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High 7.5
net: preserve skb_end_offset() in skb_unclone_keeptruesize()
In the Linux kernel, the following vulnerability has been resolved: net: preserve skb_end_offset() in skb_unclone_keeptruesize() syzbot found another way to trigger the infamous WARN_ON_ONCE(delta < len) in skb_try_coalesce() [1] I was able to root cause the …
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High 8.8
Bluetooth: hci_event: Ignore multiple conn complete events
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Ignore multiple conn complete events When one of the three connection complete events is received multiple times for the same handle, the device is registered multiple t…
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High 8.8
scsi: libfc: Fix use after free in fc_exch_abts_resp()
In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix use after free in fc_exch_abts_resp() fc_exch_release(ep) will decrease the ep's reference count. When the reference count reaches zero, it is freed. But ep is still used in …
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High 8.8
Bluetooth: Fix use after free in hci_send_acl
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix use after free in hci_send_acl This fixes the following trace caused by receiving HCI_EV_DISCONN_PHY_LINK_COMPLETE which does call hci_conn_del without first checking if conn->…
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High 7.8
drbd: Fix five use after free bugs in get_initial_state
In the Linux kernel, the following vulnerability has been resolved: drbd: Fix five use after free bugs in get_initial_state In get_initial_state, it calls notify_initial_state_done(skb,..) if cb->args[5]==1. If genlmsg_put() failed in notify_initial_state_don…
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High 8.1
btrfs: fix qgroup reserve overflow the qgroup limit
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix qgroup reserve overflow the qgroup limit We use extent_changeset->bytes_changed in qgroup_reserve_data() to record how many bytes we set for EXTENT_QGROUP_RESERVED state. Currently…
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High 7.8
nfc: nci: add flush_workqueue to prevent uaf
In the Linux kernel, the following vulnerability has been resolved: nfc: nci: add flush_workqueue to prevent uaf Our detector found a concurrent use-after-free bug when detaching an NCI device. The main reason for this bug is the unexpected scheduling between…
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High 7.1
mm: fix unexpected zeroed page mapping with zram swap
In the Linux kernel, the following vulnerability has been resolved: mm: fix unexpected zeroed page mapping with zram swap Two processes under CLONE_VM cloning, user process can be corrupted by seeing zeroed page unexpectedly. CPU A CPU B do_swap_page do_swap_…
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High 7.8
scsi: target: tcmu: Fix possible page UAF
In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data…
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High 7.8
jffs2: fix use-after-free in jffs2_clear_xattr_subsystem
In the Linux kernel, the following vulnerability has been resolved: jffs2: fix use-after-free in jffs2_clear_xattr_subsystem When we mount a jffs2 image, assume that the first few blocks of the image are normal and contain at least one xattr-related inode, bu…
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High 7.8
ubifs: rename_whiteout: Fix double free for whiteout_ui->data
In the Linux kernel, the following vulnerability has been resolved: ubifs: rename_whiteout: Fix double free for whiteout_ui->data 'whiteout_ui->data' will be freed twice if space budget fail for rename whiteout operation as following process: rename_whiteout …
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High 7.1
ubifs: Fix read out-of-bounds in ubifs_wbuf_write_nolock()
In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix read out-of-bounds in ubifs_wbuf_write_nolock() Function ubifs_wbuf_write_nolock() may access buf out of bounds in following process: ubifs_wbuf_write_nolock(): aligned_len = ALIGN…
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High 7.8
ubi: Fix race condition between ctrl_cdev_ioctl and ubi_cdev_ioctl
In the Linux kernel, the following vulnerability has been resolved: ubi: Fix race condition between ctrl_cdev_ioctl and ubi_cdev_ioctl Hulk Robot reported a KASAN report about use-after-free: ================================================================== …
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High 7.8
ubifs: Fix to add refcount once page is set private
In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix to add refcount once page is set private MM defined the rule [1] very clearly that once page was set with PG_private flag, we should increment the refcount in that page, also main …
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High 7.8
pfifo_tail_enqueue: Drop new packet when sch->limit == 0
In the Linux kernel, the following vulnerability has been resolved: pfifo_tail_enqueue: Drop new packet when sch->limit == 0 Expected behaviour: In case we reach scheduler's limit, pfifo_tail_enqueue() will drop a packet in scheduler's queue and decrease sche…
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High 7.8
net: sched: Disallow replacing of child qdisc from one parent to another
In the Linux kernel, the following vulnerability has been resolved: net: sched: Disallow replacing of child qdisc from one parent to another Lion Ackermann was able to create a UAF which can be abused for privilege escalation with the following script Step 1.…
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High 7.8
vfio/platform: check the bounds of read/write syscalls
In the Linux kernel, the following vulnerability has been resolved: vfio/platform: check the bounds of read/write syscalls count and offset are passed from user space and not checked, only offset is capped to 40 bits, which can be used to read/write out of bo…
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High 7.8
gtp: Destroy device along with udp socket's netns dismantle.
