{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-40957", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.593Z", "datePublished": "2024-07-12T12:31:59.747Z", "dateUpdated": "2024-09-11T17:34:24.035Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:52:11.461Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nseg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors\n\ninput_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for\nPREROUTING hook, in PREROUTING hook, we should passing a valid indev,\nand a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer\ndereference, as below:\n\n [74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090\n [74830.655633] #PF: supervisor read access in kernel mode\n [74830.657888] #PF: error_code(0x0000) - not-present page\n [74830.659500] PGD 0 P4D 0\n [74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI\n ...\n [74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011\n [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n ...\n [74830.689725] Call Trace:\n [74830.690402] <IRQ>\n [74830.690953] ? show_trace_log_lvl+0x1c4/0x2df\n [74830.692020] ? show_trace_log_lvl+0x1c4/0x2df\n [74830.693095] ? ipt_do_table+0x286/0x710 [ip_tables]\n [74830.694275] ? __die_body.cold+0x8/0xd\n [74830.695205] ? page_fault_oops+0xac/0x140\n [74830.696244] ? exc_page_fault+0x62/0x150\n [74830.697225] ? asm_exc_page_fault+0x22/0x30\n [74830.698344] ? rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n [74830.699540] ipt_do_table+0x286/0x710 [ip_tables]\n [74830.700758] ? ip6_route_input+0x19d/0x240\n [74830.701752] nf_hook_slow+0x3f/0xb0\n [74830.702678] input_action_end_dx4+0x19b/0x1e0\n [74830.703735] ? input_action_end_t+0xe0/0xe0\n [74830.704734] seg6_local_input_core+0x2d/0x60\n [74830.705782] lwtunnel_input+0x5b/0xb0\n [74830.706690] __netif_receive_skb_one_core+0x63/0xa0\n [74830.707825] process_backlog+0x99/0x140\n [74830.709538] __napi_poll+0x2c/0x160\n [74830.710673] net_rx_action+0x296/0x350\n [74830.711860] __do_softirq+0xcb/0x2ac\n [74830.713049] do_softirq+0x63/0x90\n\ninput_action_end_dx4() passing a NULL indev to NF_HOOK(), and finally\ntrigger a NULL dereference in rpfilter_mt()->rpfilter_is_loopback():\n\n static bool\n rpfilter_is_loopback(const struct sk_buff *skb,\n \t const struct net_device *in)\n {\n // in is NULL\n return skb->pkt_type == PACKET_LOOPBACK ||\n \t in->flags & IFF_LOOPBACK;\n }"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/seg6_local.c"], "versions": [{"version": "7a3f5b0de364", "lessThan": "af90e3d73dc4", "status": "affected", "versionType": "git"}, {"version": "7a3f5b0de364", "lessThan": "ec4d970b597e", "status": "affected", "versionType": "git"}, {"version": "7a3f5b0de364", "lessThan": "d62df86c1720", "status": "affected", "versionType": "git"}, {"version": "7a3f5b0de364", "lessThan": "561475d53aa7", "status": "affected", "versionType": "git"}, {"version": "7a3f5b0de364", "lessThan": "9a3bc8d16e0a", "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/ipv6/seg6_local.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "custom"}, {"version": "5.15.162", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.1.96", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.6.36", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.9.7", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/af90e3d73dc45778767b2fb6e7edd57ebe34380d"}, {"url": "https://git.kernel.org/stable/c/ec4d970b597ee5e17b0d8d73b7875197ce9a04d4"}, {"url": "https://git.kernel.org/stable/c/d62df86c172033679d744f07d89e93e367dd11f6"}, {"url": "https://git.kernel.org/stable/c/561475d53aa7e4511ee7cdba8728ded81cf1db1c"}, {"url": "https://git.kernel.org/stable/c/9a3bc8d16e0aacd65c31aaf23a2bced3288a7779"}], "title": "seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors", "x_generator": {"engine": "bippy-c9c4e1df01b2"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:39:55.923Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/af90e3d73dc45778767b2fb6e7edd57ebe34380d", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ec4d970b597ee5e17b0d8d73b7875197ce9a04d4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d62df86c172033679d744f07d89e93e367dd11f6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/561475d53aa7e4511ee7cdba8728ded81cf1db1c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/9a3bc8d16e0aacd65c31aaf23a2bced3288a7779", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-40957", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T17:03:38.761289Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:24.035Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-40957", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.593Z", "datePublished": "2024-07-12T12:31:59.747Z", "dateUpdated": "2024-08-02T04:39:55.923Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:52:11.461Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nseg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors\n\ninput_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for\nPREROUTING