{"id":"CVE-2024-50133","state":"PUBLISHED","title":"LoongArch: Don't crash in stack_top() for tasks without vDSO","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Don't crash in stack_top() for tasks without vDSO\n\nNot all tasks have a vDSO mapped, for example kthreads never do. If such\na task ever ends up calling stack_top(), it will derefence the NULL vdso\npointer and crash.\n\nThis can for example happen when using kunit:\n\n\t[<9000000000203874>] stack_top+0x58/0xa8\n\t[<90000000002956cc>] arch_pick_mmap_layout+0x164/0x220\n\t[<90000000003c284c>] kunit_vm_mmap_init+0x108/0x12c\n\t[<90000000003c1fbc>] __kunit_add_resource+0x38/0x8c\n\t[<90000000003c2704>] kunit_vm_mmap+0x88/0xc8\n\t[<9000000000410b14>] usercopy_test_init+0xbc/0x25c\n\t[<90000000003c1db4>] kunit_try_run_case+0x5c/0x184\n\t[<90000000003c3d54>] kunit_generic_run_threadfn_adapter+0x24/0x48\n\t[<900000000022e4bc>] kthread+0xc8/0xd4\n\t[<9000000000200ce8>] ret_from_kernel_thread+0xc/0xa4","publishedAt":"2024-11-05T17:10:58.264Z","updatedAt":"2026-05-11T20:46:04.800Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"803b0fc5c3f2baa6e54978cd576407896f789b08","status":"affected","lessThan":"a67d4a02bf43e15544179895ede7d5f97b84b550","versionType":"git"},{"version":"803b0fc5c3f2baa6e54978cd576407896f789b08","status":"affected","lessThan":"a94c197d4d749954dfaa37e907fcc8c04e4aad7e","versionType":"git"},{"version":"803b0fc5c3f2baa6e54978cd576407896f789b08","status":"affected","lessThan":"041cc3860b06770357876d1114d615333b0fbf31","versionType":"git"},{"version":"803b0fc5c3f2baa6e54978cd576407896f789b08","status":"affected","lessThan":"134475a9ab8487527238d270639a8cb74c10aab2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kernel/process.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.115","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.59","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.11.6","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kernel/process.c"]}],"references":["https://git.kernel.org/stable/c/a67d4a02bf43e15544179895ede7d5f97b84b550","https://git.kernel.org/stable/c/a94c197d4d749954dfaa37e907fcc8c04e4aad7e","https://git.kernel.org/stable/c/041cc3860b06770357876d1114d615333b0fbf31","https://git.kernel.org/stable/c/134475a9ab8487527238d270639a8cb74c10aab2","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:07:56.516Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/50xxx/CVE-2024-50133.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-50133","state":"PUBLISHED","datePublished":"2024-11-05T17:10:58.264Z","dateUpdated":"2026-05-11T20:46:04.800Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-10-21T19:36:19.955Z"},"containers":{"cna":{"title":"LoongArch: Don't crash in stack_top() for tasks without vDSO","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Don't crash in stack_top() for tasks without vDSO\n\nNot all tasks have a vDSO mapped, for example kthreads never do. If such\na task ever ends up calling stack_top(), it will derefence the NULL vdso\npointer and crash.\n\nThis can for example happen when using kunit:\n\n\t[<9000000000203874>] stack_top+0x58/0xa8\n\t[<90000000002956cc>] arch_pick_mmap_layout+0x164/0x220\n\t[<90000000003c284c>] kunit_vm_mmap_init+0x108/0x12c\n\t[<90000000003c1fbc>] __kunit_add_resource+0x38/0x8c\n\t[<90000000003c2704>] kunit_vm_mmap+0x88/0xc8\n\t[<9000000000410b14>] usercopy_test_init+0xbc/0x25c\n\t[<90000000003c1db4>] kunit_try_run_case+0x5c/0x184\n\t[<90000000003c3d54>] kunit_generic_run_threadfn_adapter+0x24/0x48\n\t[<900000000022e4bc>] kthread+0xc8/0xd4\n\t[<9000000000200ce8>] ret_from_kernel_thread+0xc/0xa4"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"803b0fc5c3f2baa6e54978cd576407896f789b08","status":"affected","lessThan":"a67d4a02bf43e15544179895ede7d5f97b84b550","versionType":"git"},{"version":"803b0fc5c3f2baa6e54978cd576407896f789b08","status":"affected","lessThan":"a94c197d4d749954dfaa37e907fcc8c04e4aad7e","versionType":"git"},{"version":"803b0fc5c3f2baa6e54978cd576407896f789b08","status":"affected","lessThan":"041cc3860b06770357876d1114d615333b0fbf31","versionType":"git"},{"version":"803b0fc5c3f2baa6e54978cd576407896f789b08","status":"affected","lessThan":"134475a9ab8487527238d270639a8cb74c10aab2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kernel/process.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.115","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.59","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.11.6","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kernel/process.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a67d4a02bf43e15544179895ede7d5f97b84b550"},{"url":"https://git.kernel.org/stable/c/a94c197d4d749954dfaa37e907fcc8c04e4aad7e"},{"url":"https://git.kernel.org/stable/c/041cc3860b06770357876d1114d615333b0fbf31"},{"url":"https://git.kernel.org/stable/c/134475a9ab8487527238d270639a8cb74c10aab2"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:46:04.800Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.115"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.59"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.11.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.12"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2024-50133","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T20:21:23.672110Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T20:27:15.125Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T22:25:53.158Z"}}]}}}