This is the start of the stable review cycle for the 6.18.38 release. There are 109 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.

Responses should be made by Sun, 05 Jul 2026 07:28:03 +0000. Anything received after that time might be too late.

The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.18.38-rc2... or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.18.y and the diffstat can be found below.

thanks,

greg k-h

------------- Pseudo-Shortlog of commits:

Greg Kroah-Hartman gregkh@linuxfoundation.org Linux 6.18.38-rc2

John Johansen john.johansen@canonical.com apparmor: advertise the tcp fast open fix is applied

HanQuan eilaimemedsnaimel@gmail.com net/tcp-ao: fix use-after-free of key in del_async path

Stepan Ionichev sozdayvek@gmail.com serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails

Hem Parekh hemparekh1596@gmail.com ksmbd: fix out-of-bounds read in smb_check_perm_dacl()

Markus Elfring elfring@users.sourceforge.net NFS: Prevent resource leak in nfs_alloc_server()

Igor Raits igor.raits@gmail.com NFSv4: clear exception state on successful mkdir retry

Michael Bommarito michael.bommarito@gmail.com NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr

Michael Bommarito michael.bommarito@gmail.com NFSv4/flexfiles: reject zero filehandle version count

Jeff Layton jlayton@kernel.org nfsd: reset write verifier on deferred writeback errors

Jeff Layton jlayton@kernel.org nfsd: avoid leaking pre-allocated openowner on unconfirmed retry race

Dominik Woźniak stalion@gmail.com nfsd: check get_user() return when reading princhashlen

Jeff Layton jlayton@kernel.org nfsd: fix inverted cp_ttl check in async copy reaper

Jeff Layton jlayton@kernel.org nfsd: fix posix_acl leak on SETACL decode failure

Guannan Wang wgnbuaa@gmail.com NFSD: Fix SECINFO_NO_NAME decode error cleanup

Johan Hovold johan@kernel.org i2c: core: fix adapter registration race

Steffen Persvold spersvold@gmail.com fbdev: modedb: Fix misaligned fields in the 1920x1080-60 mode

Tuo Li islituo@gmail.com fbdev: modedb: fix a possible UAF in fb_find_mode()

Ian Bridges icb@fastmail.org fbdev: Fix fb_new_modelist to prevent null-ptr-deref in fb_videomode_to_var

Vivian Wang wangruikang@iscas.ac.cn riscv: kfence: Call mark_new_valid_map() for kfence_unprotect()

Vivian Wang wangruikang@iscas.ac.cn riscv: mm: Extract helper mark_new_valid_map()

Wentao Liang vulab@iscas.ac.cn power: reset: linkstation-poweroff: fix use-after-free in the linkstation_poweroff_init()

Ashutosh Desai ashutoshdesai993@gmail.com KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path

Hyunwoo Kim imv4bel@gmail.com KVM: x86: hyper-v: Bound the bank index when querying sparse banks

Jonas Jelonek jelonek.jonas@gmail.com MIPS: smp: report dying CPU to RCU in stop_this_cpu()

Yizhou Zhao zhaoyz24@mails.tsinghua.edu.cn 9p: avoid putting oldfid in p9_client_walk() error path

Zhang Cen rollkingzzc@gmail.com ocfs2: reject oversized group bitmap descriptors

Yuho Choi dbgh9129@gmail.com rpmsg: char: Fix use-after-free on probe error path

Wentao Liang vulab@iscas.ac.cn fpga: region: fix use-after-free in child_regions_with_firmware()

Qingshuang Fu fuqingshuang@kylinos.cn irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove

Wentao Liang vulab@iscas.ac.cn pNFS: Fix use-after-free in pnfs_update_layout()

Huacai Chen chenhuacai@kernel.org LoongArch: Report dying CPU to RCU in stop_this_cpu()

Doruk Tan Ozturk doruk@0sec.ai tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done

Michal Koutný mkoutny@suse.com blk-cgroup: fix UAF in __blkcg_rstat_flush()

Fan Wu fanwu01@zju.edu.cn hdlc_ppp: sync per-proto timers before freeing hdlc state

Wentao Liang vulab@iscas.ac.cn pwrseq: core: fix use-after-free in pwrseq_debugfs_seq_next()

Tristan Madani tristan@talencesecurity.com gfs2: fix use-after-free in gfs2_qd_dealloc

Sam James sam@gentoo.org crypto: nx - fix nx_crypto_ctx_exit argument

Sean Christopherson seanjc@google.com KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned()

