{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50301", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.987Z", "datePublished": "2024-11-19T01:30:49.982Z", "dateUpdated": "2026-05-12T12:00:59.478Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:49:30.283Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsecurity/keys: fix slab-out-of-bounds in key_task_permission\n\nKASAN reports an out of bounds read:\nBUG: KASAN: slab-out-of-bounds in __kuid_val include/linux/uidgid.h:36\nBUG: KASAN: slab-out-of-bounds in uid_eq include/linux/uidgid.h:63 [inline]\nBUG: KASAN: slab-out-of-bounds in key_task_permission+0x394/0x410\nsecurity/keys/permission.c:54\nRead of size 4 at addr ffff88813c3ab618 by task stress-ng/4362\n\nCPU: 2 PID: 4362 Comm: stress-ng Not tainted 5.10.0-14930-gafbffd6c3ede #15\nCall Trace:\n __dump_stack lib/dump_stack.c:82 [inline]\n dump_stack+0x107/0x167 lib/dump_stack.c:123\n print_address_description.constprop.0+0x19/0x170 mm/kasan/report.c:400\n __kasan_report.cold+0x6c/0x84 mm/kasan/report.c:560\n kasan_report+0x3a/0x50 mm/kasan/report.c:585\n __kuid_val include/linux/uidgid.h:36 [inline]\n uid_eq include/linux/uidgid.h:63 [inline]\n key_task_permission+0x394/0x410 security/keys/permission.c:54\n search_nested_keyrings+0x90e/0xe90 security/keys/keyring.c:793\n\nThis issue was also reported by syzbot.\n\nIt can be reproduced by following these steps(more details [1]):\n1. Obtain more than 32 inputs that have similar hashes, which ends with the\n pattern '0xxxxxxxe6'.\n2. Reboot and add the keys obtained in step 1.\n\nThe reproducer demonstrates how this issue happened:\n1. In the search_nested_keyrings function, when it iterates through the\n slots in a node(below tag ascend_to_node), if the slot pointer is meta\n and node->back_pointer != NULL(it means a root), it will proceed to\n descend_to_node. However, there is an exception. If node is the root,\n and one of the slots points to a shortcut, it will be treated as a\n keyring.\n2. Whether the ptr is keyring decided by keyring_ptr_is_keyring function.\n However, KEYRING_PTR_SUBTYPE is 0x2UL, the same as\n ASSOC_ARRAY_PTR_SUBTYPE_MASK.\n3. When 32 keys with the similar hashes are added to the tree, the ROOT\n has keys with hashes that are not similar (e.g. slot 0) and it splits\n NODE A without using a shortcut. When NODE A is filled with keys that\n all hashes are xxe6, the keys are similar, NODE A will split with a\n shortcut. Finally, it forms the tree as shown below, where slot 6 points\n to a shortcut.\n\n NODE A\n +------>+---+\n ROOT | | 0 | xxe6\n +---+ | +---+\n xxxx | 0 | shortcut : : xxe6\n +---+ | +---+\n xxe6 : : | | | xxe6\n +---+ | +---+\n | 6 |---+ : : xxe6\n +---+ +---+\n xxe6 : : | f | xxe6\n +---+ +---+\n xxe6 | f |\n +---+\n\n4. As mentioned above, If a slot(slot 6) of the root points to a shortcut,\n it may be mistakenly transferred to a key*, leading to a read\n out-of-bounds read.\n\nTo fix this issue, one should jump to descend_to_node if the ptr is a\nshortcut, regardless of whether the node is root or not.\n\n[1] https://lore.kernel.org/linux-kernel/1cfa878e-8c7b-4570-8606-21daf5e13ce7@huaweicloud.com/\n\n[jarkko: tweaked the commit message a bit to have an appropriate closes\n tag.]" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "security/keys/keyring.c" ], "versions": [ { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "lessThan": "c3ce634ad953ce48c75c39bdfd8b711dd95f346f", "status": "affected", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "lessThan": "4efb69a0e294ef201bcdf7ce3d6202cd0a545a5d", "status": "affected", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "lessThan": "1e4332581cd4eed75aea77af6f66cdcdda8b49b9", "status": "affected", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "lessThan": "199c20fb7499c79557a075dc24e9a7dae7d9f1ce", "status": "affected", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "lessThan": "bbad2d5b6c99db468d8f88b6ba6a56ed409b4881", "status": "affected", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "lessThan": "3e79ad156bedf2da0ab909a118d2cec6c9c22b79", "status": "affected", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "lessThan": "e0a317ad68e4ea48a0158187238c5407e4fdec8b", "status": "affected", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "lessThan": "4a74da044ec9ec8679e6beccc4306b936b62873f", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "security/keys/keyring.c" ], "versions": [ { "version": "3.13", "status": "affected" }, { "version": "0", "lessThan": "3.13", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.324", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.286", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.230", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.172", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.117", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.61", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.8", "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": "3.13", "versionEndExcluding": "4.19.324" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.4.286" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.10.230" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.15.172" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.1.117" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.6.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.11.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c3ce634ad953ce48c75c39bdfd8b711dd95f346f" }, { "url": "https://git.kernel.org/stable/c/4efb69a0e294ef201bcdf7ce3d6202cd0a545a5d" }, { "url": "https://git.kernel.org/stable/c/1e4332581cd4eed75aea77af6f66cdcdda8b49b9" }, { "url": "https://git.kernel.org/stable/c/199c20fb7499c79557a075dc24e9a7dae7d9f1ce" }, { "url": "https://git.kernel.org/stable/c/bbad2d5b6c99db468d8f88b6ba6a56ed409b4881" }, { "url": "https://git.kernel.org/stable/c/3e79ad156bedf2da0ab909a118d2cec6c9c22b79" }, { "url": "https://git.kernel.org/stable/c/e0a317ad68e4ea48a0158187238c5407e4fdec8b" }, { "url": "https://git.kernel.org/stable/c/4a74da044ec9ec8679e6beccc4306b936b62873f" } ], "title": "security/keys: fix slab-out-of-bounds in key_task_permission", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50301", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:13:51.070925Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:17:19.840Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:28:18.152Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T12:00:59.478Z" }, "affected": [ { "vendor": "Siemens", "product": "RUGGEDCOM RST2428P", "versions": [ { "status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family", "versions": [ { "status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family", "versions": [ { "status": "affected", "version": "0", "lessThan": "V3.2", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [ { "status": "affected", "version": "0", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html" }, { "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html" }, { "url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html" } ] } ] } }