gsd-2023-52618
Vulnerability from gsd
Modified
2024-03-07 06:01
Details
In the Linux kernel, the following vulnerability has been resolved:
block/rnbd-srv: Check for unlikely string overflow
Since "dev_search_path" can technically be as large as PATH_MAX,
there was a risk of truncation when copying it and a second string
into "full_path" since it was also PATH_MAX sized. The W=1 builds were
reporting this warning:
drivers/block/rnbd/rnbd-srv.c: In function 'process_msg_open.isra':
drivers/block/rnbd/rnbd-srv.c:616:51: warning: '%s' directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]
616 | snprintf(full_path, PATH_MAX, "%s/%s",
| ^~
In function 'rnbd_srv_get_full_path',
inlined from 'process_msg_open.isra' at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: 'snprintf' output between 2 and 4351 bytes into a destination of size 4096
616 | snprintf(full_path, PATH_MAX, "%s/%s",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
617 | dev_search_path, dev_name);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~
To fix this, unconditionally check for truncation (as was already done
for the case where "%SESSNAME%" was present).
Aliases
{
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2023-52618"
],
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock/rnbd-srv: Check for unlikely string overflow\n\nSince \"dev_search_path\" can technically be as large as PATH_MAX,\nthere was a risk of truncation when copying it and a second string\ninto \"full_path\" since it was also PATH_MAX sized. The W=1 builds were\nreporting this warning:\n\ndrivers/block/rnbd/rnbd-srv.c: In function \u0027process_msg_open.isra\u0027:\ndrivers/block/rnbd/rnbd-srv.c:616:51: warning: \u0027%s\u0027 directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]\n 616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n | ^~\nIn function \u0027rnbd_srv_get_full_path\u0027,\n inlined from \u0027process_msg_open.isra\u0027 at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: \u0027snprintf\u0027 output between 2 and 4351 bytes into a destination of size 4096\n 616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n 617 | dev_search_path, dev_name);\n | ~~~~~~~~~~~~~~~~~~~~~~~~~~\n\nTo fix this, unconditionally check for truncation (as was already done\nfor the case where \"%SESSNAME%\" was present).",
"id": "GSD-2023-52618",
"modified": "2024-03-07T06:01:45.487581Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"ID": "CVE-2023-52618",
"STATE": "PUBLIC"
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"affects": {
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"product": {
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"product_name": "Linux",
"version": {
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"version_affected": "\u003c",
"version_name": "1da177e4c3f4",
"version_value": "95bc866c1197"
},
{
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"status": "unaffected",
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"status": "unaffected",
"version": "5.15.149",
"versionType": "custom"
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{
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"status": "unaffected",
"version": "6.1.77",
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{
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"status": "unaffected",
"version": "6.6.16",
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"version": "6.7.4",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock/rnbd-srv: Check for unlikely string overflow\n\nSince \"dev_search_path\" can technically be as large as PATH_MAX,\nthere was a risk of truncation when copying it and a second string\ninto \"full_path\" since it was also PATH_MAX sized. The W=1 builds were\nreporting this warning:\n\ndrivers/block/rnbd/rnbd-srv.c: In function \u0027process_msg_open.isra\u0027:\ndrivers/block/rnbd/rnbd-srv.c:616:51: warning: \u0027%s\u0027 directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]\n 616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n | ^~\nIn function \u0027rnbd_srv_get_full_path\u0027,\n inlined from \u0027process_msg_open.isra\u0027 at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: \u0027snprintf\u0027 output between 2 and 4351 bytes into a destination of size 4096\n 616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n 617 | dev_search_path, dev_name);\n | ~~~~~~~~~~~~~~~~~~~~~~~~~~\n\nTo fix this, unconditionally check for truncation (as was already done\nfor the case where \"%SESSNAME%\" was present)."
}
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"name": "https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7"
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"name": "https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7"
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{
"name": "https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f"
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{
"name": "https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827"
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{
"name": "https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339"
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{
"name": "https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41",
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"url": "https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41"
}
]
}
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"cve": {
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock/rnbd-srv: Check for unlikely string overflow\n\nSince \"dev_search_path\" can technically be as large as PATH_MAX,\nthere was a risk of truncation when copying it and a second string\ninto \"full_path\" since it was also PATH_MAX sized. The W=1 builds were\nreporting this warning:\n\ndrivers/block/rnbd/rnbd-srv.c: In function \u0027process_msg_open.isra\u0027:\ndrivers/block/rnbd/rnbd-srv.c:616:51: warning: \u0027%s\u0027 directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]\n 616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n | ^~\nIn function \u0027rnbd_srv_get_full_path\u0027,\n inlined from \u0027process_msg_open.isra\u0027 at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: \u0027snprintf\u0027 output between 2 and 4351 bytes into a destination of size 4096\n 616 | snprintf(full_path, PATH_MAX, \"%s/%s\",\n | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n 617 | dev_search_path, dev_name);\n | ~~~~~~~~~~~~~~~~~~~~~~~~~~\n\nTo fix this, unconditionally check for truncation (as was already done\nfor the case where \"%SESSNAME%\" was present)."
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: block/rnbd-srv: Comprueba si hay un desbordamiento de cadena improbable. Dado que \"dev_search_path\" t\u00e9cnicamente puede ser tan grande como PATH_MAX, exist\u00eda el riesgo de truncamiento al copiarlo y una segunda cadena en \" full_path\" ya que tambi\u00e9n ten\u00eda un tama\u00f1o PATH_MAX. Las compilaciones W=1 informaban esta advertencia: drivers/block/rnbd/rnbd-srv.c: En funci\u00f3n \u0027process_msg_open.isra\u0027: drivers/block/rnbd/rnbd-srv.c:616:51: advertencia: \u0027% La salida de la directiva s se puede truncar escribiendo hasta 254 bytes en una regi\u00f3n de tama\u00f1o entre 0 y 4095 [-Wformat-truncation=] 616 | snprintf(full_path, PATH_MAX, \"%s/%s\", | ^~ En la funci\u00f3n \u0027rnbd_srv_get_full_path\u0027, insertada desde \u0027process_msg_open.isra\u0027 en drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block /rnbd/rnbd-srv.c:616:17: nota: \u0027snprintf\u0027 genera entre 2 y 4351 bytes en un destino de tama\u00f1o 4096 616 | snprintf(full_path, PATH_MAX, \"%s/%s\", | ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 617 | dev_search_path, dev_name); | ~~~~~~~ ~~~~~~~~~~~~~~~~~~~ Para solucionar este problema, verifique incondicionalmente el truncamiento (como ya se hizo en el caso en el que \"%SESSNAME%\" estaba presente)."
}
],
"id": "CVE-2023-52618",
"lastModified": "2024-03-18T12:38:25.490",
"metrics": {},
"published": "2024-03-18T11:15:09.110",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827"
},
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7"
},
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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