{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47297", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T13:27:52.132Z", "datePublished": "2024-05-21T14:35:19.982Z", "dateUpdated": "2024-11-06T19:35:49.436Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:03:12.512Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix uninit-value in caif_seqpkt_sendmsg\n\nWhen nr_segs equal to zero in iovec_from_user, the object\nmsg->msg_iter.iov is uninit stack memory in caif_seqpkt_sendmsg\nwhich is defined in ___sys_sendmsg. So we cann't just judge\nmsg->msg_iter.iov->base directlly. We can use nr_segs to judge\nmsg in caif_seqpkt_sendmsg whether has data buffers.\n\n=====================================================\nBUG: KMSAN: uninit-value in caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542\nCall Trace:\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0x1c9/0x220 lib/dump_stack.c:118\n kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118\n __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215\n caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542\n sock_sendmsg_nosec net/socket.c:652 [inline]\n sock_sendmsg net/socket.c:672 [inline]\n ____sys_sendmsg+0x12b6/0x1350 net/socket.c:2343\n ___sys_sendmsg net/socket.c:2397 [inline]\n __sys_sendmmsg+0x808/0xc90 net/socket.c:2480\n __compat_sys_sendmmsg net/compat.c:656 [inline]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/caif/caif_socket.c"], "versions": 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"shortName": "CISA-ADP", "dateUpdated": "2024-05-29T18:56:30.826Z"}}], "cna": {"title": "net: fix uninit-value in caif_seqpkt_sendmsg", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "bece7b2398d0", "lessThan": "d9d646acad2c", "versionType": "git"}, {"status": "affected", "version": "bece7b2398d0", "lessThan": "5c6d8e2f7187", "versionType": "git"}, {"status": "affected", "version": "bece7b2398d0", "lessThan": "ffe31dd70b70", "versionType": "git"}, {"status": "affected", "version": "bece7b2398d0", "lessThan": "452c3ed7bf63", "versionType": "git"}, {"status": "affected", "version": "bece7b2398d0", "lessThan": "9413c0abb57f", "versionType": "git"}, {"status": "affected", "version": "bece7b2398d0", "lessThan": "1582a02fecff", "versionType": "git"}, {"status": "affected", "version": "bece7b2398d0", "lessThan": "d4c7797ab151", "versionType": "git"}, {"status": 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"https://git.kernel.org/stable/c/991e634360f2622a683b48dfe44fe6d9cb765a09"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix uninit-value in caif_seqpkt_sendmsg\n\nWhen nr_segs equal to zero in iovec_from_user, the object\nmsg->msg_iter.iov is uninit stack memory in caif_seqpkt_sendmsg\nwhich is defined in ___sys_sendmsg. So we cann't just judge\nmsg->msg_iter.iov->base directlly. We can use nr_segs to judge\nmsg in caif_seqpkt_sendmsg whether has data buffers.\n\n=====================================================\nBUG: KMSAN: uninit-value in caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542\nCall Trace:\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0x1c9/0x220 lib/dump_stack.c:118\n kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118\n __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215\n caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542\n sock_sendmsg_nosec net/socket.c:652 [inline]\n sock_sendmsg net/socket.c:672 [inline]\n ____sys_sendmsg+0x12b6/0x1350 net/socket.c:2343\n ___sys_sendmsg net/socket.c:2397 [inline]\n __sys_sendmmsg+0x808/0xc90 net/socket.c:2480\n __compat_sys_sendmmsg net/compat.c:656 [inline]"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:03:12.512Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47297", "state": "PUBLISHED", "dateUpdated": "2024-11-06T19:35:49.436Z", "dateReserved": "2024-05-21T13:27:52.132Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T14:35:19.982Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix uninit-value in caif_seqpkt_sendmsg\n\nWhen nr_segs equal to zero in iovec_from_user, the object\nmsg->msg_iter.iov is uninit stack memory in caif_seqpkt_sendmsg\nwhich is defined in ___sys_sendmsg. So we cann't just judge\nmsg->msg_iter.iov->base directlly. We can use nr_segs to judge\nmsg in caif_seqpkt_sendmsg whether has data buffers.