cve-2023-52906
Vulnerability from cvelistv5
Published
2024-08-21 06:10
Modified
2024-11-04 14:54
Severity ?
EPSS score ?
Summary
net/sched: act_mpls: Fix warning during failed attribute validation
References
Impacted products
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"id": "CVE-2023-52906",
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"role": "CISA Coordinator",
"timestamp": "2024-09-10T16:03:11.641593Z",
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"cna": {
"affected": [
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"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/sched/act_mpls.c"
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"status": "unaffected",
"version": "0",
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"version": "5.10.164",
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"status": "unaffected",
"version": "5.15.89",
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"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.7",
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_mpls: Fix warning during failed attribute validation\n\nThe \u0027TCA_MPLS_LABEL\u0027 attribute is of \u0027NLA_U32\u0027 type, but has a\nvalidation type of \u0027NLA_VALIDATE_FUNCTION\u0027. This is an invalid\ncombination according to the comment above \u0027struct nla_policy\u0027:\n\n\"\nMeaning of `validate\u0027 field, use via NLA_POLICY_VALIDATE_FN:\n NLA_BINARY Validation function called for the attribute.\n All other Unused - but note that it\u0027s a union\n\"\n\nThis can trigger the warning [1] in nla_get_range_unsigned() when\nvalidation of the attribute fails. Despite being of \u0027NLA_U32\u0027 type, the\nassociated \u0027min\u0027/\u0027max\u0027 fields in the policy are negative as they are\naliased by the \u0027validate\u0027 field.\n\nFix by changing the attribute type to \u0027NLA_BINARY\u0027 which is consistent\nwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().\nAs a result, move the length validation to the validation function.\n\nNo regressions in MPLS tests:\n\n # ./tdc.py -f tc-tests/actions/mpls.json\n [...]\n # echo $?\n 0\n\n[1]\nWARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118\nnla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117\nModules linked in:\nCPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014\nRIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117\n[...]\nCall Trace:\n \u003cTASK\u003e\n __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310\n netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411\n netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline]\n netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506\n netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546\n rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345\n netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921\n sock_sendmsg_nosec net/socket.c:714 [inline]\n sock_sendmsg net/socket.c:734 [inline]\n ____sys_sendmsg+0x38f/0x500 net/socket.c:2482\n ___sys_sendmsg net/socket.c:2536 [inline]\n __sys_sendmsg+0x197/0x230 net/socket.c:2565\n __do_sys_sendmsg net/socket.c:2574 [inline]\n __se_sys_sendmsg net/socket.c:2572 [inline]\n __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd"
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"dateUpdated": "2024-11-04T14:54:57.643Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
{
"url": "https://git.kernel.org/stable/c/2b157c3c5d6b8ddca48d53c9e662032f65af8d61"
},
{
"url": "https://git.kernel.org/stable/c/453277feb41c2235cf2c0de9209eef962c401457"
},
{
"url": "https://git.kernel.org/stable/c/9e2c38827cdc6fdd3bb375c8607fc04d289756f9"
},
{
"url": "https://git.kernel.org/stable/c/8a97b544b98e44f596219ebb290fd2ba2fd5d644"
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{
"url": "https://git.kernel.org/stable/c/9e17f99220d111ea031b44153fdfe364b0024ff2"
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],
"title": "net/sched: act_mpls: Fix warning during failed attribute validation",
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-52906",
"datePublished": "2024-08-21T06:10:47.121Z",
"dateReserved": "2024-08-21T06:07:11.015Z",
"dateUpdated": "2024-11-04T14:54:57.643Z",
"state": "PUBLISHED"
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"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2023-52906\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-21T07:15:06.663\",\"lastModified\":\"2024-09-13T13:21:31.360\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: act_mpls: Fix warning during failed attribute validation\\n\\nThe \u0027TCA_MPLS_LABEL\u0027 attribute is of \u0027NLA_U32\u0027 type, but has a\\nvalidation type of \u0027NLA_VALIDATE_FUNCTION\u0027. This is an invalid\\ncombination according to the comment above \u0027struct nla_policy\u0027:\\n\\n\\\"\\nMeaning of `validate\u0027 field, use via NLA_POLICY_VALIDATE_FN:\\n NLA_BINARY Validation function called for the attribute.\\n All other Unused - but note that it\u0027s a union\\n\\\"\\n\\nThis can trigger the warning [1] in nla_get_range_unsigned() when\\nvalidation of the attribute fails. Despite being of \u0027NLA_U32\u0027 type, the\\nassociated \u0027min\u0027/\u0027max\u0027 fields in the policy are negative as they are\\naliased by the \u0027validate\u0027 field.