{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-52906", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-21T06:07:11.015Z", "datePublished": "2024-08-21T06:10:47.121Z", "dateUpdated": "2024-09-12T17:33:13.683Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-08-21T06:10:47.121Z"}, "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 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has a\nvalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalid\ncombination according to the comment above 'struct nla_policy':\n\n\"\nMeaning of `validate' field, use via NLA_POLICY_VALIDATE_FN:\n NLA_BINARY Validation function called for the attribute.\n All other Unused - but note that it's a union\n\"\n\nThis can trigger the warning [1] in nla_get_range_unsigned() when\nvalidation of the attribute fails. Despite being of 'NLA_U32' type, the\nassociated 'min'/'max' fields in the policy are negative as they are\naliased by the 'validate' field.\n\nFix by changing the attribute type to 'NLA_BINARY' 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 <TASK>\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"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/act_mpls.c"], "versions": [{"version": "2a2ea50870ba", "lessThan": "2b157c3c5d6b", "status": "affected", "versionType": "git"}, {"version": "2a2ea50870ba", "lessThan": "453277feb41c", "status": "affected", "versionType": "git"}, {"version": "2a2ea50870ba", "lessThan": "9e2c38827cdc", "status": "affected", "versionType": "git"}, {"version": "2a2ea50870ba", "lessThan": "8a97b544b98e", "status": "affected", "versionType": "git"}, {"version": "2a2ea50870ba", "lessThan": "9e17f99220d1", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/act_mpls.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "custom"}, {"version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom"}, {"version": "5.10.164", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom"}, {"version": "5.15.89", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.1.7", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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"}, {"url": "https://git.kernel.org/stable/c/9e17f99220d111ea031b44153fdfe364b0024ff2"}], "title": "net/sched: act_mpls: Fix warning during failed attribute validation", "x_generator": {"engine": "bippy-c9c4e1df01b2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52906", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:03:11.641593Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:13.683Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52906", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:03:11.641593Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:18.240Z"}}], "cna": {"title": "net/sched: act_mpls: Fix warning during failed attribute validation", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2a2ea50870ba", "lessThan": "2b157c3c5d6b", "versionType": "git"}, {"status": "affected", "version": "2a2ea50870ba", "lessThan": "453277feb41c", "versionType": "git"}, {"status": "affected", "version": "2a2ea50870ba", "lessThan": "9e2c38827cdc", "versionType": "git"}, {"status": "affected", "version": "2a2ea50870ba", "lessThan": "8a97b544b98e", "versionType": "git"}, {"status": "affected", "version": "2a2ea50870ba", "lessThan": "9e17f99220d1", "versionType": "git"}], "programFiles": ["net/sched/act_mpls.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"status": "unaffected", "version": "0", "lessThan": "5.3", "versionType": "custom"}, {"status": "unaffected", "version": "5.4.229", "versionType": "custom", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.164", "versionType": "custom", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.89", "versionType": "custom", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.7", "versionType": "custom", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/sched/act_mpls.c"], "defaultStatus": "affected"}], "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"}, {"url": "https://git.kernel.org/stable/c/9e17f99220d111ea031b44153fdfe364b0024ff2"}], "x_generator": {"engine": "bippy-c9c4e1df01b2"}, "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 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has a\nvalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalid\ncombination according to the comment above 'struct nla_policy':\n\n\"\nMeaning of `validate' field, use via NLA_POLICY_VALIDATE_FN:\n NLA_BINARY Validation function called for the attribute.\n All other Unused - but note that it's a union\n\"\n\nThis can trigger the warning [1] in nla_get_range_unsigned() when\nvalidation of the attribute fails. Despite being of 'NLA_U32' type, the\nassociated 'min'/'max' fields in the policy are negative as they are\naliased by the 'validate' field.