Sean Christopherson seanjc@google.com KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level

Michael Bommarito michael.bommarito@gmail.com exfat: fix potential use-after-free in exfat_find_dir_entry()

Maciej W. Rozycki macro@orcam.me.uk MIPS: DEC: Prevent initial console buffer from landing in XKPHYS

Dawei Feng dawei.feng@seu.edu.cn bpf: use kvfree() for replaced sysctl write buffer

Denis Arefev arefev@swemel.ru block: Avoid mounting the bdev pseudo-filesystem in userspace

Wenjie Qi qwjhust@gmail.com f2fs: keep atomic write retry from zeroing original data

Yongpeng Yang yangyongpeng@xiaomi.com f2fs: fix incorrect FI_NO_EXTENT handling in __destroy_extent_node()

Zhang Cen rollkingzzc@gmail.com f2fs: validate ACL entry sizes in f2fs_acl_from_disk()

Sunmin Jeong s_min.jeong@samsung.com f2fs: fix to round down start offset of fallocate for pin file

Wenjie Qi qwjhust@gmail.com f2fs: validate compress cache inode only when enabled

Wenjie Qi qwjhust@gmail.com f2fs: validate orphan inode entry count

Wenjie Qi qwjhust@gmail.com f2fs: pass correct iostat type for single node writes

Junrui Luo moonafterrain@outlook.com wifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers

Junjie Cao junjie.cao@intel.com wifi: iwlwifi: mld: fix race condition in PTP removal

Junjie Cao junjie.cao@intel.com wifi: iwlwifi: mvm: fix race condition in PTP removal

Luka Gejak luka.gejak@linux.dev wifi: rtw88: usb: fix memory leaks on USB write failures

Luka Gejak luka.gejak@linux.dev wifi: rtw88: increase TX report timeout to fix race condition

Bitterblue Smith rtl8821cerfe2@gmail.com wifi: rtlwifi: rtl8821ae: Fix C2H bit location in RX descriptor

Jose Ignacio Tornos Martinez jtornosm@redhat.com wifi: ath11k: fix warning when unbinding

ElXreno elxreno@gmail.com wifi: mt76: mt7925: don't disable AP BSS when removing TDLS peer

Zenm Chen zenmchen@gmail.com wifi: mt76: mt76x2u: Add support for ELECOM WDC-867SU3S

Mike Rapoport (Microsoft) rppt@kernel.org userfaultfd: ensure mremap_userfaultfd_fail() releases mmap_changing

Shaomin Chen eeesssooo020@gmail.com keys: Pin request_key_auth payload in instantiate paths

Jarkko Sakkinen jarkko@kernel.org KEYS: fix overflow in keyctl_pkey_params_get_2()

Konstantin Khorenko khorenko@virtuozzo.com gcov: use atomic counter updates to fix concurrent access crashes

Arnd Bergmann arnd@arndb.de err.h: use __always_inline on all error pointer helpers

Ard Biesheuvel ardb@kernel.org KVM: arm64: Omit tag sync on stage-2 mappings of the zero page

Usama Arif usama.arif@linux.dev block: invalidate cached plug timestamp after task switch

Ian Bridges icb@fastmail.org fbdev: fix use-after-free in store_modes()

Koichiro Den den@valinux.co.jp NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR

Ruslan Valiyev linuxoid@gmail.com apparmor: fix use-after-free in rawdata dedup loop

Bryam Vargas hexlabsecurity@proton.me apparmor: mediate the implicit connect of TCP fast open sendmsg

Maoyi Xie maoyixie.tju@gmail.com net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink

Yiming Qian yimingqian591@gmail.com net: skmsg: preserve sg.copy across SG transforms

Doruk Tan Ozturk doruk@0sec.ai mac802154: llsec: add skb_cow_data() before in-place crypto

Kuniyuki Iwashima kuniyu@google.com af_unix: Set gc_in_progress to true in unix_gc().

