kernel/linux.git/security/selinux/include, branch v6.18.21

selinux: rename the cred_security_struct variables to "crsec"

2025-11-20T21:47:50+00:00

Along with the renaming from task_security_struct to cred_security_struct, rename the local variables to "crsec" from "tsec". This both fits with existing conventions and helps distinguish between task and cred related variables. No functional changes. Acked-by: Stephen Smalley Signed-off-by: Paul Moore

selinux: move avdcache to per-task security struct

2025-11-20T21:43:51+00:00

The avdcache is meant to be per-task; move it to a new task_security_struct that is duplicated per-task. Cc: stable@vger.kernel.org Fixes: 5d7ddc59b3d89b724a5aa8f30d0db94ff8d2d93f ("selinux: reduce path walk overhead") Signed-off-by: Stephen Smalley [PM: line length fixes] Signed-off-by: Paul Moore

selinux: rename task_security_struct to cred_security_struct

2025-11-20T21:43:50+00:00

Before Linux had cred structures, the SELinux task_security_struct was per-task and although the structure was switched to being per-cred long ago, the name was never updated. This change renames it to cred_security_struct to avoid confusion and pave the way for the introduction of an actual per-task security structure for SELinux. No functional change. Cc: stable@vger.kernel.org Signed-off-by: Stephen Smalley Signed-off-by: Paul Moore

Merge tag 'lsm-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

2025-09-30T15:48:29+00:00

Pull lsm updates from Paul Moore: - Move the management of the LSM BPF security blobs into the framework In order to enable multiple LSMs we need to allocate and free the various security blobs in the LSM framework and not the individual LSMs as they would end up stepping all over each other. - Leverage the lsm_bdev_alloc() helper in lsm_bdev_alloc() Make better use of our existing helper functions to reduce some code duplication. - Update the Rust cred code to use 'sync::aref' Part of a larger effort to move the Rust code over to the 'sync' module. - Make CONFIG_LSM dependent on CONFIG_SECURITY As the CONFIG_LSM Kconfig setting is an ordered list of the LSMs to enable a boot, it obviously doesn't make much sense to enable this when CONFIG_SECURITY is disabled. - Update the LSM and CREDENTIALS sections in MAINTAINERS with Rusty bits Add the Rust helper files to the associated LSM and CREDENTIALS entries int the MAINTAINERS file. We're trying to improve the communication between the two groups and making sure we're all aware of what is going on via cross-posting to the relevant lists is a good way to start. * tag 'lsm-pr-20250926' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: lsm: CONFIG_LSM can depend on CONFIG_SECURITY MAINTAINERS: add the associated Rust helper to the CREDENTIALS section MAINTAINERS: add the associated Rust helper to the LSM section rust,cred: update AlwaysRefCounted import to sync::aref security: use umax() to improve code lsm,selinux: Add LSM blob support for BPF objects lsm: use lsm_blob_alloc() in lsm_bdev_alloc()

selinux: enable per-file labeling for functionfs

2025-09-07T16:54:56+00:00

This patch adds support for genfscon per-file labeling of functionfs files as well as support for userspace to apply labels after new functionfs endpoints are created. This allows for separate labels and therefore access control on a per-endpoint basis. An example use case would be for the default endpoint EP0 used as a restricted control endpoint, and additional usb endpoints to be used by other more permissive domains. It should be noted that if there are multiple functionfs mounts on a system, genfs file labels will apply to all mounts, and therefore will not likely be as useful as the userspace relabeling portion of this patch - the addition to selinux_is_genfs_special_handling(). This patch introduces the functionfs_seclabel policycap to maintain existing functionfs genfscon behavior unless explicitly enabled. Signed-off-by: Neill Kapron Acked-by: Stephen Smalley [PM: trim changelog, apply boolean logic fixup] Signed-off-by: Paul Moore

lsm,selinux: Add LSM blob support for BPF objects

2025-08-11T21:56:09+00:00

This patch introduces LSM blob support for BPF maps, programs, and tokens to enable LSM stacking and multiplexing of LSM modules that govern BPF objects. Additionally, the existing BPF hooks used by SELinux have been updated to utilize the new blob infrastructure, removing the assumption of exclusive ownership of the security pointer. Signed-off-by: Blaise Boscaccy [PM: dropped local variable init, style fixes] Signed-off-by: Paul Moore

selinux: Remove unused function selinux_policycap_netif_wildcard()

2025-08-11T15:59:11+00:00

This is unused since commit a3d3043ef24a ("selinux: get netif_wildcard policycap from policy instead of cache"). Signed-off-by: Yue Haibing Acked-by: Stephen Smalley Signed-off-by: Paul Moore

selinux: optimize selinux_inode_getattr/permission() based on neveraudit|permissive

