CVE-2023-52931

In the Linux kernel, the following vulnerability has been resolved: drm/i915: Avoid potential vm use-after-free Adding the vm to the vm_xa table makes it visible to userspace, which could try to race with us to close the vm. So we need to take our extra reference before putting it in the table. (cherry picked from commit 99343c46d4e2b34c285d3d5f68ff04274c2f9fb4)

In the Linux kernel, the following vulnerability has been resolved: drm/i915: Avoid potential vm use-after-free Adding the vm to the vm_xa table makes it visible to userspace, which could try to race with us to close the vm. So we need to take our extra reference before putting it in the table. (cherry picked from commit 99343c46d4e2b34c285d3d5f68ff04274c2f9fb4)

• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• unshare: fix unshare_fs() handling {CVE-2026-43472}
• net/sched: sch_hfsc: fix divide-by-zero in rtsc_min() {CVE-2026-31423}
• net/sched: cls_flow: fix NULL pointer dereference on shared blocks {CVE-2026-31422}
• net/sched: cls_fw: fix NULL pointer dereference on shared blocks {CVE-2026-31421}
• dm: fix queue start/stop imbalance under suspend/load/resume races {CVE-2025-40134}
• ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() {CVE-2024-26773}
• ext4: fix i_data_sem unlock order in ext4_ind_migrate() {CVE-2024-50006}
• xen: Fix the issue of resource not being properly released in xenbus_dev_probe() {CVE-2024-53198}
• HID: pidff: Fix null pointer dereference in pidff_find_fields {CVE-2025-37862}
• crypto: af_alg - Set merge to zero early in af_alg_sendmsg {CVE-2025-39931}
• x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper {CVE-2025-39681}
• can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak {CVE-2026-23061}
• bonding: restore IFF_MASTER/SLAVE flags on bond enslave ether type change {CVE-2023-53103}
• NFS: Fix a potential data corruption {CVE-2023-53711}
• NFS: Fix a use after free in nfs_direct_join_group() {CVE-2023-53711}
• hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field {CVE-2021-47386}
• scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload {CVE-2024-36919}
• x86/mm: Ensure input to pfn_to_kaddr() is treated as a 64-bit type {CVE-2023-52659}
• Input: uinput - reject requests with unreasonable number of slots {CVE-2024-46745}
• afs: Fix the maximum cell name length {CVE-2025-21646}
• drm/i915: Avoid potential vm use-after-free {CVE-2023-52931}
• interconnect: fix mem leak when freeing nodes {CVE-2023-53096}
• drm/vkms: Fix memory leak in vkms_init() {CVE-2022-50269}
• USB: dwc3: fix memory leak with using debugfs_lookup() {CVE-2023-53415}
• mm/uffd: fix pte marker when fork() without fork event {CVE-2022-49744}
• scsi: qla2xxx: Fix memory leak in qla2x00_probe_one() {CVE-2023-53696}
• ipmi_si: fix a memleak in try_smi_init() {CVE-2023-53611}
• KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() {CVE-2024-58083}
• scsi: lpfc: Release hbalock before calling lpfc_worker_wake_up() {CVE-2024-36924}
• firmware: cs_dsp: Validate payload length before processing block {CVE-2024-42237}
• hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field {CVE-2021-47385}
• ftrace: Avoid potential division by zero in function_stat_show() {CVE-2025-21898}
• IB/core: Implement a limit on UMAD receive List {CVE-2024-42145}
• vfio/pci: Disable auto-enable of exclusive INTx IRQ {CVE-2024-27437}
• netfilter: nf_tables: reject duplicate device on updates {CVE-2025-38678}
• PCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type {CVE-2025-23161}
• net: nexthop: Initialize all fields in dumped nexthops {CVE-2024-42283}
• tracing: Make sure trace_printk() can output as soon as it can be used {CVE-2023-53007}
• net: tls: explicitly disallow disconnect {CVE-2025-37756}
• KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel {CVE-2025-21779}
• ext4: turn quotas off if mount failed after enabling quotas {CVE-2023-54153}
• NFC: digital: Bounds check NFC-A cascade depth in SDD response handler {CVE-2026-31622}
• block: fix overflow in blk_ioctl_discard() {CVE-2024-36917}
• usb: xhci: Check endpoint is valid before dereferencing it {CVE-2023-52901}
• iio: core: fix memleak in iio_device_register_sysfs {CVE-2023-52643}
• platform/x86/amd/pmc: Detect when STB is not available {CVE-2024-53072}
• mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath() {CVE-2023-52939}
• dm thin: make get_first_thin use rcu-safe list first function {CVE-2025-21664}
• bus: mhi: host: pci_generic: Use pci_try_reset_function() to avoid deadlock {CVE-2025-21951}
• bonding: provide a net pointer to…

