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CVE-2024-57883— mm: hugetlb: independent PMD page table shared count

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mm组件存在独立PMD页表共享计数问题。

CVSS 7.8 · High EPSS 0.22% · P11

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa< 94b4b41d0cdf5cfd4d4325bc0e6e9e0d0e996133 affected
39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa< 8410996eb6fea116fe1483ed977aacf580eee7b4 affected
39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa< 02333ac1c35370517a19a4a131332a9690c6a5c7 affected
39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa< 56b274473d6e7e7375f2d0a2b4aca11d67c6b52f affected
39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa< 2e31443a0d18ae43b9d29e02bf0563f07772193d affected
39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa< 59d9094df3d79443937add8700b2ef1a866b1081 affected
2.6.20 affected
< 2.6.20 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-57883

Vulnerability Information
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Vulnerability Title
mm: hugetlb: independent PMD page table shared count
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: independent PMD page table shared count The folio refcount may be increased unexpectly through try_get_folio() by caller such as split_huge_pages. In huge_pmd_unshare(), we use refcount to check whether a pmd page table is shared. The check is incorrect if the refcount is increased by the above caller, and this can cause the page table leaked: BUG: Bad page state in process sh pfn:109324 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x66 pfn:0x109324 flags: 0x17ffff800000000(node=0|zone=2|lastcpupid=0xfffff) page_type: f2(table) raw: 017ffff800000000 0000000000000000 0000000000000000 0000000000000000 raw: 0000000000000066 0000000000000000 00000000f2000000 0000000000000000 page dumped because: nonzero mapcount ... CPU: 31 UID: 0 PID: 7515 Comm: sh Kdump: loaded Tainted: G B 6.13.0-rc2master+ #7 Tainted: [B]=BAD_PAGE Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 Call trace: show_stack+0x20/0x38 (C) dump_stack_lvl+0x80/0xf8 dump_stack+0x18/0x28 bad_page+0x8c/0x130 free_page_is_bad_report+0xa4/0xb0 free_unref_page+0x3cc/0x620 __folio_put+0xf4/0x158 split_huge_pages_all+0x1e0/0x3e8 split_huge_pages_write+0x25c/0x2d8 full_proxy_write+0x64/0xd8 vfs_write+0xcc/0x280 ksys_write+0x70/0x110 __arm64_sys_write+0x24/0x38 invoke_syscall+0x50/0x120 el0_svc_common.constprop.0+0xc8/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x34/0x128 el0t_64_sync_handler+0xc8/0xd0 el0t_64_sync+0x190/0x198 The issue may be triggered by damon, offline_page, page_idle, etc, which will increase the refcount of page table. 1. The page table itself will be discarded after reporting the "nonzero mapcount". 2. The HugeTLB page mapped by the page table miss freeing since we treat the page table as shared and a shared page table will not be unmapped. Fix it by introducing independent PMD page table shared count. As described by comment, pt_index/pt_mm/pt_frag_refcount are used for s390 gmap, x86 pgds and powerpc, pt_share_count is used for x86/arm64/riscv pmds, so we can reuse the field as pt_share_count.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mm组件存在独立PMD页表共享计数问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa ~ 94b4b41d0cdf5cfd4d4325bc0e6e9e0d0e996133 -
Linux Linux 2.6.20 -

II. Public POCs for CVE-2024-57883

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III. Intelligence Information for CVE-2024-57883

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Patches & Fixes for CVE-2024-57883 (3)

Same Patch Batch · Linux · 2025-01-15 · 32 CVEs total

CVE-2024-36476 9.8 CRITICAL RDMA/rtrs: Ensure 'ib_sge list' is accessible
CVE-2024-57882 9.8 CRITICAL mptcp: fix TCP options overflow.
CVE-2024-57802 9.4 CRITICAL netrom: check buffer length before accessing it
CVE-2025-21629 8.2 HIGH net: reenable NETIF_F_IPV6_CSUM offload for BIG TCP packets
CVE-2024-57857 7.8 HIGH RDMA/siw: Remove direct link to net_device
CVE-2024-57801 7.8 HIGH net/mlx5e: Skip restore TC rules for vport rep without loaded flag
CVE-2024-57887 7.8 HIGH drm: adv7511: Fix use-after-free in adv7533_attach_dsi()
CVE-2024-57795 7.8 HIGH RDMA/rxe: Remove the direct link to net_device
CVE-2024-39282 7.8 HIGH net: wwan: t7xx: Fix FSM command timeout issue
CVE-2024-57893 7.8 HIGH ALSA: seq: oss: Fix races at processing SysEx messages
CVE-2024-57896 7.8 HIGH btrfs: flush delalloc workers queue before stopping cleaner kthread during unmount
CVE-2024-57899 7.6 HIGH wifi: mac80211: fix mbss changed flags corruption on 32 bit systems
CVE-2024-57902 7.3 HIGH af_packet: fix vlan_get_tci() vs MSG_PEEK
CVE-2024-57901 7.3 HIGH af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK
CVE-2024-57895 7.1 HIGH ksmbd: set ATTR_CTIME flags when setting mtime
CVE-2024-57890 RDMA/uverbs: Prevent integer overflow issue
CVE-2024-57884 mm: vmscan: account for free pages to prevent infinite Loop in throttle_direct_reclaim()
CVE-2024-57844 drm/xe: Fix fault on fd close after unbind
CVE-2024-57841 net: fix memory leak in tcp_conn_request()
CVE-2024-57885 mm/kmemleak: fix sleeping function called from invalid context at print message

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-57883

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