CVE-2024-49926

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-49926", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T12:17:06.038Z", "datePublished": "2024-10-21T18:01:50.405Z", "dateUpdated": "2026-10-30T12:19:43.730Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:19:43.730Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()\n\nFor kernels built with CONFIG_FORCE_NR_CPUS=y, the nr_cpu_ids is\ndefined as NR_CPUS instead of the number of possible cpus, this\nwill cause the following system panic:\n\nsmpboot: Allowing 4 CPUs, 0 hotplug CPUs\n...\nsetup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:512 nr_node_ids:1\n...\nBUG: unable to handle page fault for address: ffffffff9911c8c8\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 0 PID: 15 Comm: rcu_tasks_trace Tainted: G W\n6.6.21 #1 5dc7acf91a5e8e9ac9dcfc35bee0245691283ea6\nRIP: 0010:rcu_tasks_need_gpcb+0x25d/0x2c0\nRSP: 0018:ffffa371c00a3e60 EFLAGS: 00010082\nCR2: ffffffff9911c8c8 CR3: 000000040fa20005 CR4: 00000000001706f0\nCall Trace:\n<TASK>\n? __die+0x23/0x80\n? page_fault_oops+0xa4/0x180\n? exc_page_fault+0x152/0x180\n? asm_exc_page_fault+0x26/0x40\n? rcu_tasks_need_gpcb+0x25d/0x2c0\n? __pfx_rcu_tasks_kthread+0x40/0x40\nrcu_tasks_one_gp+0x69/0x180\nrcu_tasks_kthread+0x94/0xc0\nkthread+0xe8/0x140\n? __pfx_kthread+0x40/0x40\nret_from_fork+0x34/0x80\n? __pfx_kthread+0x40/0x40\nret_from_fork_asm+0x1b/0x80\n</TASK>\n\nConsidering that there may be holes in the CPU numbers, use the\nmaximum possible cpu number, instead of nr_cpu_ids, for configuring\nenqueue and dequeue limits.\n\n[ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/rcu/tasks.h"], "versions": [{"version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "a89f6e90e64ecadd19f32bb8128d22b518bd656c", "status": "affected", "versionType": "git"}, {"version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "b3b2431ed27f4ebc28e26cdf005c1de42dc60bdf", "status": "affected", "versionType": "git"}, {"version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "3104bddc666ff64b90491868bbc4c7ebdd90aedf", "status": "affected", "versionType": "git"}, {"version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "05095271a4fb0f6497121a057f9a2edf386d5d96", "status": "affected", "versionType": "git"}, {"version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "fd70e9f1d85f5323096ad313ba73f5fe3d15ea41", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/rcu/tasks.h"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.60", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10.14", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.3", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.6.60"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.10.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.11.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a89f6e90e64ecadd19f32bb8128d22b518bd656c"}, {"url": "https://git.kernel.org/stable/c/b3b2431ed27f4ebc28e26cdf005c1de42dc60bdf"}, {"url": "https://git.kernel.org/stable/c/3104bddc666ff64b90491868bbc4c7ebdd90aedf"}, {"url": "https://git.kernel.org/stable/c/05095271a4fb0f6497121a057f9a2edf386d5d96"}, {"url": "https://git.kernel.org/stable/c/fd70e9f1d85f5323096ad313ba73f5fe3d15ea41"}], "title": "rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-49926", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:39:42.362013Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:48:43.951Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-49926", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:39:42.362013Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:39:45.749Z"}}], "cna": {"title": "rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "a89f6e90e64ecadd19f32bb8128d22b518bd656c", "versionType": "git"}, {"status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "b3b2431ed27f4ebc28e26cdf005c1de42dc60bdf", "versionType": "git"}, {"status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "3104bddc666ff64b90491868bbc4c7ebdd90aedf", "versionType": "git"}, {"status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "05095271a4fb0f6497121a057f9a2edf386d5d96", "versionType": "git"}, {"status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "lessThan": "fd70e9f1d85f5323096ad313ba73f5fe3d15ea41", "versionType": "git"}], "programFiles": ["kernel/rcu/tasks.h"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"status": "unaffected", "version": "0", "lessThan": "5.17", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.60", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.10.14", "versionType": "semver", "lessThanOrEqual": "6.10.