CVE-2022-49837

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-49837", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-01T14:05:17.229Z", "datePublished": "2025-05-01T14:09:54.141Z", "dateUpdated": "2026-05-11T19:07:44.113Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:07:44.113Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix memory leaks in __check_func_call\n\nkmemleak reports this issue:\n\nunreferenced object 0xffff88817139d000 (size 2048):\n comm \"test_progs\", pid 33246, jiffies 4307381979 (age 45851.820s)\n hex dump (first 32 bytes):\n 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [<0000000045f075f0>] kmalloc_trace+0x27/0xa0\n [<0000000098b7c90a>] __check_func_call+0x316/0x1230\n [<00000000b4c3c403>] check_helper_call+0x172e/0x4700\n [<00000000aa3875b7>] do_check+0x21d8/0x45e0\n [<000000001147357b>] do_check_common+0x767/0xaf0\n [<00000000b5a595b4>] bpf_check+0x43e3/0x5bc0\n [<0000000011e391b1>] bpf_prog_load+0xf26/0x1940\n [<0000000007f765c0>] __sys_bpf+0xd2c/0x3650\n [<00000000839815d6>] __x64_sys_bpf+0x75/0xc0\n [<00000000946ee250>] do_syscall_64+0x3b/0x90\n [<0000000000506b7f>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe root case here is: In function prepare_func_exit(), the callee is\nnot released in the abnormal scenario after \"state->curframe--;\". To\nfix, move \"state->curframe--;\" to the very bottom of the function,\nright when we free callee and reset frame[] pointer to NULL, as Andrii\nsuggested.\n\nIn addition, function __check_func_call() has a similar problem. In\nthe abnormal scenario before \"state->curframe++;\", the callee also\nshould be released by free_func_state()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/verifier.c"], "versions": [{"version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", "lessThan": "d4944497827a3d14bc5a26dbcfb7433eb5a956c0", "status": "affected", "versionType": "git"}, {"version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", "lessThan": "83946d772e756734a900ef99dbe0aeda506adf37", "status": "affected", "versionType": "git"}, {"version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", "lessThan": "eb86559a691cea5fa63e57a03ec3dc9c31e97955", "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/bpf/verifier.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.80", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.10", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "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": "4.20", "versionEndExcluding": "5.15.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d4944497827a3d14bc5a26dbcfb7433eb5a956c0"}, {"url": "https://git.kernel.org/stable/c/83946d772e756734a900ef99dbe0aeda506adf37"}, {"url": "https://git.kernel.org/stable/c/eb86559a691cea5fa63e57a03ec3dc9c31e97955"}], "title": "bpf: Fix memory leaks in __check_func_call", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-401", "lang": "en", "description": "CWE-401 Missing Release of Memory after Effective Lifetime"}]}], "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": {"timestamp": "2025-10-01T17:02:23.476033Z", "id": "CVE-2022-49837", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T17:02:27.099Z"}}]}}

