/0x15c0 fs/f2fs/inode.c:896 Call…
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High 7.8
vfs: fix race between evice_inodes() and find_inode()&iput()
In the Linux kernel, the following vulnerability has been resolved: vfs: fix race between evice_inodes() and find_inode()&iput() Hi, all Recently I noticed a bug[1] in btrfs, after digged it into and I believe it'a race in vfs. Let's assume there's a inode (i…
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High 7.8
mm: avoid leaving partial pfn mappings around in error case
In the Linux kernel, the following vulnerability has been resolved: mm: avoid leaving partial pfn mappings around in error case As Jann points out, PFN mappings are special, because unlike normal memory mappings, there is no lifetime information associated wi…
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High 7.8
ocfs2: add bounds checking to ocfs2_xattr_find_entry()
In the Linux kernel, the following vulnerability has been resolved: ocfs2: add bounds checking to ocfs2_xattr_find_entry() Add a paranoia check to make sure it doesn't stray beyond valid memory region containing ocfs2 xattr entries when scanning for a match. …
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High 7.3
nilfs2: fix state management in error path of log writing function
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix state management in error path of log writing function After commit a694291a6211 ("nilfs2: separate wait function from nilfs_segctor_write") was applied, the log writing function …
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High 7.8
lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth b…
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High 7.3
PCI: keystone: Add workaround for Errata #i2037 (AM65x SR 1.0)
In the Linux kernel, the following vulnerability has been resolved: PCI: keystone: Add workaround for Errata #i2037 (AM65x SR 1.0) Errata #i2037 in AM65x/DRA80xM Processors Silicon Revision 1.0 (SPRZ452D_July 2018_Revised December 2019 [1]) mentions when an i…
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High 7.5
crypto: stm32/cryp - call finalize with bh disabled
In the Linux kernel, the following vulnerability has been resolved: crypto: stm32/cryp - call finalize with bh disabled The finalize operation in interrupt mode produce a produces a spinlock recursion warning. The reason is the fact that BH must be disabled d…
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High 7.8
platform/x86: panasonic-laptop: Fix SINF array out of bounds accesses
In the Linux kernel, the following vulnerability has been resolved: platform/x86: panasonic-laptop: Fix SINF array out of bounds accesses The panasonic laptop code in various places uses the SINF array with index values of 0 - SINF_CUR_BRIGHT(0x0d) without ch…
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High 8.1
mptcp: pm: Fix uaf in __timer_delete_sync
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: Fix uaf in __timer_delete_sync There are two paths to access mptcp_pm_del_add_timer, result in a race condition: CPU1 CPU2 ==== ==== net_rx_action napi_poll netlink_sendmsg __napi_…
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High 7.5
netfilter: nft_socket: fix sk refcount leaks
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_socket: fix sk refcount leaks We must put 'sk' reference before returning.
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High 7.8
dma-buf: heaps: Fix off-by-one in CMA heap fault handler
In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VM_DONTEXPAND was added in commit 1c1914d6e8c6 ("dma-buf: heaps: Don't track CMA dma-buf pages under RssFile") it was possible t…
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High 7.1
um: line: always fill *error_out in setup_one_line()
In the Linux kernel, the following vulnerability has been resolved: um: line: always fill *error_out in setup_one_line() The pointer isn't initialized by callers, but I have encountered cases where it's still printed; initialize it in all possible cases in se…
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High 7.8
ethtool: fail closed if we can't get max channel used in indirection tables
In the Linux kernel, the following vulnerability has been resolved: ethtool: fail closed if we can't get max channel used in indirection tables Commit 0d1b7d6c9274 ("bnxt: fix crashes when reducing ring count with active RSS contexts") proves that allowing in…
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High 7.8
KVM: x86: Acquire kvm->srcu when handling KVM_SET_VCPU_EVENTS
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire kvm->srcu when handling KVM_SET_VCPU_EVENTS Grab kvm->srcu when processing KVM_SET_VCPU_EVENTS, as KVM will forcibly leave nested VMX/SVM if SMM mode is being toggled, and l…
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High 7.1
sched: sch_cake: fix bulk flow accounting logic for host fairness
In the Linux kernel, the following vulnerability has been resolved: sched: sch_cake: fix bulk flow accounting logic for host fairness In sch_cake, we keep track of the count of active bulk flows per host, when running in dst/src host fairness mode, which is u…
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High 7.8
drm/amd/display: Check gpio_id before used as array index
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check gpio_id before used as array index [WHY & HOW] GPIO_ID_UNKNOWN (-1) is not a valid value for array index and therefore should be checked in advance. This fixes 5 OVERRU…
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High 7.4
drm/amd/display: Stop amdgpu_dm initialize when stream nums greater than 6
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Stop amdgpu_dm initialize when stream nums greater than 6 [Why] Coverity reports OVERRUN warning. Should abort amdgpu_dm initialize. [How] Return failure to amdgpu_dm_init.
