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CVE-2022-49667 (GCVE-0-2022-49667)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2026-08-05 08:55
VLAI
Title
net: bonding: fix use-after-free after 802.3ad slave unbind
Summary
In the Linux kernel, the following vulnerability has been resolved: net: bonding: fix use-after-free after 802.3ad slave unbind commit 0622cab0341c ("bonding: fix 802.3ad aggregator reselection"), resolve case, when there is several aggregation groups in the same bond. bond_3ad_unbind_slave will invalidate (clear) aggregator when __agg_active_ports return zero. So, ad_clear_agg can be executed even, when num_of_ports!=0. Than bond_3ad_unbind_slave can be executed again for, previously cleared aggregator. NOTE: at this time bond_3ad_unbind_slave will not update slave ports list, because lag_ports==NULL. So, here we got slave ports, pointing to freed aggregator memory. Fix with checking actual number of ports in group (as was before commit 0622cab0341c ("bonding: fix 802.3ad aggregator reselection") ), before ad_clear_agg(). The KASAN logs are as follows: [ 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
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 18:15 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0622cab0341cac6b30da177b0faa39fae0680e71 , < a853b7a3a9fd1d74a4ccdd9cd73512b7dace2f1e (git)
Affected: 0622cab0341cac6b30da177b0faa39fae0680e71 , < b90ac60303063a43e17dd4aec159067599d255e6 (git)
Affected: 0622cab0341cac6b30da177b0faa39fae0680e71 , < f162f7c348fa2a5555bafdb5cc890b89b221e69c (git)
Affected: 0622cab0341cac6b30da177b0faa39fae0680e71 , < 893825289ba840afd86bfffcb6f7f363c73efff8 (git)
Affected: 0622cab0341cac6b30da177b0faa39fae0680e71 , < 63b2fe509f69b90168a75e04e14573dccf7984e6 (git)
Affected: 0622cab0341cac6b30da177b0faa39fae0680e71 , < ef0af7d08d26c5333ff4944a559279464edf6f15 (git)
Affected: 0622cab0341cac6b30da177b0faa39fae0680e71 , < 2765749def4765c5052a4c66445cf4c96fcccdbc (git)
Affected: 0622cab0341cac6b30da177b0faa39fae0680e71 , < 050133e1aa2cb49bb17be847d48a4431598ef562 (git)
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Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 4.9.322 , ≤ 4.9.* (semver)
Unaffected: 4.14.287 , ≤ 4.14.* (semver)
Unaffected: 4.19.251 , ≤ 4.19.* (semver)
Unaffected: 5.4.204 , ≤ 5.4.* (semver)
Unaffected: 5.10.129 , ≤ 5.10.* (semver)
Unaffected: 5.15.53 , ≤ 5.15.* (semver)
Unaffected: 5.18.10 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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          "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"
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              "value": "AV:L - The UAF is triggered by bond slave release (SIOCBONDRELEASE/rtnetlink ndo_del_slave \u2192 bond_3ad_unbind_slave), which requires local netlink/ioctl access; LACPDU traffic alone cannot unbind slaves.\nAC:L - An attacker who can manage the bond fully controls the trigger sequence\u2014create an 802.3ad bond, form multi-port aggregators via crafted LACPDUs on veth peers, force ports inactive, then unbind slaves\u2014so success does not depend on external timing or state.\nPR:L - Creating bonds, enslaving/releasing veth/dummy slaves, and related netlink ops only need CAP_NET_ADMIN in the network namespace\u2019s user_ns (ns_capable), which an unprivileged user obtains via user+net namespaces.\nUI:N - Exploitation is entirely attacker-driven through local namespace and interface operations; no separate victim action is required.\nS:U - Impact is kernel memory corruption and privilege escalation within the same host kernel authority, with no VM/IOMMU or cross-boundary escape.\nC:H - Use-after-free of heap-allocated struct ad_slave_info/aggregator lets an attacker reclaim and control the freed object, enabling arbitrary kernel reads.\nI:H - The same UAF is exploitable for heap spray and arbitrary write / control-flow hijacking in kernel context.\nA:H - The dangling aggregator pointer is dereferenced by bond_3ad_state_machine_handler (KASAN-confirmed), causing kernel oops/panic even without full exploitation."
