# Linux Kernel 6.6.151

- Product: Linux Kernel (https://whatsnew.fyi/product/linux-kernel)
- Vendor: Linux Kernel Organization
- Date: 2026-08-09
- Version: 6.6.151
- Original notes: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.151
- Permalink: https://whatsnew.fyi/product/linux-kernel/releases/6.6.151
- 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: typec: ucsi: Correct teardown ordering in ucsi_init() error path
- **fixed** — drm/tegra: fbdev: Do not assign to struct drm_fb_helper.info
- **fixed** — ALSA: hda: codecs: hdmi: disable keep-alive before audio format change
- **fixed** — drm/i915/hdcp: check streams[] bounds before overflow
- **fixed** — drm/i915/hdcp: require monotonically increasing seq_num_v
- **fixed** — sctp: close UDP tunnel sockets during netns teardown
- **fixed** — mptcp: pm: userspace: fix use-after-free in get_local_id
- **fixed** — ceph: fix refcount leak in ceph_readdir()
- **fixed** — can: isotp: fix timer drain order, wakeup handling and tx_gen ordering
- **fixed** — sctp: avoid auth_enable sysctl UAF during netns teardown
- **fixed** — wifi: brcmfmac: drain bus_reset work on device removal
- **fixed** — wifi: brcmfmac: fix 43752 SDIO FWVID incorrectly labelled as Cypress (CYW)
- **fixed** — wifi: ath6kl: fix use-after-free in aggr_reset_state()
- **fixed** — media: v4l2-fwnode: Fix subdev owner overwritten in v4l2_async_register_subdev_sensor()
- **fixed** — netfilter: nf_tables: clone set on flush only
- **fixed** — rxrpc: Fix irq-disabled in local_bh_enable()
- **fixed** — drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions
- **fixed** — usb: typec: ucsi: Fix race condition and ordering in port unregistration
- **fixed** — usb: gadget: f_tcm: synchronize delayed set_alt with teardown
- **fixed** — mm/huge_memory: unlock i_mmap_rwsem before releasing after-split folios

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

- Linux 6.6.151
- usb: typec: ucsi: Correct teardown ordering in ucsi_init() error path
- drm/tegra: fbdev: Do not assign to struct drm_fb_helper.info
- ALSA: hda: codecs: hdmi: disable keep-alive before audio format change
- drm/i915/hdcp: check streams[] bounds before overflow
- drm/i915/hdcp: require monotonically increasing seq_num_v
- drm/i915/hdcp: Move to using intel_display in intel_hdcp
- drm/i915/hdcp: migrate away from kdev_to_i915() in bind/unbind
- drm/i915/fbc: Extract intel_fbc_has_fences()
- sctp: close UDP tunnel sockets during netns teardown
- mptcp: pm: userspace: fix use-after-free in get_local_id
- mptcp: pm: use addr entry for get_local_id
- mptcp: add mptcp_userspace_pm_lookup_addr helper
- mptcp: pm: avoid code duplication to lookup endp
- ceph: fix refcount leak in ceph_readdir()
- ceph: print cluster fsid and client global_id in all debug logs
- libceph: add doutc and *_client debug macros support
- can: isotp: fix timer drain order, wakeup handling and tx_gen ordering
- can: use skb hash instead of private variable in headroom
- sctp: avoid auth_enable sysctl UAF during netns teardown
- sysctl: treewide: constify ctl_table_header::ctl_table_arg
- wifi: brcmfmac: drain bus_reset work on device removal
- wifi: brcmfmac: set F2 blocksize to 256 for BCM43752
- wifi: brcmfmac: fix 43752 SDIO FWVID incorrectly labelled as Cypress (CYW)
- wifi: ath6kl: fix use-after-free in aggr_reset_state()
- media: v4l2-fwnode: Fix subdev owner overwritten in v4l2_async_register_subdev_sensor()
- media: v4l: async: Set owner for async sub-devices
- netfilter: nf_tables: clone set on flush only
- rxrpc: Fix irq-disabled in local_bh_enable()
- media: imx219: Fix maximum frame length in lines
- media: i2c: imx219: Rename VTS to FRM_LENGTH
- media: i2c: imx219: Calculate crop rectangle dynamically
- media: i2c: imx219: Group functions by purpose
- media: i2c: imx219: Drop IMX219_VTS_* macros
- media: i2c: imx219: Don't store the current mode in the imx219 structure
- media: i2c: imx219: Access height from active format in imx219_set_ctrl
- drm/i915/vrr: require valid min/max vfreq for VRR
- drm/i915/vrr: Check HAS_VRR() first in intel_vrr_is_capable()
- drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions
- drm/tegra: fbdev: Remove offset into framebuffer memory
- drm/fb-helper: Allocate and release fb_info in single place
- usb: typec: ucsi: Fix race condition and ordering in port unregistration
- usb: typec: ucsi: split connector lock classes
- usb: typec: ucsi: Only enable supported notifications
- usb: gadget: f_tcm: synchronize delayed set_alt with teardown
- drm: renesas: rzg2l_mipi_dsi: Increase reset deassertion delay
- drm: renesas: Move RZ/G2L MIPI DSI driver to rz-du
- usb: musb: omap2430: Do not put borrowed of_node in probe
- usb: musb: omap2430: clean up probe error handling
- Revert "ia64: Make acpi_cpufreq_cpu_exit return void"
- gpio: pch: use raw_spinlock_t for the register lock
- firmware: stratix10-svc: fix memory leaks and list corruption bugs
- mm/huge_memory: unlock i_mmap_rwsem before releasing after-split folios
- mm/hugetlb: fix swap entry corruption when clearing uffd-wp at fork()
- iommu/sva: move x86 disable check before allocation
- ata: ahci: Make ahci_ignore_port() handle empty mask_port_map
- ata: libahci_platform: Do not set mask_port_map when not needed
- HID: logitech-dj: Fix maxfield check in DJ short report validation
- spi: spi-cadence: enable SPI_CONTROLLER_MUST_TX
- drm/vmwgfx: validate external BO copy bounds for both stride paths
- drm/vmwgfx: use check_add_overflow for shader size+offset bound
- drm/vmwgfx: bound DMA command body size against suffix pointer
- drm/vmwgfx: validate DRAW_PRIMITIVES header size before division
- drm/vmwgfx: drop dma_buf reference on foreign-fd prime import
- drm/vmwgfx: reject DX_BIND_QUERY without a DX context
- drm/vmwgfx: fix guest_memory_dirty bitfield cl

_[Truncated at 4000 characters — full notes: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.151]_