\\n\\nFix by changing the attribute type to \u0027NLA_BINARY\u0027 which is consistent\\nwith the above comment and all other users of NLA_POLICY_VALIDATE_FN().\\nAs a result, move the length validation to the validation function.\\n\\nNo regressions in MPLS tests:\\n\\n # ./tdc.py -f tc-tests/actions/mpls.json\\n [...]\\n # echo $?\\n 0\\n\\n[1]\\nWARNING: CPU: 0 PID: 17743 at lib/nlattr.c:118\\nnla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117\\nModules linked in:\\nCPU: 0 PID: 17743 Comm: syz-executor.0 Not tainted 6.1.0-rc8 #3\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\\nrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014\\nRIP: 0010:nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117\\n[...]\\nCall Trace:\\n \u003cTASK\u003e\\n __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310\\n netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411\\n netlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline]\\n netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506\\n netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546\\n rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:714 [inline]\\n sock_sendmsg net/socket.c:734 [inline]\\n ____sys_sendmsg+0x38f/0x500 net/socket.c:2482\\n ___sys_sendmsg net/socket.c:2536 [inline]\\n __sys_sendmsg+0x197/0x230 net/socket.c:2565\\n __do_sys_sendmsg net/socket.c:2574 [inline]\\n __se_sys_sendmsg net/socket.c:2572 [inline]\\n __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/sched: act_mpls: Advertencia de correcci\u00f3n durante la validaci\u00f3n fallida del atributo El atributo \u0027TCA_MPLS_LABEL\u0027 es de tipo \u0027NLA_U32\u0027, pero tiene un tipo de validaci\u00f3n de \u0027NLA_VALIDATE_FUNCTION\u0027. Esta es una combinaci\u00f3n no v\u00e1lida seg\u00fan el comentario anterior \u0027struct nla_policy\u0027: \\\" Significado del campo `validar\u0027, util\u00edcelo a trav\u00e9s de NLA_POLICY_VALIDATE_FN: NLA_BINARY Funci\u00f3n de validaci\u00f3n llamada para el atributo. Todos los dem\u00e1s no utilizados, pero tenga en cuenta que es una uni\u00f3n \\\" Esto puede desencadenar la advertencia [1] en nla_get_range_unsigned() cuando falla la validaci\u00f3n del atributo. A pesar de ser del tipo \u0027NLA_U32\u0027, los campos \u0027min\u0027/\u0027max\u0027 asociados en la pol\u00edtica son negativos ya que tienen un alias del campo \u0027validate\u0027. Para solucionarlo, cambie el tipo de atributo a \u0027NLA_BINARY\u0027, que es coherente con el comentario anterior y con todos los dem\u00e1s usuarios de NLA_POLICY_VALIDATE_FN(). Como resultado, mueva la validaci\u00f3n de longitud a la funci\u00f3n de validaci\u00f3n. No hay regresiones en las pruebas MPLS: # ./tdc.py -f tc-tests/actions/mpls.json [...] # echo $? 0 [1] ADVERTENCIA: CPU: 0 PID: 17743 en lib/nlattr.c:118 nla_get_range_unsigned+0x1d8/0x1e0 lib/nlattr.c:117 M\u00f3dulos vinculados en: CPU: 0 PID: 17743 Comm: syz-executor.0 No tainted 6.1.0-rc8 #3 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS rel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 01/04/2014 RIP: 0010:nla_get_range_unsigned+0x1d8 /0x1e0 lib/nlattr.c:117 [...] Seguimiento de llamadas: __netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310 netlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411 netlink_ack_tlv_fill net /netlink/af_netlink.c:2454 [en l\u00ednea] netlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506 netlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546 rtnetlink_rcv+0x18/0x20 net/core/rtnetlink. c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [en l\u00ednea] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c :714 [en l\u00ednea] sock_sendmsg net/socket.c:734 [en l\u00ednea] ____sys_sendmsg+0x38f/0x500 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [en l\u00ednea] __sys_sendmsg+0x197/0x230 net/socket.c: 2565 __do_sys_sendmsg net/socket.c:2574 [en l\u00ednea] __se_sys_sendmsg net/socket.c:2572 [en l\u00ednea] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x63/0xcd\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.3\",\"versionEndExcluding\":\"5.4.229\",\"matchCriteriaId\":\"6B9D0314-C8F6-4538-867F-2873DF2287F2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.164\",\"matchCriteriaId\":\"CA742E66-32D2-459E-AB19-171C4DB3B1F4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.89\",\"matchCriteriaId\":\"E706841F-E788-4316-9B05-DA8EB60CE6B3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.7\",\"matchCriteriaId\":\"9275C81F-AE96-4CDB-AD20-7DBD36E5D909\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FF501633-2F44-4913-A8EE-B021929F49F6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"2BDA597B-CAC1-4DF0-86F0-42E142C654E9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"725C78C9-12CE-406F-ABE8-0813A01D66E8\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2b157c3c5d6b8ddca48d53c9e662032f65af8d61\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/453277feb41c2235cf2c0de9209eef962c401457\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8a97b544b98e44f596219ebb290fd2ba2fd5d644\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9e17f99220d111ea031b44153fdfe364b0024ff2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9e2c38827cdc6fdd3bb375c8607fc04d289756f9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.