\n\n=====================================================\nBUG: KMSAN: uninit-value in caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542\nCall Trace:\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0x1c9/0x220 lib/dump_stack.c:118\n kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118\n __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215\n caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542\n sock_sendmsg_nosec net/socket.c:652 [inline]\n sock_sendmsg net/socket.c:672 [inline]\n ____sys_sendmsg+0x12b6/0x1350 net/socket.c:2343\n ___sys_sendmsg net/socket.c:2397 [inline]\n __sys_sendmmsg+0x808/0xc90 net/socket.c:2480\n __compat_sys_sendmmsg net/compat.c:656 [inline]"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net: corrige el valor uninit en caif_seqpkt_sendmsg. Cuando nr_segs es igual a cero en iovec_from_user, el objeto msg->msg_iter.iov es la memoria de pila uninit en caif_seqpkt_sendmsg que est\u00e1 definida en ___sys_sendmsg. Entonces no podemos simplemente juzgar msg->msg_iter.iov->base directamente. Podemos usar nr_segs para juzgar si msg en caif_seqpkt_sendmsg tiene buffers de datos. ==================================================== === BUG: KMSAN: valor uninit en caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:77 [en l\u00ednea] dump_stack+0x1c9/0x220 lib/dump_stack.c: 118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542 sock_sendmsg_nosec net/so cket.c: 652 [en l\u00ednea] sock_sendmsg net/socket.c:672 [en l\u00ednea] ____sys_sendmsg+0x12b6/0x1350 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [en l\u00ednea] __sys_sendmmsg+0x808/0xc90 80 __compat_sys_sendmmsg net/compat.c:656 [en l\u00ednea]"}], "id": "CVE-2021-47297", "lastModified": "2024-11-06T20:35:03.380", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-05-21T15:15:17.553", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1582a02fecffcee306663035a295e28e1c4aaaff"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/452c3ed7bf63721b07bc2238ed1261bb26027e85"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5c6d8e2f7187b8e45a18c27acb7a3885f03ee3db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9413c0abb57f70a953b1116318d6aa478013c35d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/991e634360f2622a683b48dfe44fe6d9cb765a09"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4c7797ab1517515f0d08b3bc1c6b48883889c54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d9d646acad2c3590e189bb5d5c86ab8bd8a2dfc3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ffe31dd70b70a40cd6b21b78c1713a23e021843a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: net: fix uninit-value in caif_seqpkt_sendmsg", "id": "2282487", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282487"}, "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-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: fix uninit-value in caif_seqpkt_sendmsg\nWhen nr_segs equal to zero in iovec_from_user, the object\nmsg->msg_iter.iov is uninit stack memory in caif_seqpkt_sendmsg\nwhich is defined in ___sys_sendmsg. So we cann't just judge\nmsg->msg_iter.iov->base directlly. We can use nr_segs to judge\nmsg in caif_seqpkt_sendmsg whether has data buffers.\n=====================================================\nBUG: KMSAN: uninit-value in caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542\nCall Trace:\n__dump_stack lib/dump_stack.c:77 [inline]\ndump_stack+0x1c9/0x220 lib/dump_stack.c:118\nkmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118\n__msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215\ncaif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542\nsock_sendmsg_nosec net/socket.c:652 [inline]\nsock_sendmsg net/socket.c:672 [inline]\n____sys_sendmsg+0x12b6/0x1350 net/socket.c:2343\n___sys_sendmsg net/socket.c:2397 [inline]\n__sys_sendmmsg+0x808/0xc90 net/socket.c:2480\n__compat_sys_sendmmsg net/compat.c:656 [inline]"], "name": "CVE-2021-47297", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47297\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47297\nhttps://lore.kernel.org/linux-cve-announce/2024052124-CVE-2021-47297-55b5@gregkh/T"], "threat_severity": "Low", "upstream_fix": "kernel 4.4.277, kernel 4.9.277, kernel 4.14.241, kernel 4.19.199, kernel 5.4.136, kernel 5.10.54, kernel 5.13.6, kernel 5.14"}