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High 7.8
drm/amd/display: Stop amdgpu_dm initialize when link nums greater than max_links
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Stop amdgpu_dm initialize when link nums greater than max_links [Why] Coverity report OVERRUN warning. There are only max_links elements within dc->links. link count could up…
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High 7.1
drm/amd/display: Check num_valid_sets before accessing reader_wm_sets[]
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check num_valid_sets before accessing reader_wm_sets[] [WHY & HOW] num_valid_sets needs to be checked to avoid a negative index when accessing reader_wm_sets[num_valid_sets -…
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High 7.8
drm/amd/display: Skip inactive planes within ModeSupportAndSystemConfiguration
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Skip inactive planes within ModeSupportAndSystemConfiguration [Why] Coverity reports Memory - illegal accesses. [How] Skip inactive planes.
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High 7.8
drm/amd/display: Check link_index before accessing dc->links[]
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check link_index before accessing dc->links[] [WHY & HOW] dc->links[] has max size of MAX_LINKS and NULL is return when trying to access with out-of-bound index. This fixes 3…
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High 7.3
drm/amd/display: Fix index may exceed array range within fpu_update_bw_bounding_box
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix index may exceed array range within fpu_update_bw_bounding_box [Why] Coverity reports OVERRUN warning. soc.num_states could be 40. But array range of bw_params->clk_table…
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High 7.8
media: vivid: fix compose size exceed boundary
In the Linux kernel, the following vulnerability has been resolved: media: vivid: fix compose size exceed boundary syzkaller found a bug: BUG: unable to handle page fault for address: ffffc9000a3b1000 #PF: supervisor write access in kernel mode #PF: error_cod…
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High 7.8
sch/netem: fix use after free in netem_dequeue
In the Linux kernel, the following vulnerability has been resolved: sch/netem: fix use after free in netem_dequeue If netem_dequeue() enqueues packet to inner qdisc and that qdisc returns __NET_XMIT_STOLEN. The packet is dropped but qdisc_tree_reduce_backlog(…
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High 7.8
ASoC: dapm: Fix UAF for snd_soc_pcm_runtime object
In the Linux kernel, the following vulnerability has been resolved: ASoC: dapm: Fix UAF for snd_soc_pcm_runtime object When using kernel with the following extra config, - CONFIG_KASAN=y - CONFIG_KASAN_GENERIC=y - CONFIG_KASAN_INLINE=y - CONFIG_KASAN_VMALLOC=…
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High 7.8
userfaultfd: fix checks for huge PMDs
In the Linux kernel, the following vulnerability has been resolved: userfaultfd: fix checks for huge PMDs Patch series "userfaultfd: fix races around pmd_trans_huge() check", v2. The pmd_trans_huge() code in mfill_atomic() is wrong in three different ways dep…
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High 7.8
nilfs2: fix missing cleanup on rollforward recovery error
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix missing cleanup on rollforward recovery error In an error injection test of a routine for mount-time recovery, KASAN found a use-after-free bug. It turned out that if data recover…
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High 7.8
nilfs2: protect references to superblock parameters exposed in sysfs
In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect references to superblock parameters exposed in sysfs The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regul…
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High 7.8
udf: Avoid excessive partition lengths
In the Linux kernel, the following vulnerability has been resolved: udf: Avoid excessive partition lengths Avoid mounting filesystems where the partition would overflow the 32-bits used for block number. Also refuse to mount filesystems where the partition le…
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High 7.8
can: bcm: Remove proc entry when dev is unregistered.
In the Linux kernel, the following vulnerability has been resolved: can: bcm: Remove proc entry when dev is unregistered. syzkaller reported a warning in bcm_connect() below. [0] The repro calls connect() to vxcan1, removes vxcan1, and calls connect() with if…
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High 7.8
ice: protect XDP configuration with a mutex
In the Linux kernel, the following vulnerability has been resolved: ice: protect XDP configuration with a mutex The main threat to data consistency in ice_xdp() is a possible asynchronous PF reset. It can be triggered by a user or by TX timeout handler. XDP s…
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High 7.5
fou: Fix null-ptr-deref in GRO.
In the Linux kernel, the following vulnerability has been resolved: fou: Fix null-ptr-deref in GRO. We observed a null-ptr-deref in fou_gro_receive() while shutting down a host. [0] The NULL pointer is sk->sk_user_data, and the offset 8 is of protocol in stru…
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High 8.8
wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id() mwifiex_get_priv_by_id() returns the priv pointer corresponding to the bss_num and bss_type, but without checking if the p…