In the Linux kernel, the following vulnerability has been resolved:
io_uring/rsrc: fix folio unpinning
syzbot complains about an unmapping failure:
[ 108.070381][ T14] kernel BUG at mm/gup.c:71! [ 108.070502][ T14] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP [ 108.123672][ T14] Hardware name: QEMU KVM Virtual Machine, BIOS edk2-20250221-8.fc42 02/21/2025 [ 108.127458][ T14] Workqueue: iou_exit io_ring_exit_work [ 108.174205][ T14] Call trace: [ 108.175649][ T14] sanity_check_pinned_pages+0x7cc/0x7d0 (P) [ 108.178138][ T14] unpin_user_page+0x80/0x10c [ 108.180189][ T14] io_release_ubuf+0x84/0xf8 [ 108.182196][ T14] io_free_rsrc_node+0x250/0x57c [ 108.184345][ T14] io_rsrc_data_free+0x148/0x298 [ 108.186493][ T14] io_sqe_buffers_unregister+0x84/0xa0 [ 108.188991][ T14] io_ring_ctx_free+0x48/0x480 [ 108.191057][ T14] io_ring_exit_work+0x764/0x7d8 [ 108.193207][ T14] process_one_work+0x7e8/0x155c [ 108.195431][ T14] worker_thread+0x958/0xed8 [ 108.197561][ T14] kthread+0x5fc/0x75c [ 108.199362][ T14] ret_from_fork+0x10/0x20
We can pin a tail page of a folio, but then io_uring will try to unpin the head page of the folio. While it should be fine in terms of keeping the page actually alive, mm folks say it's wrong and triggers a debug warning. Use unpin_user_folio() instead of unpin_user_page*.
[axboe: adapt to current tree, massage commit message]
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-tools-develUpgrade kernel6.12-libbpf-staticUpgrade kernel6.12-toolsUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-modules-extraUpgrade kernel6.12-libbpfUpgrade python3-perf6.12-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel6.12Upgrade kernel-livepatch-6.12.37-61.105Upgrade bpftool6.12-debuginfoUpgrade bpftool6.12Upgrade python3-perf6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-develUpgrade perf6.12Upgrade kernel6.12-headersUpgrade kernel6.12-libbpf-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-debuginfo | Sep 9, 2025 | Jul 9, 2025 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Suse | — | Upgrade kernel-devel-azureUpgrade kernel-rtUpgrade kernel-kvmsmallUpgrade kernel-symsUpgrade kernel-sourceUpgrade kernel-zfcpdumpUpgrade dtb-exynosUpgrade kernel-azure-develUpgrade kernel-rt-develUpgrade kernel-source-azureUpgrade kselftests-kmp-64kbUpgrade kernel-source-vanillaUpgrade dtb-allwinnerUpgrade dtb-alteraUpgrade dtb-mediatekUpgrade gfs2-kmp-rtUpgrade kernel-develUpgrade gfs2-kmp-defaultUpgrade dtb-qcomUpgrade kernel-64kb-develUpgrade ocfs2-kmp-defaultUpgrade dtb-lgUpgrade kernel-default-vdsoUpgrade dtb-rockchipUpgrade dtb-nvidiaUpgrade dtb-caviumUpgrade kernel-rt-livepatchUpgrade dlm-kmp-64kbUpgrade kernel-syms-azureUpgrade dtb-xilinxUpgrade cluster-md-kmp-rtUpgrade kernel-kvmsmall-develUpgrade kernel-rt-extraUpgrade dtb-armUpgrade kernel-default-optionalUpgrade kernel-64kbUpgrade gfs2-kmp-64kbUpgrade kernel-64kb-extraUpgrade dtb-hisiliconUpgrade cluster-md-kmp-64kbUpgrade kernel-obs-qaUpgrade kernel-azureUpgrade dtb-renesasUpgrade kernel-macrosUpgrade dtb-sprdUpgrade kernel-defaultUpgrade kernel-64kb-optionalUpgrade reiserfs-kmp-defaultUpgrade kernel-kvmsmall-vdsoUpgrade dtb-socionextUpgrade dlm-kmp-rtUpgrade dlm-kmp-defaultUpgrade kernel-rt-livepatch-develUpgrade kernel-default-baseUpgrade kernel-rt-optionalUpgrade cluster-md-kmp-defaultUpgrade kernel-obs-buildUpgrade kernel-default-extraUpgrade dtb-amdUpgrade dtb-broadcomUpgrade dtb-amlogicUpgrade ocfs2-kmp-rtUpgrade kernel-docs-htmlUpgrade kernel-default-livepatchUpgrade dtb-amazonUpgrade dtb-marvellUpgrade kernel-default-livepatch-develUpgrade dtb-freescaleUpgrade dtb-apmUpgrade ocfs2-kmp-64kbUpgrade kselftests-kmp-rtUpgrade kernel-rt-vdsoUpgrade kernel-docsUpgrade kselftests-kmp-defaultUpgrade kernel-default-develUpgrade dtb-apple | Dec 5, 2025 | Aug 18, 2025 |
| Ubuntu | — | Upgrade linux-image-oracle-6.14Upgrade linux-image-realtimeUpgrade linux-image-6.14.0-1015-oracle-64kUpgrade linux-image-6.14.0-1015-aws-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-aws-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-oem-6.14Upgrade linux-image-virtualUpgrade linux-image-6.14.0-1014-azureUpgrade linux-image-generic-64k-6.14Upgrade linux-image-azure-6.14Upgrade linux-image-6.14.0-1018-gcpUpgrade linux-image-oracleUpgrade linux-image-oem-24.04Upgrade linux-image-gcpUpgrade linux-image-awsUpgrade linux-image-6.14.0-1018-gcp-64kUpgrade linux-image-oem-24.04cUpgrade linux-image-gcp-64kUpgrade linux-image-gcp-6.14Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-azure-nvidia-6.14Upgrade linux-image-6.14.0-34-genericUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-oem-24.04aUpgrade linux-image-azureUpgrade linux-image-aws-64k-6.14Upgrade linux-image-realtime-6.14Upgrade linux-image-azure-nvidiaUpgrade linux-image-6.14.0-1014-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-raspi-6.14Upgrade linux-image-raspiUpgrade linux-image-6.14.0-1016-raspiUpgrade linux-image-6.14.0-34-generic-64kUpgrade linux-image-6.14.0-1015-oracleUpgrade linux-image-6.14.0-1014-oemUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-generic-6.14Upgrade linux-image-6.14.0-1007-azure-nvidiaUpgrade linux-image-6.14.0-1015-awsUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-aws-6.14Upgrade linux-image-genericUpgrade linux-image-virtual-6.14Upgrade linux-image-generic-64k | Jul 14, 2025 | Jul 9, 2025 |
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