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      "title": "net: bonding: fix use-after-free after 802.3ad slave unbind",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49667",
    "datePublished": "2025-02-26T02:24:01.818Z",
    "dateReserved": "2025-02-26T02:21:30.436Z",
    "dateUpdated": "2026-08-05T08:55:58.300Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49667",
      "date": "2026-09-17",
      "epss": "0.00289",
      "percentile": "0.21566"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49667\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:41.687\",\"lastModified\":\"2026-06-17T05:18:47.747\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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 \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/bonding/bond_3ad.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0622cab0341cac6b30da177b0faa39fae0680e71\",\"lessThan\":\"a853b7a3a9fd1d74a4ccdd9cd73512b7dace2f1e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0622cab0341cac6b30da177b0faa39fae0680e71\",\"lessThan\":\"b90ac60303063a43e17dd4aec159067599d255e6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0622cab0341cac6b30da177b0faa39fae0680e71\",\"lessThan\":\"f162f7c348fa2a5555bafdb5cc890b89b221e69c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0622cab0341cac6b30da177b0faa39fae0680e71\",\"lessThan\":\"893825289ba840afd86bfffcb6f7f363c73efff8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0622cab0341cac6b30da177b0faa39fae0680e71\",\"lessThan\":\"63b2fe509f69b90168a75e04e14573dccf7984e6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0622cab0341cac6b30da177b0faa39fae0680e71\",\"lessThan\":\"ef0af7d08d26c5333ff4944a559279464edf6f15\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0622cab0341cac6b30da177b0faa39fae0680e71\",\"lessThan\":\"2765749def4765c5052a4c66445cf4c96fcccdbc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0622cab0341cac6b30da177b0faa39fae0680e71\",\"lessThan\":\"050133e1aa2cb49bb17be847d48a4431598ef562\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/bonding/bond_3ad.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.9.322\",\"lessThanOrEqual\":\"4.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.287\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.251\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.204\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.129\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.53\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18.10\",\"lessThanOrEqual\":\"5.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-02-27T18:15:14.271545Z\",\"id\":\"CVE-2022-49667\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.7\",\"versionEndExcluding\":\"4.9.322\",\"matchCriteriaId\":\"C4226359-06D5-41B1-B299-5B0357988B43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.287\",\"matchCriteriaId\":\"73A0453B-4AA7-4F16-B8F2-4DDB2510943D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.251\",\"matchCriteriaId\":\"83E1438F-F12B-4581-9EF4-B104DAEFFD41\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.204\",\"matchCriteriaId\":\"73056417-5BD5-453F-8EEC-2D5C48185372\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.129\",\"matchCriteriaId\":\"DAAE3E52-3C60-40CA-A245-AE5660F45CD8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.53\",\"matchCriteriaId\":\"70DCF327-F4B6-4CDB-8C9E-98E909E60127\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.18.10\",\"matchCriteriaId\":\"8261A22B-B156-4045-AE8E-AA9E95E7930C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"A8C30C2D-F82D-4D37-AB48-D76ABFBD5377\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"BF8547FC-C849-4F1B-804B-A93AE2F04A92\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F3068028-F453-4A1C-B80F-3F5609ACEF60\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"2E9C0DB0-D349-489F-A3D6-B77214E93A8A\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/050133e1aa2cb49bb17be847d48a4431598ef562\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2765749def4765c5052a4c66445cf4c96fcccdbc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/63b2fe509f69b90168a75e04e14573dccf7984e6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/893825289ba840afd86bfffcb6f7f363c73efff8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a853b7a3a9fd1d74a4ccdd9cd73512b7dace2f1e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b90ac60303063a43e17dd4aec159067599d255e6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ef0af7d08d26c5333ff4944a559279464edf6f15\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f162f7c348fa2a5555bafdb5cc890b89b221e69c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:14:46+00:00",
      "cve": "CVE-2022-49667",
      "id": "CVE-2022-49667",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "164",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: bonding: fix use-after-free after 802.3ad slave unbind",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49667.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:26:24Z",
      "cve": "CVE-2022-49667",
      "id": "CVE-2022-49667",
      "initial_release_date": "2025-02-27T03:03:11Z",
      "product_status:known_affected": "540",
      "product_status:known_not_affected": "147",
      "product_status:recommended": "263",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49667",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49667.json",
      "version": "54"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"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\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49667\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T18:15:14.271545Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T18:15:15.681Z\"}}], \"cna\": {\"title\": \"net: bonding: fix use-after-free after 802.3ad slave unbind\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0622cab0341cac6b30da177b0faa39fae0680e71\", \"lessThan\": \"a853b7a3a9fd1d74a4ccdd9cd73512b7dace2f1e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0622cab0341cac6b30da177b0faa39fae0680e71\", \"lessThan\": \"b90ac60303063a43e17dd4aec159067599d255e6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0622cab0341cac6b30da177b0faa39fae0680e71\", \"lessThan\": \"f162f7c348fa2a5555bafdb5cc890b89b221e69c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0622cab0341cac6b30da177b0faa39fae0680e71\", \"lessThan\": \"893825289ba840afd86bfffcb6f7f363c73efff8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0622cab0341cac6b30da177b0faa39fae0680e71\", \"lessThan\": \"63b2fe509f69b90168a75e04e14573dccf7984e6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0622cab0341cac6b30da177b0faa39fae0680e71\", \"lessThan\": \"ef0af7d08d26c5333ff4944a559279464edf6f15\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0622cab0341cac6b30da177b0faa39fae0680e71\", \"lessThan\": \"2765749def4765c5052a4c66445cf4c96fcccdbc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0622cab0341cac6b30da177b0faa39fae0680e71\", \"lessThan\": \"050133e1aa2cb49bb17be847d48a4431598ef562\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/bonding/bond_3ad.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.9.322\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.287\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.251\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.204\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.129\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.53\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/bonding/bond_3ad.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a853b7a3a9fd1d74a4ccdd9cd73512b7dace2f1e\"}, {\"url\": \"https://git.kernel.org/stable/c/b90ac60303063a43e17dd4aec159067599d255e6\"}, {\"url\": \"https://git.kernel.org/stable/c/f162f7c348fa2a5555bafdb5cc890b89b221e69c\"}, {\"url\": \"https://git.kernel.org/stable/c/893825289ba840afd86bfffcb6f7f363c73efff8\"}, {\"url\": \"https://git.kernel.org/stable/c/63b2fe509f69b90168a75e04e14573dccf7984e6\"}, {\"url\": \"https://git.kernel.org/stable/c/ef0af7d08d26c5333ff4944a559279464edf6f15\"}, {\"url\": \"https://git.kernel.org/stable/c/2765749def4765c5052a4c66445cf4c96fcccdbc\"}, {\"url\": \"https://git.kernel.org/stable/c/050133e1aa2cb49bb17be847d48a4431598ef562\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.322\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.287\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.251\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.204\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.129\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.53\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.10\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"4.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:42:54.979Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49667\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:42:54.979Z\", \"dateReserved\": \"2025-02-26T02:21:30.436Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:24:01.818Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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