hook, in PREROUTING hook, we should passing a valid indev,\nand a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer\ndereference, as below:\n\n [74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090\n [74830.655633] #PF: supervisor read access in kernel mode\n [74830.657888] #PF: error_code(0x0000) - not-present page\n [74830.659500] PGD 0 P4D 0\n [74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI\n ...\n [74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011\n [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n ...\n [74830.689725] Call Trace:\n [74830.690402] <IRQ>\n [74830.690953] ? show_trace_log_lvl+0x1c4/0x2df\n [74830.692020] ? show_trace_log_lvl+0x1c4/0x2df\n [74830.693095] ? ipt_do_table+0x286/0x710 [ip_tables]\n [74830.694275] ? __die_body.cold+0x8/0xd\n [74830.695205] ? page_fault_oops+0xac/0x140\n [74830.696244] ? exc_page_fault+0x62/0x150\n [74830.697225] ? asm_exc_page_fault+0x22/0x30\n [74830.698344] ? rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n [74830.699540] ipt_do_table+0x286/0x710 [ip_tables]\n [74830.700758] ? ip6_route_input+0x19d/0x240\n [74830.701752] nf_hook_slow+0x3f/0xb0\n [74830.702678] input_action_end_dx4+0x19b/0x1e0\n [74830.703735] ? input_action_end_t+0xe0/0xe0\n [74830.704734] seg6_local_input_core+0x2d/0x60\n [74830.705782] lwtunnel_input+0x5b/0xb0\n [74830.706690] __netif_receive_skb_one_core+0x63/0xa0\n [74830.707825] process_backlog+0x99/0x140\n [74830.709538] __napi_poll+0x2c/0x160\n [74830.710673] net_rx_action+0x296/0x350\n [74830.711860] __do_softirq+0xcb/0x2ac\n [74830.713049] do_softirq+0x63/0x90\n\ninput_action_end_dx4() passing a NULL indev to NF_HOOK(), and finally\ntrigger a NULL dereference in rpfilter_mt()->rpfilter_is_loopback():\n\n static bool\n rpfilter_is_loopback(const struct sk_buff *skb,\n \t const struct net_device *in)\n {\n // in is NULL\n return skb->pkt_type == PACKET_LOOPBACK ||\n \t in->flags & IFF_LOOPBACK;\n }"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/seg6_local.c"], "versions": [{"version": "7a3f5b0de364", "lessThan": "af90e3d73dc4", "status": "affected", "versionType": "git"}, {"version": "7a3f5b0de364", "lessThan": "ec4d970b597e", "status": "affected", "versionType": "git"}, {"version": "7a3f5b0de364", "lessThan": "d62df86c1720", "status": "affected", "versionType": "git"}, {"version": "7a3f5b0de364", "lessThan": "561475d53aa7", "status": "affected", "versionType": "git"}, {"version": "7a3f5b0de364", "lessThan": "9a3bc8d16e0a", "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/ipv6/seg6_local.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "custom"}, {"version": "5.15.162", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.1.96", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.6.36", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.9.7", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/af90e3d73dc45778767b2fb6e7edd57ebe34380d"}, {"url": "https://git.kernel.org/stable/c/ec4d970b597ee5e17b0d8d73b7875197ce9a04d4"}, {"url": "https://git.kernel.org/stable/c/d62df86c172033679d744f07d89e93e367dd11f6"}, {"url": "https://git.kernel.org/stable/c/561475d53aa7e4511ee7cdba8728ded81cf1db1c"}, {"url": "https://git.kernel.org/stable/c/9a3bc8d16e0aacd65c31aaf23a2bced3288a7779"}], "title": "seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors", "x_generator": {"engine": "bippy-c9c4e1df01b2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-40957", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T17:03:38.761289Z"}}}], "providerMetadata": {"shortName": "CISA-ADP", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "dateUpdated": "2024-09-11T12:42:22.423Z"}, "title": "CISA ADP Vulnrichment"}]}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4626E4B7-D5F4-42CC-93A8-B73E6384273F", "versionEndExcluding": "5.15.162", "versionStartIncluding": "5.