# Linux Kernel 5.10.266

- Product: Linux Kernel (https://whatsnew.fyi/product/linux-kernel)
- Vendor: Linux Kernel Organization
- Date: 2026-08-23
- Version: 5.10.266
- Original notes: https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.266
- Permalink: https://whatsnew.fyi/product/linux-kernel/releases/5.10.266
- Labels: longterm

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — USB serial keyspan_pda information leak
- **fixed** — net ethernet ti am65-cpsw error handling in am65_cpsw_nuss_probe()
- **fixed** — i2c smbus check for parent device before dereference
- **fixed** — udmabuf ensure cache synchronisation in begin_cpu_udmabuf()
- **fixed** — binfmt_misc use exe_file_deny_write_access() for interpreter clone
- **fixed** — net smc splice entry lifetime imbalance in smc_rx_splice
- **changed** — net smc enable rdma write inline if qp has sufficient inline space
- **fixed** — net ethernet ti am65-cpsw-nuss fix port_id extraction from SRC TAG
- **added** — net ethernet ti am65-cpsw add multi port support in mac-only mode
- **fixed** — af_packet don't send zero-byte data in tpacket_snd()
- **fixed** — ASoC xilinx formatter_pcm pass aud_drv_data to irq handlers
- **fixed** — net packet fix wrong transport_header when sending VLAN-tagged frame
- **fixed** — netfilter ipset fix list type element drift bug
- **fixed** — netfilter flowtable publish GC-visible tuple last
- **fixed** — netfilter ipset fix refcount race between list:set GC and swap
- **fixed** — crypto ccm set rfc4309 maxauthsize from child
- **fixed** — net atlantic free stranded TX buffers on ring deinit
- **fixed** — mm ptdump stabilise against page table freeing using init_mm
- **fixed** — net sched act_gact act_police range check the fallback control action
- **fixed** — sched psi shut down rtpoll_timer in psi_cgroup_free()

The 120 most recent commits in this release — the full changelog is longer:

- Linux 5.10.266
- ring-buffer: Use current_context for safe per-CPU buffer swap
- ring-buffer: Remove jump to out label in ring_buffer_swap_cpu()
- USB: serial: keyspan_pda: fix information leak
- net: ethernet: ti: am65-cpsw: fix error handling in am65_cpsw_nuss_probe()
- i2c: smbus: Check for parent device before dereference
- udmabuf: Ensure to perform cache synchronisation in begin_cpu_udmabuf()
- binfmt_misc: use exe_file_deny_write_access() for the interpreter clone
- net: smc: fix splice entry lifetime imbalance in smc_rx_splice
- net/smc: rdma write inline if qp has sufficient inline space
- net: ethernet: ti: am65-cpsw-nuss: Fix port_id extraction from SRC TAG
- net: ethernet: ti: am65-cpsw: add multi port support in mac-only mode
- net: ethernet: ti: am65-cpsw: move free desc queue mode selection in pdata
- net: ethernet: ti: am65-cpsw: move ale selection in pdata
- af_packet: Don't send zero-byte data in tpacket_snd().
- ASoC: xilinx: formatter_pcm: pass aud_drv_data to irq handlers
- net: packet: fix wrong transport_header when sending VLAN-tagged frame
- netfilter: ipset: fix list type element drift bug
- netfilter: flowtable: publish GC-visible tuple last
- netfilter: nf_tables_offload: suppress WARN_ON_ONCE for ENOMEM in abort path
- netfilter: ipset: fix refcount race between list:set GC and swap
- crypto: ccm - Set rfc4309 maxauthsize from child
- arm64: tegra: Add EL2 virtual timer interrupt for Tegra194
- net: atlantic: free stranded TX buffers on ring deinit
- mm/ptdump: always stabilise against page table freeing using init_mm
- net/sched: act_gact, act_police: range check the fallback control action
- sched/psi: Shut down rtpoll_timer in psi_cgroup_free()
- ALSA: usx2y: bound the hwdep mmap fault offset
- ALSA: usx2y: Fix potential leaks of uninitialized memory
- drm/amd/pm: fix torn gpu metrics reads
- hwmon: (npcm750-pwm-fan): stop fan timer on device detach
- can: gs_usb: gs_usb_receive_bulk_callback(): resubmit URB on skb allocation failure
- binfmt_misc: restore write access when removing an entry
- fs: don't block write during exec on pre-content watched files
- fsnotify: opt-in for permission events at file open time
- i2c: iproc: reset bus after timeout if START_BUSY is stuck
- i2c: bcm-iproc: remove printout on handled timeouts
- ice: fix memory leak in ice_lbtest_prepare_rings()
- ice: fix VF interrupts cleanup
- scsi: scsi_debug: Fix REPORT ZONES alloc_len underflow OOB write
- scsi: scsi_debug: Rename zone type constants
- scsi: sd: sd_zbc: Return early in sd_zbc_check_zoned_characteristics()
- scsi: sd: sd_zbc: Use logical blocks as unit when querying zones
- scsi: sd: sd_zbc: Improve source code documentation
- net: pktgen: fix proc entry use-after-free
- net: pktgen: fix code style (WARNING: Block comments)
- mm/vmstat: fold stranded per-cpu node stats when a node comes online
- Bluetooth: HIDP: reject frames without a transaction header
- skbuff: introduce skb_pull_data
- ftrace: Add global mutex to serialize trace_parser access
- super: fix emergency thaw deadlock on frozen block devices
- net: gro: fix double aggregation of flush-marked skbs
- net/sched: serialize qdisc_rtab_list against concurrent get/put
- ceph: fix hanging __ceph_get_caps() with stale mds_wanted
- ceph: rename _to_client() to _to_fs_client()
- libceph: add doutc and *_client debug macros support
- libceph: fix two unsafe bare decodes in decode_lockers()
- libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
- libceph: Amend checking to fix `make W=1` build breakage
- ceph: avoid fs reclaim while using current->journal_info
- sctp: avoid auth_enable sysctl UAF during netns teardown
- mptcp: decrement subflows counter on failed passive join
- mptcp: fix subflow accounting on close
- serial: sc16is7xx: implement gpio get_direction() callback
- serial: sc16is7xx: fix regression with GPIO configuration
- serial: sc16is7xx: remove

_[Truncated at 4000 characters — full notes: https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.266]_