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To\nfix, move \"state->curframe--;\" to the very bottom of the function,\nright when we free callee and reset frame[] pointer to NULL, as Andrii\nsuggested.\n\nIn addition, function __check_func_call() has a similar problem. In\nthe abnormal scenario before \"state->curframe++;\", the callee also\nshould be released by free_func_state()."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.80", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.0.10", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1", "versionStartIncluding": "4.20"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:46:34.749Z"}}}, "cveMetadata": {"cveId": "CVE-2022-49837", "state": "PUBLISHED", "dateUpdated": "2025-10-01T17:02:27.099Z", "dateReserved": "2025-05-01T14:05:17.229Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-05-01T14:09:54.141Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/verifier.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d4944497827a3d14bc5a26dbcfb7433eb5a956c0", "status": "affected", "version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", "versionType": "git"}, {"lessThan": "83946d772e756734a900ef99dbe0aeda506adf37", "status": "affected", "version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", "versionType": "git"}, {"lessThan": "eb86559a691cea5fa63e57a03ec3dc9c31e97955", "status": "affected", "version": "fd978bf7fd312581a7ca454a991f0ffb34c4204b", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/verifier.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.20"}, {"lessThan": "4.20", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.80", "versionType": "semver"}, {"lessThanOrEqual": "6.0.*", "status": "unaffected", "version": "6.0.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "19E8FB68-6A3C-43C9-82F9-900E6D4954AC", "versionEndExcluding": "5.15.80", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "64F9ADD1-3ADB-4D66-A00F-4A83010B05F0", "versionEndExcluding": "6.0.10", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix memory leaks in __check_func_call\n\nkmemleak reports this issue:\n\nunreferenced object 0xffff88817139d000 (size 2048):\n comm \"test_progs\", pid 33246, jiffies 4307381979 (age 45851.820s)\n hex dump (first 32 bytes):\n 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [<0000000045f075f0>] kmalloc_trace+0x27/0xa0\n [<0000000098b7c90a>] __check_func_call+0x316/0x1230\n [<00000000b4c3c403>] check_helper_call+0x172e/0x4700\n [<00000000aa3875b7>] do_check+0x21d8/0x45e0\n [<000000001147357b>] do_check_common+0x767/0xaf0\n [<00000000b5a595b4>] bpf_check+0x43e3/0x5bc0\n [<0000000011e391b1>] bpf_prog_load+0xf26/0x1940\n [<0000000007f765c0>] __sys_bpf+0xd2c/0x3650\n [<00000000839815d6>] __x64_sys_bpf+0x75/0xc0\n [<00000000946ee250>] do_syscall_64+0x3b/0x90\n [<0000000000506b7f>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe root case here is: In function prepare_func_exit(), the callee is\nnot released in the abnormal scenario after \"state->curframe--;\". To\nfix, move \"state->curframe--;\" to the very bottom of the function,\nright when we free callee and reset frame[] pointer to NULL, as Andrii\nsuggested.\n\nIn addition, function __check_func_call() has a similar problem. In\nthe abnormal scenario before \"state->curframe++;\", the callee also\nshould be released by free_func_state()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Se corrigen fugas de memoria en __check_func_call kmemleak informa de este problema: objeto sin referencia 0xffff88817139d000 (tama\u00f1o 2048): comm \"test_progs\", pid 33246, jiffies 4307381979 (edad 45851.820s) volcado hexadecimal (primeros 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [&lt;0000000045f075f0&gt;] kmalloc_trace+0x27/0xa0 [&lt;0000000098b7c90a&gt;] __check_func_call+0x316/0x1230 [&lt;00000000b4c3c403&gt;] check_helper_call+0x172e/0x4700 [&lt;00000000aa3875b7&gt;] do_check+0x21d8/0x45e0 [&lt;000000001147357b&gt;] do_check_common+0x767/0xaf0 [&lt;00000000b5a595b4&gt;] bpf_check+0x43e3/0x5bc0 [&lt;0000000011e391b1&gt;] bpf_prog_load+0xf26/0x1940 [&lt;0000000007f765c0&gt;] __sys_bpf+0xd2c/0x3650 [&lt;00000000839815d6&gt;] __x64_sys_bpf+0x75/0xc0 [&lt;00000000946ee250&gt;] do_syscall_64+0x3b/0x90 [&lt;0000000000506b7f&gt;] entry_SYSCALL_64_after_hwframe+0x63/0xcd El caso ra\u00edz aqu\u00ed es: En la funci\u00f3n prepare_func_exit(), el llamado no se libera en el escenario anormal despu\u00e9s de \"state-&gt;curframe--;\". Para solucionarlo, mueva \"state-&gt;curframe--;\" al final de la funci\u00f3n, justo cuando liberamos al destinatario y restablecemos el puntero frame[] a NULL, como sugiri\u00f3 Andrii. Adem\u00e1s, la funci\u00f3n __check_func_call() presenta un problema similar. En el escenario anormal anterior a \"state-&gt;curframe++;\", el destinatario tambi\u00e9n deber\u00eda ser liberado por free_func_state()."}], "id": "CVE-2022-49837", "lastModified": "2026-06-17T05:19:15.730", "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"}, {"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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-49837", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T17:02:23.476033Z", "version": "2.0.3"}}]}, "published": "2025-05-01T15:16:07.187", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/83946d772e756734a900ef99dbe0aeda506adf37"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d4944497827a3d14bc5a26dbcfb7433eb5a956c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb86559a691cea5fa63e57a03ec3dc9c31e97955"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-401"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:6583", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}, {"advisory": "RHSA-2023:6583", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}], "bugzilla": {"description": "kernel: bpf: Fix memory leaks in __check_func_call", "id": "2363505", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363505"}, "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-401", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Fix memory leaks in __check_func_call\nkmemleak reports this issue:\nunreferenced object 0xffff88817139d000 (size 2048):\ncomm \"test_progs\", pid 33246, jiffies 4307381979 (age 45851.820s)\nhex dump (first 32 bytes):\n01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\nbacktrace:\n[<0000000045f075f0>] kmalloc_trace+0x27/0xa0\n[<0000000098b7c90a>] __check_func_call+0x316/0x1230\n[<00000000b4c3c403>] check_helper_call+0x172e/0x4700\n[<00000000aa3875b7>] do_check+0x21d8/0x45e0\n[<000000001147357b>] do_check_common+0x767/0xaf0\n[<00000000b5a595b4>] bpf_check+0x43e3/0x5bc0\n[<0000000011e391b1>] bpf_prog_load+0xf26/0x1940\n[<0000000007f765c0>] __sys_bpf+0xd2c/0x3650\n[<00000000839815d6>] __x64_sys_bpf+0x75/0xc0\n[<00000000946ee250>] do_syscall_64+0x3b/0x90\n[<0000000000506b7f>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\nThe root case here is: In function prepare_func_exit(), the callee is\nnot released in the abnormal scenario after \"state->curframe--;\". To\nfix, move \"state->curframe--;\" to the very bottom of the function,\nright when we free callee and reset frame[] pointer to NULL, as Andrii\nsuggested.\nIn addition, function __check_func_call() has a similar problem. In\nthe abnormal scenario before \"state->curframe++;\", the callee also\nshould be released by free_func_state()."], "name": "CVE-2022-49837", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49837\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49837\nhttps://lore.kernel.org/linux-cve-announce/2025050139-CVE-2022-49837-c13b@gregkh/T"], "threat_severity": "Moderate"}

{}