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "61E887B4-732A-40D2-9983-CC6F281EBFB7", "versionEndExcluding": "6.1.96", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E1046C95-860A-45B0-B718-2B29F65BFF10", "versionEndExcluding": "6.6.36", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C", "versionEndExcluding": "6.9.7", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*", "matchCriteriaId": "2EBB4392-5FA6-4DA9-9772-8F9C750109FA", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*", "matchCriteriaId": "331C2F14-12C7-45D5-893D-8C52EE38EA10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*", "matchCriteriaId": "3173713D-909A-4DD3-9DD4-1E171EB057EE", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*", "matchCriteriaId": "79F18AFA-40F7-43F0-BA30-7BDB65F918B9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nseg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors\n\ninput_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for\nPREROUTING hook, in PREROUTING hook, we should passing a valid indev,\nand a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer\ndereference, as below:\n\n [74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090\n [74830.655633] #PF: supervisor read access in kernel mode\n [74830.657888] #PF: error_code(0x0000) - not-present page\n [74830.659500] PGD 0 P4D 0\n [74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI\n ...\n [74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011\n [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n ...\n [74830.689725] Call Trace:\n [74830.690402] <IRQ>\n [74830.690953] ? show_trace_log_lvl+0x1c4/0x2df\n [74830.692020] ? show_trace_log_lvl+0x1c4/0x2df\n [74830.693095] ? ipt_do_table+0x286/0x710 [ip_tables]\n [74830.694275] ? __die_body.cold+0x8/0xd\n [74830.695205] ? page_fault_oops+0xac/0x140\n [74830.696244] ? exc_page_fault+0x62/0x150\n [74830.697225] ? asm_exc_page_fault+0x22/0x30\n [74830.698344] ? rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n [74830.699540] ipt_do_table+0x286/0x710 [ip_tables]\n [74830.700758] ? ip6_route_input+0x19d/0x240\n [74830.701752] nf_hook_slow+0x3f/0xb0\n [74830.702678] input_action_end_dx4+0x19b/0x1e0\n [74830.703735] ? input_action_end_t+0xe0/0xe0\n [74830.704734] seg6_local_input_core+0x2d/0x60\n [74830.705782] lwtunnel_input+0x5b/0xb0\n [74830.706690] __netif_receive_skb_one_core+0x63/0xa0\n [74830.707825] process_backlog+0x99/0x140\n [74830.709538] __napi_poll+0x2c/0x160\n [74830.710673] net_rx_action+0x296/0x350\n [74830.711860] __do_softirq+0xcb/0x2ac\n [74830.713049] do_softirq+0x63/0x90\n\ninput_action_end_dx4() passing a NULL indev to NF_HOOK(), and finally\ntrigger a NULL dereference in rpfilter_mt()->rpfilter_is_loopback():\n\n static bool\n rpfilter_is_loopback(const struct sk_buff *skb,\n \t const struct net_device *in)\n {\n // in is NULL\n return skb->pkt_type == PACKET_LOOPBACK ||\n \t in->flags & IFF_LOOPBACK;\n }"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: seg6: corrige el paso de par\u00e1metros al llamar a NF_HOOK() en los comportamientos End.DX4 y End.DX6 input_action_end_dx4() y input_action_end_dx6() se llaman NF_HOOK() para el gancho PREROUTING, en el gancho PREROUTING , debemos pasar un indev v\u00e1lido y un outdev NULL a NF_HOOK(); de lo contrario, podemos desencadenar una desreferencia del puntero NULL, como se muestra a continuaci\u00f3n: [74830.647293] ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 00000000000000090 [74830.655633] #PF: acceso de lectura del supervisor en modo kernel [74830.657888] #PF: error_code(0x0000) - p\u00e1gina no presente [74830.659500] PGD 0 P4D 0 [74830.660450] Ups: 0000 [#1] PREEMPT SMP PTI... [74830.664953] Nombre de hardware: Red Hat KVM , BIOS 0.5.1 01/01/2011 [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter] ... [74830.689725] Seguimiento de llamadas: [74830.690402] [74830.690953] ? show_trace_log_lvl+0x1c4/0x2df [74830.692020] ? show_trace_log_lvl+0x1c4/0x2df [74830.693095] ? ipt_do_table+0x286/0x710 [ip_tables] [74830.694275] ? __die_body.cold+0x8/0xd [74830.695205] ? page_fault_oops+0xac/0x140 [74830.696244] ? exc_page_fault+0x62/0x150 [74830.697225] ? asm_exc_page_fault+0x22/0x30 [74830.698344] ? rpfilter_mt+0x44/0x15e [ipt_rpfilter] [74830.699540] ipt_do_table+0x286/0x710 [ip_tables] [74830.700758] ? ip6_route_input+0x19d/0x240 [74830.701752] nf_hook_slow+0x3f/0xb0 [74830.702678] input_action_end_dx4+0x19b/0x1e0 [74830.703735] ? input_action_end_t+0xe0/0xe0 [74830.704734] seg6_local_input_core+0x2d/0x60 [74830.705782] lwtunnel_input+0x5b/0xb0 [74830.706690] __netif_receive_skb_one_core+0x63/0xa0 830.707825] proceso_atrasado+0x99/0x140 [74830.709538] __napi_poll+0x2c/0x160 [74830.710673] net_rx_action+ 0x296/0x350 [74830.711860] __do_softirq+0xcb/0x2ac [74830.713049] do_softirq+0x63/0x90 input_action_end_dx4() pasando un indev NULL a NF_HOOK(), y finalmente activa una desreferencia NULL en rpfilter_mt()-&gt;rpfilter_is_lo opback(): bool est\u00e1tico rpfilter_is_loopback (const struct sk_buff *skb, const struct net_device *in) { // in es NULL return skb-&gt;pkt_type == PACKET_LOOPBACK || en-&gt;flags &amp; IFF_LOOPBACK; }"}], "id": "CVE-2024-40957", "lastModified": "2024-08-28T18:58:59.793", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-07-12T13:15:17.823", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/561475d53aa7e4511ee7cdba8728ded81cf1db1c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9a3bc8d16e0aacd65c31aaf23a2bced3288a7779"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af90e3d73dc45778767b2fb6e7edd57ebe34380d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d62df86c172033679d744f07d89e93e367dd11f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ec4d970b597ee5e17b0d8d73b7875197ce9a04d4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5928", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.33.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-28T00:00:00Z"}, {"advisory": "RHSA-2024:5928", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.33.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-28T00:00:00Z"}], "bugzilla": {"description": "kernel: seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors", "id": "2297541", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2297541"}, "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": "verified"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nseg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors\ninput_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for\nPREROUTING hook, in PREROUTING hook, we should passing a valid indev,\nand a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer\ndereference, as below:\n[74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090\n[74830.655633] #PF: supervisor read access in kernel mode\n[74830.657888] #PF: error_code(0x0000) - not-present page\n[74830.659500] PGD 0 P4D 0\n[74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI\n...\n[74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011\n[74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n...\n[74830.689725] Call Trace:\n[74830.690402] <IRQ>\n[74830.690953] ? show_trace_log_lvl+0x1c4/0x2df\n[74830.692020] ? show_trace_log_lvl+0x1c4/0x2df\n[74830.693095] ? ipt_do_table+0x286/0x710 [ip_tables]\n[74830.694275] ? __die_body.cold+0x8/0xd\n[74830.695205] ? page_fault_oops+0xac/0x140\n[74830.696244] ? exc_page_fault+0x62/0x150\n[74830.697225] ? asm_exc_page_fault+0x22/0x30\n[74830.698344] ? rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n[74830.699540] ipt_do_table+0x286/0x710 [ip_tables]\n[74830.700758] ? ip6_route_input+0x19d/0x240\n[74830.701752] nf_hook_slow+0x3f/0xb0\n[74830.702678] input_action_end_dx4+0x19b/0x1e0\n[74830.703735] ? input_action_end_t+0xe0/0xe0\n[74830.704734] seg6_local_input_core+0x2d/0x60\n[74830.705782] lwtunnel_input+0x5b/0xb0\n[74830.706690] __netif_receive_skb_one_core+0x63/0xa0\n[74830.707825] process_backlog+0x99/0x140\n[74830.709538] __napi_poll+0x2c/0x160\n[74830.710673] net_rx_action+0x296/0x350\n[74830.711860] __do_softirq+0xcb/0x2ac\n[74830.713049] do_softirq+0x63/0x90\ninput_action_end_dx4() passing a NULL indev to NF_HOOK(), and finally\ntrigger a NULL dereference in rpfilter_mt()->rpfilter_is_loopback():\nstatic bool\nrpfilter_is_loopback(const struct sk_buff *skb,\nconst struct net_device *in)\n{\n// in is NULL\nreturn skb->pkt_type == PACKET_LOOPBACK ||\nin->flags & IFF_LOOPBACK;\n}"], "name": "CVE-2024-40957", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-40957\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-40957\nhttps://lore.kernel.org/linux-cve-announce/2024071224-CVE-2024-40957-94a5@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 5.15.162, kernel 6.1.96, kernel 6.6.36, kernel 6.9.7, kernel 6.10-rc5"}