| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "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": "73ffa904b78287f6acf8797e040150aa26a4af4a", |
| "lessThan": "cfe560c7050bfb37b0d2491bbe7cd8b59e77fdc5", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "73ffa904b78287f6acf8797e040150aa26a4af4a", |
| "lessThan": "826af9d2f69567c646ff46d10393d47e30ad23c6", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "73ffa904b78287f6acf8797e040150aa26a4af4a", |
| "lessThan": "4d7b41c0e43995b0e992b9f8903109275744b658", |
| "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": "semver" |
| }, |
| { |
| "version": "6.6.32", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.8.11", |
| "lessThanOrEqual": "6.8.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.9", |
| "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": "3.0", |
| "versionEndExcluding": "6.6.32" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.0", |
| "versionEndExcluding": "6.8.11" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.0", |
| "versionEndExcluding": "6.9" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "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" |
| } |
| ], |
| "title": "Bluetooth: L2CAP: Fix slab-use-after-free in l2cap_connect()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-36013", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