Jiajia Liu liujiajia@kylinos.cn wifi: mt76: add wcid publish check in mt76_sta_add

Konstantin Komarov almaz.alexandrovich@paragon-software.com ntfs3: reject direct userspace writes to reserved $LX* xattrs

Wongi Lee qw3rtyp0@gmail.com ipv4: account for fraggap on the paged allocation path

Wongi Lee qw3rtyp0@gmail.com ipv6: account for fraggap on the paged allocation path

Sven Eckelmann sven@narfation.org batman-adv: tvlv: avoid race of cifsnotfound handler state

Sven Eckelmann sven@narfation.org batman-adv: tvlv: enforce 2-byte alignment

Sven Eckelmann sven@narfation.org batman-adv: dat: prevent false sharing between VLANs

Sven Eckelmann sven@narfation.org batman-adv: tt: track roam count per VID

Sven Eckelmann sven@narfation.org batman-adv: tt: don't merge change entries with different VIDs

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: handle overlapping packets

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: prevent parallel modifications of last_recv

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: annotate last_recv_time access with READ/WRITE_ONCE

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: restrict number of unacked list entries

Sven Eckelmann sven@narfation.org batman-adv: v: prevent OGM aggregation on disabled hardif

Sven Eckelmann sven@narfation.org batman-adv: frag: avoid underflow of TTL

Sven Eckelmann sven@narfation.org batman-adv: frag: ensure fragment is writable before modifying TTL

Sven Eckelmann sven@narfation.org batman-adv: fix (m|b)cast csum after decrementing TTL

Sven Eckelmann sven@narfation.org batman-adv: ensure bcast is writable before modifying TTL

Sven Eckelmann sven@narfation.org batman-adv: gw: don't deselect gateway with active hardif

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: initialize last_recv_time during init

Sven Eckelmann sven@narfation.org batman-adv: prevent ELP transmission interval underflow

Sven Eckelmann sven@narfation.org batman-adv: bla: annotate lasttime access with READ/WRITE_ONCE

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: add only finished tp_vars to lists

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: handle seqno wrap-around for fast recovery detection

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: fix fast recovery precondition

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: avoid divide-by-zero for dec_cwnd

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: avoid window underflow

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: initialize dec_cwnd explicitly

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: initialize dup_acks explicitly

Sven Eckelmann sven@narfation.org batman-adv: tp_meter: keep unacked list in ascending ordered

NeilBrown neil@brown.name lockd: fix TEST handling when not all permissions are available.

Sasha Levin sashal@kernel.org Revert "PCI: qcom: Advertise Hotplug Slot Capability with no Command Completion support"

Paul Moore paul@paul-moore.com selinux: fix overlayfs mmap() and mprotect() access checks

Paul Moore paul@paul-moore.com lsm: add backing_file LSM hooks

Paolo Bonzini pbonzini@redhat.com KVM: x86: Fix shadow paging use-after-free due to unexpected role

-------------

Diffstat:

