In the Linux kernel, the following vulnerability has been resolved:
mm, thp: bail out early in collapse_file for writeback page
Currently collapse_file does not explicitly check PG_writeback, instead, page_has_private and try_to_release_page are used to filter writeback pages. This does not work for xfs with blocksize equal to or larger than pagesize, because in such case xfs has no page->private.
This makes collapse_file bail out early for writeback page. Otherwise, xfs end_page_writeback will panic as follows.
page:fffffe00201bcc80 refcount:0 mapcount:0 mapping:ffff0003f88c86a8 index:0x0 pfn:0x84ef32 aops:xfs_address_space_operations [xfs] ino:30000b7 dentry name:"libtest.so" flags: 0x57fffe0000008027(locked|referenced|uptodate|active|writeback) raw: 57fffe0000008027 ffff80001b48bc28 ffff80001b48bc28 ffff0003f88c86a8 raw: 0000000000000000 0000000000000000 00000000ffffffff ffff0000c3e9a000 page dumped because: VM_BUG_ON_PAGE(((unsigned int) page_ref_count(page) + 127u <= 127u)) page->mem_cgroup:ffff0000c3e9a000 ------------[ cut here ]------------ kernel BUG at include/linux/mm.h:1212! Internal error: Oops - BUG: 0 [#1] SMP Modules linked in: BUG: Bad page state in process khugepaged pfn:84ef32 xfs(E) page:fffffe00201bcc80 refcount:0 mapcount:0 mapping:0 index:0x0 pfn:0x84ef32 libcrc32c(E) rfkill(E) aes_ce_blk(E) crypto_simd(E) ... CPU: 25 PID: 0 Comm: swapper/25 Kdump: loaded Tainted: ... pstate: 60400005 (nZCv daif +PAN -UAO -TCO BTYPE=--) Call trace: end_page_writeback+0x1c0/0x214 iomap_finish_page_writeback+0x13c/0x204 iomap_finish_ioend+0xe8/0x19c iomap_writepage_end_bio+0x38/0x50 bio_endio+0x168/0x1ec blk_update_request+0x278/0x3f0 blk_mq_end_request+0x34/0x15c virtblk_request_done+0x38/0x74 [virtio_blk] blk_done_softirq+0xc4/0x110 __do_softirq+0x128/0x38c __irq_exit_rcu+0x118/0x150 irq_exit+0x1c/0x30 __handle_domain_irq+0x8c/0xf0 gic_handle_irq+0x84/0x108 el1_irq+0xcc/0x180 arch_cpu_idle+0x18/0x40 default_idle_call+0x4c/0x1a0 cpuidle_idle_call+0x168/0x1e0 do_idle+0xb4/0x104 cpu_startup_entry+0x30/0x9c secondary_start_kernel+0x104/0x180 Code: d4210000 b0006161 910c8021 94013f4d (d4210000) ---[ end trace 4a88c6a074082f8c ]--- Kernel panic - not syncing: Oops - BUG: Fatal exception in interrupt
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-develUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-livepatch-5.10.82-83.359Upgrade perf-debuginfoUpgrade bpftool-debuginfoUpgrade perfUpgrade kernel-tools | May 22, 2025 | May 22, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | May 22, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 22, 2024 |
| Suse | — | Upgrade dtb-sprdUpgrade reiserfs-kmp-defaultUpgrade kselftests-kmp-defaultUpgrade kernel-default-livepatch-develUpgrade dlm-kmp-defaultUpgrade kernel-default-baseUpgrade dtb-nvidiaUpgrade kernel-rt-livepatch-develUpgrade kselftests-kmp-rtUpgrade dtb-socionextUpgrade kernel-source-vanillaUpgrade gfs2-kmp-defaultUpgrade dlm-kmp-rtUpgrade dtb-allwinnerUpgrade kernel-debug-livepatch-develUpgrade kernel-rt_debugUpgrade reiserfs-kmp-azureUpgrade cluster-md-kmp-defaultUpgrade kernel-azure-vdsoUpgrade kernel-rt-develUpgrade kernel-rt-extraUpgrade kernel-devel-rtUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-armUpgrade kernel-azureUpgrade dtb-renesasUpgrade ocfs2-kmp-azureUpgrade kernel-syms-rtUpgrade kernel-rt_debug-vdsoUpgrade reiserfs-kmp-rtUpgrade kernel-defaultUpgrade dtb-xilinxUpgrade dtb-rockchipUpgrade kernel-docsUpgrade dlm-kmp-azureUpgrade cluster-md-kmp-64kbUpgrade kernel-debug-vdsoUpgrade dtb-mediatekUpgrade kernel-obs-buildUpgrade kernel-64kb-extraUpgrade kernel-default-base-rebuildUpgrade kernel-rt-vdsoUpgrade dtb-amazonUpgrade ocfs2-kmp-64kbUpgrade dtb-appleUpgrade kernel-kvmsmallUpgrade kernel-kvmsmall-livepatch-develUpgrade dtb-qcomUpgrade dtb-freescaleUpgrade kernel-default-extraUpgrade kernel-default-optionalUpgrade kernel-debug-develUpgrade kernel-64kb-livepatch-develUpgrade gfs2-kmp-64kbUpgrade cluster-md-kmp-rtUpgrade kernel-default-develUpgrade kernel-kvmsmall-vdsoUpgrade kernel-source-rtUpgrade kernel-azure-extraUpgrade kernel-default-vdsoUpgrade ocfs2-kmp-rtUpgrade dtb-caviumUpgrade ocfs2-kmp-defaultUpgrade gfs2-kmp-azureUpgrade kernel-obs-qaUpgrade kernel-64kb-optionalUpgrade kernel-default-livepatchUpgrade kernel-develUpgrade reiserfs-kmp-64kbUpgrade kselftests-kmp-azureUpgrade kernel-64kb-develUpgrade dtb-lgUpgrade dtb-amdUpgrade kernel-docs-htmlUpgrade dtb-amlogicUpgrade kernel-azure-develUpgrade kernel-zfcpdumpUpgrade dtb-marvellUpgrade kernel-syms-azureUpgrade dtb-alteraUpgrade dtb-exynosUpgrade kernel-rtUpgrade kernel-azure-livepatch-develUpgrade kselftests-kmp-64kbUpgrade kernel-64kbUpgrade kernel-rt_debug-develUpgrade kernel-azure-optionalUpgrade kernel-kvmsmall-develUpgrade dtb-broadcomUpgrade gfs2-kmp-rtUpgrade cluster-md-kmp-azureUpgrade dtb-apmUpgrade dtb-hisiliconUpgrade kernel-rt-livepatchUpgrade kernel-symsUpgrade kernel-rt-optionalUpgrade kernel-macrosUpgrade kernel-debugUpgrade dlm-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-devel-azureUpgrade kernel-source | Aug 9, 2024 | May 22, 2024 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | May 22, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 22, 2024 |
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