2025-06-19T21:23:05+00:00

Extend the task avdcache to also cache whether the task SID is both permissive and neveraudit, and return immediately if so in both selinux_inode_getattr() and selinux_inode_permission(). The same approach could be applied to many of the hook functions although the avdcache would need to be updated for more than directory search checks in order for this optimization to be beneficial for checks on objects other than directories. To test, apply https://github.com/SELinuxProject/selinux/pull/473 to your selinux userspace, build and install libsepol, and use the following CIL policy module: $ cat neverauditpermissive.cil (typeneveraudit unconfined_t) (typepermissive unconfined_t) Without this module inserted, running the following commands: perf record make -jN # on an already built allmodconfig tree perf report --sort=symbol,dso yields the following percentages (only showing __d_lookup_rcu for reference and only showing relevant SELinux functions): 1.65% [k] __d_lookup_rcu 0.53% [k] selinux_inode_permission 0.40% [k] selinux_inode_getattr 0.15% [k] avc_lookup 0.05% [k] avc_has_perm 0.05% [k] avc_has_perm_noaudit 0.02% [k] avc_policy_seqno 0.02% [k] selinux_file_permission 0.01% [k] selinux_inode_alloc_security 0.01% [k] selinux_file_alloc_security for a total of 1.24% for SELinux compared to 1.65% for __d_lookup_rcu(). After running the following command to insert this module: semodule -i neverauditpermissive.cil and then re-running the same perf commands from above yields the following non-zero percentages: 1.74% [k] __d_lookup_rcu 0.31% [k] selinux_inode_permission 0.03% [k] selinux_inode_getattr 0.03% [k] avc_policy_seqno 0.01% [k] avc_lookup 0.01% [k] selinux_file_permission 0.01% [k] selinux_file_open for a total of 0.40% for SELinux compared to 1.74% for __d_lookup_rcu(). Signed-off-by: Stephen Smalley Signed-off-by: Paul Moore

selinux: introduce neveraudit types

2025-06-19T21:23:04+00:00

Introduce neveraudit types i.e. types that should never trigger audit messages. This allows the AVC to skip all audit-related processing for such types. Note that neveraudit differs from dontaudit not only wrt being applied for all checks with a given source type but also in that it disables all auditing, not just permission denials. When a type is both a permissive type and a neveraudit type, the security server can short-circuit the security_compute_av() logic, allowing all permissions and not auditing any permissions. This change just introduces the basic support but does not yet further optimize the AVC or hook function logic when a type is both a permissive type and a dontaudit type. Suggested-by: Paul Moore Signed-off-by: Stephen Smalley Signed-off-by: Paul Moore

Merge tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2025-05-28T22:24:36+00:00

