{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-36013", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.153Z", "datePublished": "2024-05-23T07:03:07.571Z", "dateUpdated": "2024-08-02T03:30:11.584Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:32:57.788Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix slab-use-after-free in l2cap_connect()\n\nExtend a critical section to prevent chan from early freeing.\nAlso make the l2cap_connect() return type void. Nothing is using the\nreturned value but it is ugly to return a potentially freed pointer.\nMaking it void will help with backports because earlier kernels did use\nthe return value. Now the compile will break for kernels where this\npatch is not a complete fix.\n\nCall stack summary:\n\n[use]\nl2cap_bredr_sig_cmd\n l2cap_connect\n ┌ mutex_lock(&conn->chan_lock);\n │ chan = pchan->ops->new_connection(pchan); <- alloc chan\n │ __l2cap_chan_add(conn, chan);\n │ l2cap_chan_hold(chan);\n │ list_add(&chan->list, &conn->chan_l); ... (1)\n └ mutex_unlock(&conn->chan_lock);\n chan->conf_state ... (4) <- use after free\n\n[free]\nl2cap_conn_del\n┌ mutex_lock(&conn->chan_lock);\n│ foreach chan in conn->chan_l: ... (2)\n│ l2cap_chan_put(chan);\n│ l2cap_chan_destroy\n│ kfree(chan) ... (3) <- chan freed\n└ mutex_unlock(&conn->chan_lock);\n\n==================================================================\nBUG: KASAN: slab-use-after-free in instrument_atomic_read\ninclude/linux/instrumented.h:68 [inline]\nBUG: KASAN: slab-use-after-free in _test_bit\ninclude/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]\nBUG: KASAN: slab-use-after-free in l2cap_connect+0xa67/0x11a0\nnet/bluetooth/l2cap_core.c:4260\nRead of size 8 at addr ffff88810bf040a0 by task kworker/u3:1/311" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/l2cap_core.c" ], "versions": [ { "version": "73ffa904b782", "lessThan": "cfe560c7050b", "status": "affected", "versionType": "git" }, { "version": "73ffa904b782", "lessThan": "826af9d2f695", "status": "affected", "versionType": "git" }, { "version": "73ffa904b782", "lessThan": "4d7b41c0e439", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/l2cap_core.c" ], "versions": [ { "version": "3.0", "status": "affected" }, { "version": "0", "lessThan": "3.0", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.32", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.11", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/cfe560c7050bfb37b0d2491bbe7cd8b59e77fdc5" }, { "url": "https://git.kernel.org/stable/c/826af9d2f69567c646ff46d10393d47e30ad23c6" }, { "url": "https://git.kernel.org/stable/c/4d7b41c0e43995b0e992b9f8903109275744b658" }, { "url": "http://www.openwall.com/lists/oss-security/2024/05/30/2" }, { "url": "http://www.openwall.com/lists/oss-security/2024/05/30/1" } ], "title": "Bluetooth: L2CAP: Fix slab-use-after-free in l2cap_connect()", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-36013", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2024-05-23T16:10:59.613631Z" } } } ], "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": "2024-06-04T17:47:42.167Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:30:11.584Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/cfe560c7050bfb37b0d2491bbe7cd8b59e77fdc5", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/826af9d2f69567c646ff46d10393d47e30ad23c6", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4d7b41c0e43995b0e992b9f8903109275744b658", "tags": [ "x_transferred" ] }, { "url": "http://www.openwall.com/lists/oss-security/2024/05/30/2", "tags": [ "x_transferred" ] }, { "url": "http://www.openwall.com/lists/oss-security/2024/05/30/1", "tags": [ "x_transferred" ] } ] } ] }, "dataVersion": "5.1" }