CVE-2022-49667

{"id": "CVE-2022-49667", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-02-26T07:01:41.687", "references": [{"url": "https://git.kernel.org/stable/c/050133e1aa2cb49bb17be847d48a4431598ef562", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2765749def4765c5052a4c66445cf4c96fcccdbc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/63b2fe509f69b90168a75e04e14573dccf7984e6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/893825289ba840afd86bfffcb6f7f363c73efff8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a853b7a3a9fd1d74a4ccdd9cd73512b7dace2f1e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b90ac60303063a43e17dd4aec159067599d255e6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ef0af7d08d26c5333ff4944a559279464edf6f15", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f162f7c348fa2a5555bafdb5cc890b89b221e69c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bonding: fix use-after-free after 802.3ad slave unbind\n\ncommit 0622cab0341c (\"bonding: fix 802.3ad aggregator reselection\"),\nresolve case, when there is several aggregation groups in the same bond.\nbond_3ad_unbind_slave will invalidate (clear) aggregator when\n__agg_active_ports return zero. So, ad_clear_agg can be executed even, when\nnum_of_ports!=0. Than bond_3ad_unbind_slave can be executed again for,\npreviously cleared aggregator. NOTE: at this time bond_3ad_unbind_slave\nwill not update slave ports list, because lag_ports==NULL. So, here we\ngot slave ports, pointing to freed aggregator memory.\n\nFix with checking actual number of ports in group (as was before\ncommit 0622cab0341c (\"bonding: fix 802.3ad aggregator reselection\") ),\nbefore ad_clear_agg().\n\nThe KASAN logs are as follows:\n\n[ 767.617392] ==================================================================\n[ 767.630776] BUG: KASAN: use-after-free in bond_3ad_state_machine_handler+0x13dc/0x1470\n[ 767.638764] Read of size 2 at addr ffff00011ba9d430 by task kworker/u8:7/767\n[ 767.647361] CPU: 3 PID: 767 Comm: kworker/u8:7 Tainted: G O 5.15.11 #15\n[ 767.655329] Hardware name: DNI AmazonGo1 A7040 board (DT)\n[ 767.660760] Workqueue: lacp_1 bond_3ad_state_machine_handler\n[ 767.666468] Call trace:\n[ 767.668930] dump_backtrace+0x0/0x2d0\n[ 767.672625] show_stack+0x24/0x30\n[ 767.675965] dump_stack_lvl+0x68/0x84\n[ 767.679659] print_address_description.constprop.0+0x74/0x2b8\n[ 767.685451] kasan_report+0x1f0/0x260\n[ 767.689148] __asan_load2+0x94/0xd0\n[ 767.692667] bond_3ad_state_machine_handler+0x13dc/0x1470"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: bonding: fix use-after-free after 802.3ad slave unbind commit 0622cab0341c (\"bonding: fix 802.3ad gregator reselection\"), resuelve el caso, cuando hay varios grupos de agregaci\u00f3n en el mismo enlace. bond_3ad_unbind_slave invalidar\u00e1 (borrar\u00e1) el agregador cuando __agg_active_ports devuelva cero. Por lo tanto, ad_clear_agg se puede ejecutar incluso, cuando num_of_ports!=0. Luego, bond_3ad_unbind_slave se puede ejecutar nuevamente para el agregador previamente borrado. NOTA: en este momento bond_3ad_unbind_slave no actualizar\u00e1 la lista de puertos esclavos, porque lag_ports==NULL. Entonces, aqu\u00ed tenemos puertos esclavos, apuntando a la memoria liberada del agregador. Correcci\u00f3n con la verificaci\u00f3n del n\u00famero real de puertos en el grupo (como era antes de el commit 0622cab0341c (\"vinculaci\u00f3n: correcci\u00f3n de la reselecci\u00f3n del agregador 802.3ad\")), antes de ad_clear_agg(). Los registros de KASAN son los siguientes: [ 767.617392] ================================================================== [ 767.630776] BUG: KASAN: use-after-free in bond_3ad_state_machine_handler+0x13dc/0x1470 [ 767.638764] Read of size 2 at addr ffff00011ba9d430 by task kworker/u8:7/767 [ 767.647361] CPU: 3 PID: 767 Comm: kworker/u8:7 Tainted: G O 5.15.11 #15 [ 767.655329] Hardware name: DNI AmazonGo1 A7040 board (DT) [ 767.660760] Workqueue: lacp_1 bond_3ad_state_machine_handler [ 767.666468] Call trace: [ 767.668930] dump_backtrace+0x0/0x2d0 [ 767.672625] show_stack+0x24/0x30 [ 767.675965] dump_stack_lvl+0x68/0x84 [ 767.679659] print_address_description.constprop.0+0x74/0x2b8 [ 767.685451] kasan_report+0x1f0/0x260 [ 767.689148] __asan_load2+0x94/0xd0 [ 767.692667] bond_3ad_state_machine_handler+0x13dc/0x1470 "}], "lastModified": "2025-03-24T19:07:43.713", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C4226359-06D5-41B1-B299-5B0357988B43", "versionEndExcluding": "4.9.322", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "73A0453B-4AA7-4F16-B8F2-4DDB2510943D", "versionEndExcluding": "4.14.287", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "83E1438F-F12B-4581-9EF4-B104DAEFFD41", "versionEndExcluding": "4.19.251", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "73056417-5BD5-453F-8EEC-2D5C48185372", "versionEndExcluding": "5.4.204", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DAAE3E52-3C60-40CA-A245-AE5660F45CD8", "versionEndExcluding": "5.10.129", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "70DCF327-F4B6-4CDB-8C9E-98E909E60127", "versionEndExcluding": "5.15.53", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8261A22B-B156-4045-AE8E-AA9E95E7930C", "versionEndExcluding": "5.18.10", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A8C30C2D-F82D-4D37-AB48-D76ABFBD5377"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF8547FC-C849-4F1B-804B-A93AE2F04A92"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F3068028-F453-4A1C-B80F-3F5609ACEF60"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2E9C0DB0-D349-489F-A3D6-B77214E93A8A"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}