Makefile | 31 ++- arch/arm64/kvm/mmu.c | 5 + arch/loongarch/kernel/smp.c | 1 + arch/mips/dec/prom/console.c | 7 +- arch/mips/kernel/smp.c | 2 + arch/riscv/include/asm/cacheflush.h | 25 +- arch/riscv/include/asm/kfence.h | 7 +- arch/riscv/kernel/entry.S | 6 +- arch/x86/kvm/hyperv.c | 5 + arch/x86/kvm/mmu/mmu.c | 28 ++- arch/x86/kvm/svm/sev.c | 1 + block/bdev.c | 5 - block/blk-cgroup.c | 21 +- drivers/crypto/nx/nx.c | 6 +- drivers/crypto/nx/nx.h | 2 +- drivers/fpga/of-fpga-region.c | 3 +- drivers/i2c/i2c-core-base.c | 8 +- drivers/irqchip/irq-imgpdc.c | 6 + drivers/net/wan/hdlc_ppp.c | 15 +- drivers/net/wireless/ath/ath11k/dp.c | 1 + drivers/net/wireless/intel/iwlwifi/mld/agg.c | 9 + drivers/net/wireless/intel/iwlwifi/mld/ptp.c | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/ptp.c | 2 +- drivers/net/wireless/mediatek/mt76/mac80211.c | 15 +- drivers/net/wireless/mediatek/mt76/mt76x2/usb.c | 1 + drivers/net/wireless/mediatek/mt76/mt7925/main.c | 3 + .../net/wireless/realtek/rtlwifi/rtl8821ae/trx.h | 2 +- drivers/net/wireless/realtek/rtw88/tx.c | 7 +- drivers/net/wireless/realtek/rtw88/usb.c | 13 +- drivers/ntb/hw/epf/ntb_hw_epf.c | 3 +- drivers/pci/controller/dwc/pcie-qcom.c | 17 +- drivers/power/reset/linkstation-poweroff.c | 2 +- drivers/power/sequencing/core.c | 14 +- drivers/rpmsg/rpmsg_char.c | 15 +- drivers/tty/serial/8250/8250_dw.c | 4 +- drivers/video/fbdev/core/fbmem.c | 12 + drivers/video/fbdev/core/fbsysfs.c | 10 +- drivers/video/fbdev/core/modedb.c | 5 +- fs/backing-file.c | 17 +- fs/exfat/dir.c | 4 +- fs/f2fs/acl.c | 18 +- fs/f2fs/checkpoint.c | 14 +- fs/f2fs/data.c | 16 +- fs/f2fs/extent_cache.c | 19 +- fs/f2fs/file.c | 9 +- fs/f2fs/inode.c | 9 +- fs/f2fs/node.c | 2 +- fs/file_table.c | 27 ++- fs/fuse/passthrough.c | 2 +- fs/gfs2/super.c | 1 + fs/internal.h | 3 +- fs/lockd/svc4proc.c | 13 +- fs/lockd/svclock.c | 4 +- fs/lockd/svcproc.c | 15 +- fs/lockd/svcsubs.c | 35 ++- fs/nfs/client.c | 1 + fs/nfs/flexfilelayout/flexfilelayout.c | 4 + fs/nfs/nfs4proc.c | 5 +- fs/nfs/pnfs.c | 2 +- fs/nfs/pnfs_nfs.c | 4 +- fs/nfsd/nfs2acl.c | 17 +- fs/nfsd/nfs3acl.c | 17 +- fs/nfsd/nfs4proc.c | 2 +- fs/nfsd/nfs4recover.c | 3 +- fs/nfsd/nfs4state.c | 1 + fs/nfsd/nfs4xdr.c | 3 +- fs/nfsd/vfs.c | 6 +- fs/ntfs3/xattr.c | 12 + fs/ocfs2/suballoc.c | 22 ++ fs/overlayfs/dir.c | 2 +- fs/overlayfs/file.c | 2 +- fs/smb/server/smbacl.c | 4 +- fs/userfaultfd.c | 2 + include/keys/request_key_auth-type.h | 2 + include/linux/backing-file.h | 4 +- include/linux/blkdev.h | 16 +- include/linux/err.h | 12 +- include/linux/f2fs_fs.h | 1 + include/linux/fs.h | 13 ++ include/linux/kvm_host.h | 7 +- include/linux/lockd/lockd.h | 2 +- include/linux/lsm_audit.h | 2 +- include/linux/lsm_hook_defs.h | 5 + include/linux/lsm_hooks.h | 1 + include/linux/security.h | 22 ++ include/linux/skmsg.h | 15 +- include/net/rtnetlink.h | 2 + kernel/bpf/cgroup.c | 2 +- kernel/sched/core.c | 12 +- net/9p/client.c | 3 +- net/batman-adv/bat_iv_ogm.c | 11 +- net/batman-adv/bat_v.c | 1 + net/batman-adv/bat_v_ogm.c | 23 +- net/batman-adv/bridge_loop_avoidance.c | 28 +-- net/batman-adv/distributed-arp-table.c | 12 +- net/batman-adv/fragmentation.c | 22 +- net/batman-adv/fragmentation.h | 3 +- net/batman-adv/hard-interface.c | 28 +-- net/batman-adv/netlink.c | 10 +- net/batman-adv/routing.c | 73 +++++- net/batman-adv/tp_meter.c | 115 +++++---- net/batman-adv/translation-table.c | 12 +- net/batman-adv/tvlv.c | 69 +++++- net/batman-adv/types.h | 21 +- net/core/filter.c | 27 +++ net/core/rtnetlink.c | 8 + net/core/skmsg.c | 2 + net/ipv4/ip_gre.c | 6 + net/ipv4/ip_output.c | 7 +- net/ipv4/tcp_ao.c | 4 + net/ipv6/ip6_output.c | 9 +- net/mac802154/llsec.c | 14 ++ net/tipc/crypto.c | 9 + net/tls/tls_sw.c | 4 + net/unix/garbage.c | 2 + security/apparmor/include/policy_unpack.h | 19 ++ security/apparmor/lsm.c | 16 +- security/apparmor/net.c | 2 + security/apparmor/policy.c | 8 +- security/keys/internal.h | 2 + security/keys/keyctl.c | 24 +- security/keys/keyctl_pkey.c | 9 +- security/keys/request_key_auth.c | 33 ++- security/security.c | 109 +++++++++ security/selinux/hooks.c | 256 +++++++++++++++------ security/selinux/include/objsec.h | 11 + virt/kvm/eventfd.c | 12 +- 127 files changed, 1368 insertions(+), 412 deletions(-)