*"}, {"status": "unaffected", "version": "6.11.3", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/rcu/tasks.h"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/a89f6e90e64ecadd19f32bb8128d22b518bd656c"}, {"url": "https://git.kernel.org/stable/c/b3b2431ed27f4ebc28e26cdf005c1de42dc60bdf"}, {"url": "https://git.kernel.org/stable/c/3104bddc666ff64b90491868bbc4c7ebdd90aedf"}, {"url": "https://git.kernel.org/stable/c/05095271a4fb0f6497121a057f9a2edf386d5d96"}, {"url": "https://git.kernel.org/stable/c/fd70e9f1d85f5323096ad313ba73f5fe3d15ea41"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()\n\nFor kernels built with CONFIG_FORCE_NR_CPUS=y, the nr_cpu_ids is\ndefined as NR_CPUS instead of the number of possible cpus, this\nwill cause the following system panic:\n\nsmpboot: Allowing 4 CPUs, 0 hotplug CPUs\n...\nsetup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:512 nr_node_ids:1\n...\nBUG: unable to handle page fault for address: ffffffff9911c8c8\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 0 PID: 15 Comm: rcu_tasks_trace Tainted: G W\n6.6.21 #1 5dc7acf91a5e8e9ac9dcfc35bee0245691283ea6\nRIP: 0010:rcu_tasks_need_gpcb+0x25d/0x2c0\nRSP: 0018:ffffa371c00a3e60 EFLAGS: 00010082\nCR2: ffffffff9911c8c8 CR3: 000000040fa20005 CR4: 00000000001706f0\nCall Trace:\n<TASK>\n? __die+0x23/0x80\n? page_fault_oops+0xa4/0x180\n? exc_page_fault+0x152/0x180\n? asm_exc_page_fault+0x26/0x40\n? rcu_tasks_need_gpcb+0x25d/0x2c0\n? __pfx_rcu_tasks_kthread+0x40/0x40\nrcu_tasks_one_gp+0x69/0x180\nrcu_tasks_kthread+0x94/0xc0\nkthread+0xe8/0x140\n? __pfx_kthread+0x40/0x40\nret_from_fork+0x34/0x80\n? __pfx_kthread+0x40/0x40\nret_from_fork_asm+0x1b/0x80\n</TASK>\n\nConsidering that there may be holes in the CPU numbers, use the\nmaximum possible cpu number, instead of nr_cpu_ids, for configuring\nenqueue and dequeue limits.\n\n[ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ]"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.191", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.60", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.10.14", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.3", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12", "versionStartIncluding": "5.17"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:19:43.730Z"}}}, "cveMetadata": {"cveId": "CVE-2024-49926", "state": "PUBLISHED", "dateUpdated": "2026-10-30T12:19:43.730Z", "dateReserved": "2024-10-21T12:17:06.038Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-21T18:01:50.405Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/rcu/tasks.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a89f6e90e64ecadd19f32bb8128d22b518bd656c", "status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "versionType": "git"}, {"lessThan": "b3b2431ed27f4ebc28e26cdf005c1de42dc60bdf", "status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "versionType": "git"}, {"lessThan": "3104bddc666ff64b90491868bbc4c7ebdd90aedf", "status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "versionType": "git"}, {"lessThan": "05095271a4fb0f6497121a057f9a2edf386d5d96", "status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "versionType": "git"}, {"lessThan": "fd70e9f1d85f5323096ad313ba73f5fe3d15ea41", "status": "affected", "version": "8610b65680390a103b58f46282a1b05f7eebbba4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/rcu/tasks.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"lessThan": "5.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.60", "versionType": "semver"}, {"lessThanOrEqual": "6.10.*", "status": "unaffected", "version": "6.10.14", "versionType": "semver"}, {"lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "652638C5-5F25-4DF3-AD42-DD3252A97152", "versionEndExcluding": "6.10.14", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "54D9C704-D679-41A7-9C40-10A6B1E7FFE9", "versionEndExcluding": "6.11.3", "versionStartIncluding": "6.11", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()\n\nFor kernels built with CONFIG_FORCE_NR_CPUS=y, the nr_cpu_ids is\ndefined as NR_CPUS instead of the number of possible cpus, this\nwill cause the following system panic:\n\nsmpboot: Allowing 4 CPUs, 0 hotplug CPUs\n...\nsetup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:512 nr_node_ids:1\n...