Pull networking updates from Paolo Abeni: "Core: - Implement the Device Memory TCP transmit path, allowing zero-copy data transmission on top of TCP from e.g. GPU memory to the wire. - Move all the IPv6 routing tables management outside the RTNL scope, under its own lock and RCU. The route control path is now 3x times faster. - Convert queue related netlink ops to instance lock, reducing again the scope of the RTNL lock. This improves the control plane scalability. - Refactor the software crc32c implementation, removing unneeded abstraction layers and improving significantly the related micro-benchmarks. - Optimize the GRO engine for UDP-tunneled traffic, for a 10% performance improvement in related stream tests. - Cover more per-CPU storage with local nested BH locking; this is a prep work to remove the current per-CPU lock in local_bh_disable() on PREMPT_RT. - Introduce and use nlmsg_payload helper, combining buffer bounds verification with accessing payload carried by netlink messages. Netfilter: - Rewrite the procfs conntrack table implementation, improving considerably the dump performance. A lot of user-space tools still use this interface. - Implement support for wildcard netdevice in netdev basechain and flowtables. - Integrate conntrack information into nft trace infrastructure. - Export set count and backend name to userspace, for better introspection. BPF: - BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops programs and can be controlled in similar way to traditional qdiscs using the "tc qdisc" command. - Refactor the UDP socket iterator, addressing long standing issues WRT duplicate hits or missed sockets. Protocols: - Improve TCP receive buffer auto-tuning and increase the default upper bound for the receive buffer; overall this improves the single flow maximum thoughput on 200Gbs link by over 60%. - Add AFS GSSAPI security class to AF_RXRPC; it provides transport security for connections to the AFS fileserver and VL server. - Improve TCP multipath routing, so that the sources address always matches the nexthop device. - Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS, and thus preventing DoS caused by passing around problematic FDs. - Retire DCCP socket. DCCP only receives updates for bugs, and major distros disable it by default. Its removal allows for better organisation of TCP fields to reduce the number of cache lines hit in the fast path. - Extend TCP drop-reason support to cover PAWS checks. Driver API: - Reorganize PTP ioctl flag support to require an explicit opt-in for the drivers, avoiding the problem of drivers not rejecting new unsupported flags. - Converted several device drivers to timestamping APIs. - Introduce per-PHY ethtool dump helpers, improving the support for dump operations targeting PHYs. Tests and tooling: - Add support for classic netlink in user space C codegen, so that ynl-c can now read, create and modify links, routes addresses and qdisc layer configuration. - Add ynl sub-types for binary attributes, allowing ynl-c to output known struct instead of raw binary data, clarifying the classic netlink output. - Extend MPTCP selftests to improve the code-coverage. - Add tests for XDP tail adjustment in AF_XDP. New hardware / drivers: - OpenVPN virtual driver: offload OpenVPN data channels processing to the kernel-space, increasing the data transfer throughput WRT the user-space implementation. - Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC. - Broadcom asp-v3.0 ethernet driver. - AMD Renoir ethernet device. - ReakTek MT9888 2.5G ethernet PHY driver. - Aeonsemi 10G C45 PHYs driver. Drivers: - Ethernet high-speed NICs: - nVidia/Mellanox (mlx5): - refactor the steering table handling to significantly reduce the amount of memory used - add support for complex matches in H/W flow steering - improve flow streeing error handling - convert to netdev instance locking - Intel (100G, ice, igb, ixgbe, idpf): - ice: add switchdev support for LLDP traffic over VF - ixgbe: add firmware manipulation and regions devlink support - igb: introduce support for frame transmission premption - igb: adds persistent NAPI configuration - idpf: introduce RDMA support - idpf: add initial PTP support - Meta (fbnic): - extend hardware stats coverage - add devlink dev flash support - Broadcom (bnxt): - add support for RX-side device memory TCP - Wangxun (txgbe): - implement support for udp tunnel offload - complete PTP and SRIOV support for AML 25G/10G devices - Ethernet NICs embedded and virtual: - Google (gve): - add device memory TCP TX support - Amazon (ena): - support persistent per-NAPI config - Airoha: - add H/W support for L2 traffic offload - add per flow stats for flow offloading - RealTek (rtl8211): add support for WoL magic packet - Synopsys (stmmac): - dwmac-socfpga 1000BaseX support - add Loongson-2K3000 support - introduce support for hardware-accelerated VLAN stripping - Broadcom (bcmgenet): - expose more H/W stats - Freescale (enetc, dpaa2-eth): - enetc: add MAC filter, VLAN filter RSS and loopback support - dpaa2-eth: convert to H/W timestamping APIs - vxlan: convert FDB table to rhashtable, for better scalabilty - veth: apply qdisc backpressure on full ring to reduce TX drops - Ethernet switches: - Microchip (kzZ88x3): add ETS scheduler support - Ethernet PHYs: - RealTek (rtl8211): - add support for WoL magic packet - add support for PHY LEDs - CAN: - Adds RZ/G3E CANFD support to the rcar_canfd driver. - Preparatory work for CAN-XL support. - Add self-tests framework with support for CAN physical interfaces. - WiFi: - mac80211: - scan improvements with multi-link operation (MLO) - Qualcomm (ath12k): - enable AHB support for IPQ5332 - add monitor interface support to QCN9274 - add multi-link operation support to WCN7850 - add 802.11d scan offload support to WCN7850 - monitor mode for WCN7850, better 6 GHz regulatory - Qualcomm (ath11k): - restore hibernation support - MediaTek (mt76): - WiFi-7 improvements - implement support for mt7990 - Intel (iwlwifi): - enhanced multi-link single-radio (EMLSR) support on 5 GHz links - rework device configuration - RealTek (rtw88): - improve throughput for RTL8814AU - RealTek (rtw89): - add multi-link operation support - STA/P2P concurrency improvements - support different SAR configs by antenna - Bluetooth: - introduce HCI Driver protocol - btintel_pcie: do not generate coredump for diagnostic events - btusb: add HCI Drv commands for configuring altsetting - btusb: add RTL8851BE device 0x0bda:0xb850 - btusb: add new VID/PID 13d3/3584 for MT7922 - btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925 - btnxpuart: implement host-wakeup feature" * tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1611 commits) selftests/bpf: Fix bpf selftest build warning selftests: netfilter: Fix skip of wildcard interface test net: phy: mscc: Stop clearing the the UDPv4 checksum for L2 frames net: openvswitch: Fix the dead loop of MPLS parse calipso: Don't call calipso functions for AF_INET sk. selftests/tc-testing: Add a test for HFSC eltree double add with reentrant enqueue behaviour on netem net_sched: hfsc: Address reentrant enqueue adding class to eltree twice octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback octeontx2-pf: QOS: Perform cache sync on send queue teardown net: mana: Add support for Multi Vports on Bare metal net: devmem: ncdevmem: remove unused variable net: devmem: ksft: upgrade rx test to send 1K data net: devmem: ksft: add 5 tuple FS support net: devmem: ksft: add exit_wait to make rx test pass net: devmem: ksft: add ipv4 support net: devmem: preserve sockc_err page_pool: fix ugly page_pool formatting net: devmem: move list_add to net_devmem_bind_dmabuf. selftests: netfilter: nft_queue.sh: include file transfer duration in log message net: phy: mscc: Fix memory leak when using one step timestamping ...