CVE-2023-52596 (GCVE-0-2023-52596)
Vulnerability from cvelistv5 – Published: 2024-03-06 06:45 – Updated: 2026-01-05 10:16
VLAI?
Title
sysctl: Fix out of bounds access for empty sysctl registers
Summary
In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix out of bounds access for empty sysctl registers
When registering tables to the sysctl subsystem there is a check to see
if header is a permanently empty directory (used for mounts). This check
evaluates the first element of the ctl_table. This results in an out of
bounds evaluation when registering empty directories.
The function register_sysctl_mount_point now passes a ctl_table of size
1 instead of size 0. It now relies solely on the type to identify
a permanently empty register.
Make sure that the ctl_table has at least one element before testing for
permanent emptiness.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c , < 15893975e9e382f8294ea8d926f08dc2d8d39ede
(git)
Affected: 9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c , < 2ae7081bc10123b187e36a4f3a8e53768de31489 (git) Affected: 9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c , < 315552310c7de92baea4e570967066569937a843 (git) |
||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-52596",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-03-06T15:39:37.053752Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-06-04T17:22:38.702Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-02T23:03:21.269Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39ede"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/proc/proc_sysctl.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "15893975e9e382f8294ea8d926f08dc2d8d39ede",
"status": "affected",
"version": "9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c",
"versionType": "git"
},
{
"lessThan": "2ae7081bc10123b187e36a4f3a8e53768de31489",
"status": "affected",
"version": "9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c",
"versionType": "git"
},
{
"lessThan": "315552310c7de92baea4e570967066569937a843",
"status": "affected",
"version": "9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/proc/proc_sysctl.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"lessThan": "6.6",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.16",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.7.*",
"status": "unaffected",
"version": "6.7.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.8",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.16",
"versionStartIncluding": "6.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.7.4",
"versionStartIncluding": "6.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.8",
"versionStartIncluding": "6.6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsysctl: Fix out of bounds access for empty sysctl registers\n\nWhen registering tables to the sysctl subsystem there is a check to see\nif header is a permanently empty directory (used for mounts). This check\nevaluates the first element of the ctl_table. This results in an out of\nbounds evaluation when registering empty directories.\n\nThe function register_sysctl_mount_point now passes a ctl_table of size\n1 instead of size 0. It now relies solely on the type to identify\na permanently empty register.\n\nMake sure that the ctl_table has at least one element before testing for\npermanent emptiness."
}
],
"providerMetadata": {
"dateUpdated": "2026-01-05T10:16:28.158Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39ede"
},
{
"url": "https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489"
},
{
"url": "https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843"
}
],
"title": "sysctl: Fix out of bounds access for empty sysctl registers",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-52596",
"datePublished": "2024-03-06T06:45:26.094Z",
"dateReserved": "2024-03-02T21:55:42.571Z",
"dateUpdated": "2026-01-05T10:16:28.158Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39ede\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T23:03:21.269Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52596\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-06T15:39:37.053752Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:11.807Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"sysctl: Fix out of bounds access for empty sysctl registers\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c\", \"lessThan\": \"15893975e9e382f8294ea8d926f08dc2d8d39ede\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c\", \"lessThan\": \"2ae7081bc10123b187e36a4f3a8e53768de31489\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c\", \"lessThan\": \"315552310c7de92baea4e570967066569937a843\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/proc/proc_sysctl.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.16\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/proc/proc_sysctl.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39ede\"}, {\"url\": \"https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489\"}, {\"url\": \"https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsysctl: Fix out of bounds access for empty sysctl registers\\n\\nWhen registering tables to the sysctl subsystem there is a check to see\\nif header is a permanently empty directory (used for mounts). This check\\nevaluates the first element of the ctl_table. This results in an out of\\nbounds evaluation when registering empty directories.\\n\\nThe function register_sysctl_mount_point now passes a ctl_table of size\\n1 instead of size 0. It now relies solely on the type to identify\\na permanently empty register.\\n\\nMake sure that the ctl_table has at least one element before testing for\\npermanent emptiness.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.16\", \"versionStartIncluding\": \"6.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.4\", \"versionStartIncluding\": \"6.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"6.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:16:28.158Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-52596\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:16:28.158Z\", \"dateReserved\": \"2024-03-02T21:55:42.571Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-06T06:45:26.094Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
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…