CVE-2023-53791 (GCVE-0-2023-53791)
Vulnerability from cvelistv5 – Published: 2025-12-09 00:00 – Updated: 2026-05-11 19:51
VLAI
EPSS
VEX
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
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
a1d7671910965ca9f8f0377e7e3bfd1179fba4d8 , < 99fcd427178d0f58f5520f8f01df727f8eaeb2c7
(git)
Affected: a1d7671910965ca9f8f0377e7e3bfd1179fba4d8 , < 99892147f028d711f9d40fefad4f33632593864c (git) |
guessed | |
| 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 |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/md/md.c",
"drivers/md/md.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "99fcd427178d0f58f5520f8f01df727f8eaeb2c7",
"status": "affected",
"version": "a1d7671910965ca9f8f0377e7e3bfd1179fba4d8",
"versionType": "git"
},
{
"lessThan": "99892147f028d711f9d40fefad4f33632593864c",
"status": "affected",
"version": "a1d7671910965ca9f8f0377e7e3bfd1179fba4d8",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/md/md.c",
"drivers/md/md.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"lessThan": "6.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.5.*",
"status": "unaffected",
"version": "6.5.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.6",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.5.5",
"versionStartIncluding": "6.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6",
"versionStartIncluding": "6.5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T19:51:35.874Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/99fcd427178d0f58f5520f8f01df727f8eaeb2c7"
},
{
"url": "https://git.kernel.org/stable/c/99892147f028d711f9d40fefad4f33632593864c"
}
],
"title": "md: fix warning for holder mismatch from export_rdev()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"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"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2023-53791",
"date": "2026-10-01",
"epss": "0.00185",
"percentile": "0.07261"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/md/md.c",
"drivers/md/md.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "99fcd427178d0f58f5520f8f01df727f8eaeb2c7",
"status": "affected",
"version": "a1d7671910965ca9f8f0377e7e3bfd1179fba4d8",
"versionType": "git"
},
{
"lessThan": "99892147f028d711f9d40fefad4f33632593864c",
"status": "affected",
"version": "a1d7671910965ca9f8f0377e7e3bfd1179fba4d8",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/md/md.c",
"drivers/md/md.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"lessThan": "6.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.5.*",
"status": "unaffected",
"version": "6.5.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.6",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"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."
}
],
"id": "CVE-2023-53791",
"lastModified": "2026-06-17T06:46:04.800",
"metrics": {},
"published": "2025-12-09T01:16:50.570",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/99892147f028d711f9d40fefad4f33632593864c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/99fcd427178d0f58f5520f8f01df727f8eaeb2c7"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"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"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- 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.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- 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.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…