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CVE-2023-53791 (GCVE-0-2023-53791)

Vulnerability from cvelistv5 – Published: 2025-12-09 00:00 – Updated: 2026-05-11 19:51
VLAI
Title
md: fix warning for holder mismatch from export_rdev()
Summary
In the Linux kernel, the following vulnerability has been resolved: md: fix warning for holder mismatch from export_rdev() Commit a1d767191096 ("md: use mddev->external to select holder in export_rdev()") fix the problem that 'claim_rdev' is used for blkdev_get_by_dev() while 'rdev' is used for blkdev_put(). However, if mddev->external is changed from 0 to 1, then 'rdev' is used for blkdev_get_by_dev() while 'claim_rdev' is used for blkdev_put(). And this problem can be reporduced reliably by following: New file: mdadm/tests/23rdev-lifetime devname=${dev0##*/} devt=`cat /sys/block/$devname/dev` pid="" runtime=2 clean_up_test() { pill -9 $pid echo clear > /sys/block/md0/md/array_state } trap 'clean_up_test' EXIT add_by_sysfs() { while true; do echo $devt > /sys/block/md0/md/new_dev done } remove_by_sysfs(){ while true; do echo remove > /sys/block/md0/md/dev-${devname}/state done } echo md0 > /sys/module/md_mod/parameters/new_array || die "create md0 failed" add_by_sysfs & pid="$pid $!" remove_by_sysfs & pid="$pid $!" sleep $runtime exit 0 Test cmd: ./test --save-logs --logdir=/tmp/ --keep-going --dev=loop --tests=23rdev-lifetime Test result: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 960 at block/bdev.c:618 blkdev_put+0x27c/0x330 Modules linked in: multipath md_mod loop CPU: 0 PID: 960 Comm: test Not tainted 6.5.0-rc2-00121-g01e55c376936-dirty #50 RIP: 0010:blkdev_put+0x27c/0x330 Call Trace: <TASK> export_rdev.isra.23+0x50/0xa0 [md_mod] mddev_unlock+0x19d/0x300 [md_mod] rdev_attr_store+0xec/0x190 [md_mod] sysfs_kf_write+0x52/0x70 kernfs_fop_write_iter+0x19a/0x2a0 vfs_write+0x3b5/0x770 ksys_write+0x74/0x150 __x64_sys_write+0x22/0x30 do_syscall_64+0x40/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd Fix the problem by recording if 'rdev' is used as holder.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a1d7671910965ca9f8f0377e7e3bfd1179fba4d8 , < 99fcd427178d0f58f5520f8f01df727f8eaeb2c7 (git)
Affected: a1d7671910965ca9f8f0377e7e3bfd1179fba4d8 , < 99892147f028d711f9d40fefad4f33632593864c (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.5.5 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/md.c",
            "drivers/md/md.h"
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          "vendor": "Linux",
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: fix warning for holder mismatch from export_rdev()\n\nCommit a1d767191096 (\"md: use mddev-\u003eexternal to select holder in\nexport_rdev()\") fix the problem that \u0027claim_rdev\u0027 is used for\nblkdev_get_by_dev() while \u0027rdev\u0027 is used for blkdev_put().\n\nHowever, if mddev-\u003eexternal is changed from 0 to 1, then \u0027rdev\u0027 is used\nfor blkdev_get_by_dev() while \u0027claim_rdev\u0027 is used for blkdev_put(). And\nthis problem can be reporduced reliably by following:\n\nNew file: mdadm/tests/23rdev-lifetime\n\ndevname=${dev0##*/}\ndevt=`cat /sys/block/$devname/dev`\npid=\"\"\nruntime=2\n\nclean_up_test() {\n        pill -9 $pid\n        echo clear \u003e /sys/block/md0/md/array_state\n}\n\ntrap \u0027clean_up_test\u0027 EXIT\n\nadd_by_sysfs() {\n        while true; do\n                echo $devt \u003e /sys/block/md0/md/new_dev\n        done\n}\n\nremove_by_sysfs(){\n        while true; do\n                echo remove \u003e /sys/block/md0/md/dev-${devname}/state\n        done\n}\n\necho md0 \u003e /sys/module/md_mod/parameters/new_array || die \"create md0 failed\"\n\nadd_by_sysfs \u0026\npid=\"$pid $!\"\n\nremove_by_sysfs \u0026\npid=\"$pid $!\"\n\nsleep $runtime\nexit 0\n\nTest cmd:\n\n./test --save-logs --logdir=/tmp/ --keep-going --dev=loop --tests=23rdev-lifetime\n\nTest result:\n\n------------[ cut here ]------------\nWARNING: CPU: 0 PID: 960 at block/bdev.c:618 blkdev_put+0x27c/0x330\nModules linked in: multipath md_mod loop\nCPU: 0 PID: 960 Comm: test Not tainted 6.5.0-rc2-00121-g01e55c376936-dirty #50\nRIP: 0010:blkdev_put+0x27c/0x330\nCall Trace:\n \u003cTASK\u003e\n export_rdev.isra.23+0x50/0xa0 [md_mod]\n mddev_unlock+0x19d/0x300 [md_mod]\n rdev_attr_store+0xec/0x190 [md_mod]\n sysfs_kf_write+0x52/0x70\n kernfs_fop_write_iter+0x19a/0x2a0\n vfs_write+0x3b5/0x770\n ksys_write+0x74/0x150\n __x64_sys_write+0x22/0x30\n do_syscall_64+0x40/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nFix the problem by recording if \u0027rdev\u0027 is used as holder."