The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2022-48933: netfilter: nf_tables: fix memory leak during stateful obj update (bsc#1229621).
• CVE-2022-49110: netfilter: conntrack: revisit gc autotuning (bsc#1237981).
• CVE-2022-49139: Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt (bsc#1238032).
• CVE-2022-49767: 9p/trans_fd: always use O_NONBLOCK read/write (bsc#1242493).
• CVE-2024-46763: fou: Fix null-ptr-deref in GRO (bsc#1230764).
• CVE-2024-50038: netfilter: xtables: avoid NFPROTO_UNSPEC where needed (bsc#1231910).
• CVE-2025-21726: padata: avoid UAF for reorder_work (bsc#1238865).
• CVE-2025-21785: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array (bsc#1238747).
• CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1238512).
• CVE-2025-21812: ax25: rcu protect dev->ax25_ptr (bsc#1238471).
• CVE-2025-21839: KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop (bsc#1239061).
• CVE-2025-22004: net: atm: fix use after free in lec_send() (bsc#1240835).
• CVE-2025-22020: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (bsc#1241280).
• CVE-2025-22045: x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs (bsc#1241433).
• CVE-2025-22055: net: fix geneve_opt length integer overflow (bsc#1241371).
• CVE-2025-22097: drm/vkms: Fix use after free and double free on init error (bsc#1241541).
• CVE-2025-2312: CIFS: New mount option for cifs.upcall namespace resolution (bsc#1239684).
• CVE-2025-23138: watch_queue: fix pipe accounting mismatch (bsc#1241648).
• CVE-2025-39735: jfs: fix slab-out-of-bounds read in ea_get() (bsc#1241625).

The following non-security bugs were fixed:

• cpufreq: ACPI: Mark boost policy as enabled when setting boost (bsc#1236777).
• cpufreq: Allow drivers to advertise boost enabled (bsc#1236777).
• cpufreq: Fix per-policy boost behavior on SoCs using cpufreq_boost_set_sw() (bsc#1236777).
• cpufreq: Support per-policy performance boost (bsc#1236777).
• x86/bhi: Do not set BHI_DIS_S in 32-bit mode (bsc#1242778).
• x86/bpf: Add IBHF call at end of classic BPF (bsc#1242778).
• x86/bpf: Call branch history clearing sequence on exit (bsc#1242778).

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2022-48933: netfilter: nf_tables: fix memory leak during stateful obj update (bsc#1229621).
• CVE-2022-49110: netfilter: conntrack: revisit gc autotuning (bsc#1237981).
• CVE-2022-49139: Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt (bsc#1238032).
• CVE-2022-49767: 9p/trans_fd: always use O_NONBLOCK read/write (bsc#1242493).
• CVE-2024-46763: fou: Fix null-ptr-deref in GRO (bsc#1230764).
• CVE-2024-50038: netfilter: xtables: avoid NFPROTO_UNSPEC where needed (bsc#1231910).
• CVE-2025-21726: padata: avoid UAF for reorder_work (bsc#1238865).
• CVE-2025-21785: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array (bsc#1238747).
• CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1238512).
• CVE-2025-21812: ax25: rcu protect dev->ax25_ptr (bsc#1238471).
• CVE-2025-21839: KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop (bsc#1239061).
• CVE-2025-22004: net: atm: fix use after free in lec_send() (bsc#1240835).
• CVE-2025-22020: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (bsc#1241280).
• CVE-2025-22045: x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs (bsc#1241433).
• CVE-2025-22055: net: fix geneve_opt length integer overflow (bsc#1241371).
• CVE-2025-22097: drm/vkms: Fix use after free and double free on init error (bsc#1241541).
• CVE-2025-2312: CIFS: New mount option for cifs.upcall namespace resolution (bsc#1239684).
• CVE-2025-23138: watch_queue: fix pipe accounting mismatch (bsc#1241648).
• CVE-2025-39735: jfs: fix slab-out-of-bounds read in ea_get() (bsc#1241625).

The following non-security bugs were fixed:

• cpufreq: ACPI: Mark boost policy as enabled when setting boost (bsc#1236777).
• cpufreq: Allow drivers to advertise boost enabled (bsc#1236777).
• cpufreq: Fix per-policy boost behavior on SoCs using cpufreq_boost_set_sw() (bsc#1236777).
• cpufreq: Support per-policy performance boost (bsc#1236777).
• x86/bhi: Do not set BHI_DIS_S in 32-bit mode (bsc#1242778).
• x86/bpf: Add IBHF call at end of classic BPF (bsc#1242778).
• x86/bpf: Call branch history clearing sequence on exit (bsc#1242778).