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mm: hugetlb: independent PMD page table shared count

Type: advisorySource: Official CVE List1 source record

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

Announced Source revision 1
Original source ↗

CVE-2024-57883

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2024-57883

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
        "lessThan": "94b4b41d0cdf5cfd4d4325bc0e6e9e0d0e996133",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
        "lessThan": "8410996eb6fea116fe1483ed977aacf580eee7b4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
        "lessThan": "02333ac1c35370517a19a4a131332a9690c6a5c7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
        "lessThan": "56b274473d6e7e7375f2d0a2b4aca11d67c6b52f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
        "lessThan": "2e31443a0d18ae43b9d29e02bf0563f07772193d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "39dde65c9940c97fcd178a3d2b1c57ed8b7b68aa",
        "lessThan": "59d9094df3d79443937add8700b2ef1a866b1081",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "include/linux/mm.h",
      "include/linux/mm_types.h",
      "mm/hugetlb.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.20"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.20",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.239",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.186",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.142",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.72",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.9",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.13",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "include/linux/mm.h",
      "include/linux/mm_types.h",
      "mm/hugetlb.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-57883

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30409 · Revision 1
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Publisher date
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