In the Linux kernel, the following vulnerability has been resolved: gtp: Destroy device along with udp socket's netns dismantle. gtp_newlink() links the device to a list in dev_net(dev) instead of src_net, where a udp tunnel socket is created. Even when src_n…
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High 7.8
dm thin: make get_first_thin use rcu-safe list first function
In the Linux kernel, the following vulnerability has been resolved: dm thin: make get_first_thin use rcu-safe list first function The documentation in rculist.h explains the absence of list_empty_rcu() and cautions programmers against relying on a list_empty(…
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High 7.8
netfilter: nf_tables: adapt set backend to use GC transaction API
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: adapt set backend to use GC transaction API Use the GC transaction API to replace the old and buggy gc API and the busy mark approach. No set elements are removed from a…
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High 7.8
dm array: fix releasing a faulty array block twice in dm_array_cursor_end
In the Linux kernel, the following vulnerability has been resolved: dm array: fix releasing a faulty array block twice in dm_array_cursor_end When dm_bm_read_lock() fails due to locking or checksum errors, it releases the faulty block implicitly while leaving…
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High 7.1
iio: pressure: zpa2326: fix information leak in triggered buffer
In the Linux kernel, the following vulnerability has been resolved: iio: pressure: zpa2326: fix information leak in triggered buffer The 'sample' local struct is used to push data to user space from a triggered buffer, but it has a hole between the temperatur…
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High 7.1
iio: dummy: iio_simply_dummy_buffer: fix information leak in triggered buffer
In the Linux kernel, the following vulnerability has been resolved: iio: dummy: iio_simply_dummy_buffer: fix information leak in triggered buffer The 'data' array is allocated via kmalloc() and it is used to push data to user space from a triggered buffer, bu…
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High 7.1
iio: imu: kmx61: fix information leak in triggered buffer
In the Linux kernel, the following vulnerability has been resolved: iio: imu: kmx61: fix information leak in triggered buffer The 'buffer' local array is used to push data to user space from a triggered buffer, but it does not set values for inactive channels…
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High 7.1
sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy
In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons:…
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High 7.1
sctp: sysctl: auth_enable: avoid using current->nsproxy
In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: auth_enable: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - I…
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High 7.8
RDMA/rxe: Remove the direct link to net_device
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Remove the direct link to net_device The similar patch in siw is in the link: https://git.kernel.org/rdma/rdma/c/16b87037b48889 This problem also occurred in RXE. The following anal…
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High 7.8
ila: serialize calls to nf_register_net_hooks()
In the Linux kernel, the following vulnerability has been resolved: ila: serialize calls to nf_register_net_hooks() syzbot found a race in ila_add_mapping() [1] commit 031ae72825ce ("ila: call nf_unregister_net_hooks() sooner") attempted to fix a similar issu…
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High 7.8
ALSA: seq: oss: Fix races at processing SysEx messages
In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: oss: Fix races at processing SysEx messages OSS sequencer handles the SysEx messages split in 6 bytes packets, and ALSA sequencer OSS layer tries to combine those. It stores the da…
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High 7.8
ocfs2: fix slab-use-after-free due to dangling pointer dqi_priv
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix slab-use-after-free due to dangling pointer dqi_priv When mounting ocfs2 and then remounting it as read-only, a slab-use-after-free occurs after the user uses a syscall to quota_ge…
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High 7.8
drm: adv7511: Fix use-after-free in adv7533_attach_dsi()
In the Linux kernel, the following vulnerability has been resolved: drm: adv7511: Fix use-after-free in adv7533_attach_dsi() The host_node pointer was assigned and freed in adv7533_parse_dt(), and later, adv7533_attach_dsi() uses the same. Fix this use-after-…
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High 7.8
mm: hugetlb: independent PMD page table shared count
In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: independent PMD page table shared count The folio refcount may be increased unexpectly through try_get_folio() by caller such as split_huge_pages. In huge_pmd_unshare(), we use r…
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High 7.8
jffs2: Prevent rtime decompress memory corruption
In the Linux kernel, the following vulnerability has been resolved: jffs2: Prevent rtime decompress memory corruption The rtime decompression routine does not fully check bounds during the entirety of the decompression pass and can corrupt memory outside the …
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High 7.8
s390/cpum_sf: Handle CPU hotplug remove during sampling
In the Linux kernel, the following vulnerability has been resolved: s390/cpum_sf: Handle CPU hotplug remove during sampling CPU hotplug remove handling triggers the following function call sequence: CPUHP_AP_PERF_S390_SF_ONLINE --> s390_pmu_sf_offline_cpu() .…
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High 7.8
spi: mpc52xx: Add cancel_work_sync before module remove
In the Linux kernel, the following vulnerability has been resolved: spi: mpc52xx: Add cancel_work_sync before module remove If we remove the module which will call mpc52xx_spi_remove it will free 'ms' through spi_unregister_controller. while the work ms->work…
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High 7.8
btrfs: fix use-after-free when COWing tree bock and tracing is enabled
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix use-after-free when COWing tree bock and tracing is enabled When a COWing a tree block, at btrfs_cow_block(), and we have the tracepoint trace_btrfs_cow_block() enabled and preempt…
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High 8.4
9p/xen: fix release of IRQ
In the Linux kernel, the following vulnerability has been resolved: 9p/xen: fix release of IRQ Kernel logs indicate an IRQ was double-freed. Pass correct device ID during IRQ release. [Dominique: remove confusing variable reset to 0]
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High 7.5
ipv6: Fix soft lockups in fib6_select_path under high next hop churn
In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix soft lockups in fib6_select_path under high next hop churn Soft lockups have been observed on a cluster of Linux-based edge routers located in a highly dynamic environment. Using th…
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High 7.8
f2fs: fix to do sanity check on node blkaddr in truncate_node()
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node blkaddr in truncate_node() syzbot reports a f2fs bug as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/segment.c:2534! RIP: 0010:f2fs_i…
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High 7.5
sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport
In the Linux kernel, the following vulnerability has been resolved: sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport Since transport->sock has been set to NULL during reset transport, XPRT_SOCK_UPD_TIMEOUT also needs to be cleared. Otherwise, the xs_t…