        }
      ],
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        "dateUpdated": "2026-05-11T19:51:35.874Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/99fcd427178d0f58f5520f8f01df727f8eaeb2c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/99892147f028d711f9d40fefad4f33632593864c"
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      ],
      "title": "md: fix warning for holder mismatch from export_rdev()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53791",
    "datePublished": "2025-12-09T00:00:48.301Z",
    "dateReserved": "2025-12-08T23:58:35.274Z",
    "dateUpdated": "2026-05-11T19:51:35.874Z",
    "state": "PUBLISHED"
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    "epss": {
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      "date": "2026-09-15",
      "epss": "0.00185",
      "percentile": "0.0825"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53791\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-09T01:16:50.570\",\"lastModified\":\"2026-06-17T06:46:04.800\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmd: fix warning for holder mismatch from export_rdev()\\n\\nCommit a1d767191096 (\\\"md: use mddev-\u003eexternal to select holder in\\nexport_rdev()\\\") fix the problem that \u0027claim_rdev\u0027 is used for\\nblkdev_get_by_dev() while \u0027rdev\u0027 is used for blkdev_put().\\n\\nHowever, if mddev-\u003eexternal is changed from 0 to 1, then \u0027rdev\u0027 is used\\nfor blkdev_get_by_dev() while \u0027claim_rdev\u0027 is used for blkdev_put(). And\\nthis problem can be reporduced reliably by following:\\n\\nNew file: mdadm/tests/23rdev-lifetime\\n\\ndevname=${dev0##*/}\\ndevt=`cat /sys/block/$devname/dev`\\npid=\\\"\\\"\\nruntime=2\\n\\nclean_up_test() {\\n        pill -9 $pid\\n        echo clear \u003e /sys/block/md0/md/array_state\\n}\\n\\ntrap \u0027clean_up_test\u0027 EXIT\\n\\nadd_by_sysfs() {\\n        while true; do\\n                echo $devt \u003e /sys/block/md0/md/new_dev\\n        done\\n}\\n\\nremove_by_sysfs(){\\n        while true; do\\n                echo remove \u003e /sys/block/md0/md/dev-${devname}/state\\n        done\\n}\\n\\necho md0 \u003e /sys/module/md_mod/parameters/new_array || die \\\"create md0 failed\\\"\\n\\nadd_by_sysfs \u0026\\npid=\\\"$pid $!\\\"\\n\\nremove_by_sysfs \u0026\\npid=\\\"$pid $!\\\"\\n\\nsleep $runtime\\nexit 0\\n\\nTest cmd:\\n\\n./test --save-logs --logdir=/tmp/ --keep-going --dev=loop --tests=23rdev-lifetime\\n\\nTest result:\\n\\n------------[ cut here ]------------\\nWARNING: CPU: 0 PID: 960 at block/bdev.c:618 blkdev_put+0x27c/0x330\\nModules linked in: multipath md_mod loop\\nCPU: 0 PID: 960 Comm: test Not tainted 6.5.0-rc2-00121-g01e55c376936-dirty #50\\nRIP: 0010:blkdev_put+0x27c/0x330\\nCall Trace:\\n \u003cTASK\u003e\\n export_rdev.isra.23+0x50/0xa0 [md_mod]\\n mddev_unlock+0x19d/0x300 [md_mod]\\n rdev_attr_store+0xec/0x190 [md_mod]\\n sysfs_kf_write+0x52/0x70\\n kernfs_fop_write_iter+0x19a/0x2a0\\n vfs_write+0x3b5/0x770\\n ksys_write+0x74/0x150\\n __x64_sys_write+0x22/0x30\\n do_syscall_64+0x40/0x90\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nFix the problem by recording if \u0027rdev\u0027 is used as holder.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/md/md.c\",\"drivers/md/md.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a1d7671910965ca9f8f0377e7e3bfd1179fba4d8\",\"lessThan\":\"99fcd427178d0f58f5520f8f01df727f8eaeb2c7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a1d7671910965ca9f8f0377e7e3bfd1179fba4d8\",\"lessThan\":\"99892147f028d711f9d40fefad4f33632593864c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/md/md.c\",\"drivers/md/md.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.5\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.5\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5.5\",\"lessThanOrEqual\":\"6.5.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/99892147f028d711f9d40fefad4f33632593864c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/99fcd427178d0f58f5520f8f01df727f8eaeb2c7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:22:48+00:00",
      "cve": "CVE-2023-53791",
      "id": "CVE-2023-53791",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "279",
      "product_status:known_affected": "36",
      "product_status:known_not_affected": "152",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: md: fix warning for holder mismatch from export_rdev()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53791.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-05T00:47:41Z",
      "cve": "CVE-2023-53791",
      "id": "CVE-2023-53791",
      "initial_release_date": "2025-12-10T00:36:20Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "432",
      "product_status:recommended": "241",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53791",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53791.json",
      "version": "34"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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