\nBUG: unable to handle page fault for address: ffffffff9911c8c8\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 0 PID: 15 Comm: rcu_tasks_trace Tainted: G W\n6.6.21 #1 5dc7acf91a5e8e9ac9dcfc35bee0245691283ea6\nRIP: 0010:rcu_tasks_need_gpcb+0x25d/0x2c0\nRSP: 0018:ffffa371c00a3e60 EFLAGS: 00010082\nCR2: ffffffff9911c8c8 CR3: 000000040fa20005 CR4: 00000000001706f0\nCall Trace:\n<TASK>\n? __die+0x23/0x80\n? page_fault_oops+0xa4/0x180\n? exc_page_fault+0x152/0x180\n? asm_exc_page_fault+0x26/0x40\n? rcu_tasks_need_gpcb+0x25d/0x2c0\n? __pfx_rcu_tasks_kthread+0x40/0x40\nrcu_tasks_one_gp+0x69/0x180\nrcu_tasks_kthread+0x94/0xc0\nkthread+0xe8/0x140\n? __pfx_kthread+0x40/0x40\nret_from_fork+0x34/0x80\n? __pfx_kthread+0x40/0x40\nret_from_fork_asm+0x1b/0x80\n</TASK>\n\nConsidering that there may be holes in the CPU numbers, use the\nmaximum possible cpu number, instead of nr_cpu_ids, for configuring\nenqueue and dequeue limits.\n\n[ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ]"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rcu-tasks: Se corrige el acceso a la variable rtpcp percpu inexistente en rcu_tasks_need_gpcb() Para kernels creados con CONFIG_FORCE_NR_CPUS=y, nr_cpu_ids se define como NR_CPUS en lugar del n\u00famero de CPU posibles, esto provocar\u00e1 el siguiente p\u00e1nico del sistema: smpboot: Permitiendo 4 CPU, 0 CPU hotplug ... setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:512 nr_node_ids:1 ... ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: ffffffff9911c8c8 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 15 Comm: rcu_tasks_trace Tainted: GW 6.6.21 #1 5dc7acf91a5e8e9ac9dcfc35bee0245691283ea6 RIP: 0010:rcu_tasks_need_gpcb+0x25d/0x2c0 RSP: 0018:ffffa371c00a3e60 EFLAGS: 00010082 CR2: ffffffff9911c8c8 CR3: 000000040fa20005 CR4: 00000000001706f0 Rastreo de llamadas: ? __die+0x23/0x80 ? page_fault_oops+0xa4/0x180 ? exc_page_fault+0x152/0x180 ? asm_exc_page_fault+0x26/0x40 ? rcu_tasks_need_gpcb+0x25d/0x2c0 ? __pfx_rcu_tasks_kthread+0x40/0x40 rcu_tasks_one_gp+0x69/0x180 rcu_tasks_kthread+0x94/0xc0 kthread+0xe8/0x140 ? __pfx_kthread+0x40/0x40 ret_from_fork+0x34/0x80 ? __pfx_kthread+0x40/0x40 ret_from_fork_asm+0x1b/0x80 Teniendo en cuenta que puede haber agujeros en los n\u00fameros de CPU, utilice el n\u00famero m\u00e1ximo posible de CPU, en lugar de nr_cpu_ids, para configurar los l\u00edmites de encolado y desencolado. [ neeraj.upadhyay: Corregir error de compilaci\u00f3n de htmldocs informado por Stephen Rothwell ]"}], "id": "CVE-2024-49926", "lastModified": "2026-10-30T13:17:39.710", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-49926", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-22T13:39:42.362013Z", "version": "2.0.3"}}]}, "published": "2024-10-21T18:15:14.623", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/05095271a4fb0f6497121a057f9a2edf386d5d96"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3104bddc666ff64b90491868bbc4c7ebdd90aedf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a89f6e90e64ecadd19f32bb8128d22b518bd656c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b3b2431ed27f4ebc28e26cdf005c1de42dc60bdf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fd70e9f1d85f5323096ad313ba73f5fe3d15ea41"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()", "id": "2320429", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320429"}, "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-119", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nrcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()\nFor kernels built with CONFIG_FORCE_NR_CPUS=y, the nr_cpu_ids is\ndefined as NR_CPUS instead of the number of possible cpus, this\nwill cause the following system panic:\nsmpboot: Allowing 4 CPUs, 0 hotplug CPUs\n...\nsetup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:512 nr_node_ids:1\n...\nBUG: unable to handle page fault for address: ffffffff9911c8c8\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 0 PID: 15 Comm: rcu_tasks_trace Tainted: G W\n6.6.21 #1 5dc7acf91a5e8e9ac9dcfc35bee0245691283ea6\nRIP: 0010:rcu_tasks_need_gpcb+0x25d/0x2c0\nRSP: 0018:ffffa371c00a3e60 EFLAGS: 00010082\nCR2: ffffffff9911c8c8 CR3: 000000040fa20005 CR4: 00000000001706f0\nCall Trace:\n<TASK>\n? __die+0x23/0x80\n? page_fault_oops+0xa4/0x180\n? exc_page_fault+0x152/0x180\n? asm_exc_page_fault+0x26/0x40\n? rcu_tasks_need_gpcb+0x25d/0x2c0\n? __pfx_rcu_tasks_kthread+0x40/0x40\nrcu_tasks_one_gp+0x69/0x180\nrcu_tasks_kthread+0x94/0xc0\nkthread+0xe8/0x140\n? __pfx_kthread+0x40/0x40\nret_from_fork+0x34/0x80\n? __pfx_kthread+0x40/0x40\nret_from_fork_asm+0x1b/0x80\n</TASK>\nConsidering that there may be holes in the CPU numbers, use the\nmaximum possible cpu number, instead of nr_cpu_ids, for configuring\nenqueue and dequeue limits.\n[ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ]"], "name": "CVE-2024-49926", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-49926\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-49926\nhttps://lore.kernel.org/linux-cve-announce/2024102125-CVE-2024-49926-f707@gregkh/T"], "threat_severity": "Moderate"}

{}