\n\nFix by changing the attribute type to 'NLA_BINARY' 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 <TASK>\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"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-08-21T06:10:47.121Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52906", "state": "PUBLISHED", "dateUpdated": "2024-09-12T17:33:13.683Z", "dateReserved": "2024-08-21T06:07:11.015Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-08-21T06:10:47.121Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6B9D0314-C8F6-4538-867F-2873DF2287F2", "versionEndExcluding": "5.4.229", "versionStartIncluding": "5.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CA742E66-32D2-459E-AB19-171C4DB3B1F4", "versionEndExcluding": "5.10.164", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E706841F-E788-4316-9B05-DA8EB60CE6B3", "versionEndExcluding": "5.15.89", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9275C81F-AE96-4CDB-AD20-7DBD36E5D909", "versionEndExcluding": "6.1.7", "versionStartIncluding": "5.16", "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", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has a\nvalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalid\ncombination according to the comment above 'struct nla_policy':\n\n\"\nMeaning of `validate' field, use via NLA_POLICY_VALIDATE_FN:\n NLA_BINARY Validation function called for the attribute.\n All other Unused - but note that it's a union\n\"\n\nThis can trigger the warning [1] in nla_get_range_unsigned() when\nvalidation of the attribute fails. Despite being of 'NLA_U32' type, the\nassociated 'min'/'max' fields in the policy are negative as they are\naliased by the 'validate' field.\n\nFix by changing the attribute type to 'NLA_BINARY' 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 <TASK>\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 'TCA_MPLS_LABEL' es de tipo 'NLA_U32', pero tiene un tipo de validaci\u00f3n de 'NLA_VALIDATE_FUNCTION'. Esta es una combinaci\u00f3n no v\u00e1lida seg\u00fan el comentario anterior 'struct nla_policy': \" Significado del campo `validar', 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 'NLA_U32', los campos 'min'/'max' asociados en la pol\u00edtica son negativos ya que tienen un alias del campo 'validate'. Para solucionarlo, cambie el tipo de atributo a 'NLA_BINARY', 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"}], "id": "CVE-2023-52906", "lastModified": "2024-09-13T13:21:31.360", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-08-21T07:15:06.663", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net/sched: act_mpls: Fix warning during failed attribute validation", "id": "2306434", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2306434"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/sched: act_mpls: Fix warning during failed attribute validation\nThe 'TCA_MPLS_LABEL' attribute is of 'NLA_U32' type, but has a\nvalidation type of 'NLA_VALIDATE_FUNCTION'. This is an invalid\ncombination according to the comment above 'struct nla_policy':\n\"\nMeaning of `validate' field, use via NLA_POLICY_VALIDATE_FN:\nNLA_BINARY Validation function called for the attribute.\nAll other Unused - but note that it's a union\n\"\nThis can trigger the warning [1] in nla_get_range_unsigned() when\nvalidation of the attribute fails. Despite being of 'NLA_U32' type, the\nassociated 'min'/'max' fields in the policy are negative as they are\naliased by the 'validate' field.\nFix by changing the attribute type to 'NLA_BINARY' 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.\nNo regressions in MPLS tests:\n# ./tdc.py -f tc-tests/actions/mpls.json\n[...]\n# echo $?\n0\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<TASK>\n__netlink_policy_dump_write_attr+0x23d/0x990 net/netlink/policy.c:310\nnetlink_policy_dump_write_attr+0x22/0x30 net/netlink/policy.c:411\nnetlink_ack_tlv_fill net/netlink/af_netlink.c:2454 [inline]\nnetlink_ack+0x546/0x760 net/netlink/af_netlink.c:2506\nnetlink_rcv_skb+0x1b7/0x240 net/netlink/af_netlink.c:2546\nrtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:6109\nnetlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\nnetlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1345\nnetlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1921\nsock_sendmsg_nosec net/socket.c:714 [inline]\nsock_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\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd", "A flaw was found in the Linux Kernel. The 'TCA_MPLS_LABEL' attribute is of the 'NLA_U32' type, but has a validation type of 'NLA_VALIDATE_FUNCTION'. This is an invalid combination according to 'struct nla_policy', which can trigger the nla_get_range_unsigned() warning when validation of the attribute fails. Despite being 'NLA_U32' type, the associated 'min'/'max' fields in the policy are negative as they are aliased by the 'validate' field. To mitigate, change the attribute type to 'NLA_BINARY', and move the length validation to the validation function."], "name": "CVE-2023-52906", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-08-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52906\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52906\nhttps://lore.kernel.org/linux-cve-announce/2024082114-CVE-2023-52906-7967@gregkh/T"], "threat_severity": "Moderate"}