{ "containers": { "cna": { "providerMetadata": { "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev\n\nstruct rpmsg_ctrldev contains a struct cdev. The current code frees\nthe rpmsg_ctrldev struct in rpmsg_ctrldev_release_device(), but the\ncdev is a managed object, therefore its release is not predictable\nand the rpmsg_ctrldev could be freed before the cdev is entirely\nreleased, as in the backtrace below.\n\n[ 93.625603] ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x7c\n[ 93.636115] WARNING: CPU: 0 PID: 12 at lib/debugobjects.c:488 debug_print_object+0x13c/0x1b0\n[ 93.644799] Modules linked in: veth xt_cgroup xt_MASQUERADE rfcomm algif_hash algif_skcipher af_alg uinput ip6table_nat fuse uvcvideo videobuf2_vmalloc venus_enc venus_dec videobuf2_dma_contig hci_uart btandroid btqca snd_soc_rt5682_i2c bluetooth qcom_spmi_temp_alarm snd_soc_rt5682v\n[ 93.715175] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.4.163-lockdep #26\n[ 93.723855] Hardware name: Google Lazor (rev3 - 8) with LTE (DT)\n[ 93.730055] Workqueue: events kobject_delayed_cleanup\n[ 93.735271] pstate: 60c00009 (nZCv daif +PAN +UAO)\n[ 93.740216] pc : debug_print_object+0x13c/0x1b0\n[ 93.744890] lr : debug_print_object+0x13c/0x1b0\n[ 93.749555] sp : ffffffacf5bc7940\n[ 93.752978] x29: ffffffacf5bc7940 x28: dfffffd000000000\n[ 93.758448] x27: ffffffacdb11a800 x26: dfffffd000000000\n[ 93.763916] x25: ffffffd0734f856c x24: dfffffd000000000\n[ 93.769389] x23: 0000000000000000 x22: ffffffd0733c35b0\n[ 93.774860] x21: ffffffd0751994a0 x20: ffffffd075ec27c0\n[ 93.780338] x19: ffffffd075199100 x18: 00000000000276e0\n[ 93.785814] x17: 0000000000000000 x16: dfffffd000000000\n[ 93.791291] x15: ffffffffffffffff x14: 6e6968207473696c\n[ 93.796768] x13: 0000000000000000 x12: ffffffd075e2b000\n[ 93.802244] x11: 0000000000000001 x10: 0000000000000000\n[ 93.807723] x9 : d13400dff1921900 x8 : d13400dff1921900\n[ 93.813200] x7 : 0000000000000000 x6 : 0000000000000000\n[ 93.818676] x5 : 0000000000000080 x4 : 0000000000000000\n[ 93.824152] x3 : ffffffd0732a0fa4 x2 : 0000000000000001\n[ 93.829628] x1 : ffffffacf5bc7580 x0 : 0000000000000061\n[ 93.835104] Call trace:\n[ 93.837644] debug_print_object+0x13c/0x1b0\n[ 93.841963] __debug_check_no_obj_freed+0x25c/0x3c0\n[ 93.846987] debug_check_no_obj_freed+0x18/0x20\n[ 93.851669] slab_free_freelist_hook+0xbc/0x1e4\n[ 93.856346] kfree+0xfc/0x2f4\n[ 93.859416] rpmsg_ctrldev_release_device+0x78/0xb8\n[ 93.864445] device_release+0x84/0x168\n[ 93.868310] kobject_cleanup+0x12c/0x298\n[ 93.872356] kobject_delayed_cleanup+0x10/0x18\n[ 93.876948] process_one_work+0x578/0x92c\n[ 93.881086] worker_thread+0x804/0xcf8\n[ 93.884963] kthread+0x2a8/0x314\n[ 93.888303] ret_from_fork+0x10/0x18\n\nThe cdev_device_add/del() API was created to address this issue (see\ncommit '233ed09d7fda (\"chardev: add helper function to register char\ndevs with a struct device\")'), use it instead of cdev add/del()." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/rpmsg/rpmsg_char.c" ], "versions": [ { "version": "c0cdc19f84a4", "lessThan": "74d85e9fbc70", "status": "affected", "versionType": "git" }, { "version": "c0cdc19f84a4", "lessThan": "70cb4295ec80", "status": "affected", "versionType": "git" }, { "version": "c0cdc19f84a4", "lessThan": "da27b834c1e0", "status": "affected", "versionType": "git" }, { "version": "c0cdc19f84a4", "lessThan": "1dbb206730f3", "status": "affected", "versionType": "git" }, { "version": "c0cdc19f84a4", "lessThan": "85aba11a8ea9", "status": "affected", "versionType": "git" }, { "version": "c0cdc19f84a4", "lessThan": "d6cdc6ae5428", "status": "affected", "versionType": "git" }, { "version": "c0cdc19f84a4", "lessThan": "b7fb2dad571d", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/rpmsg/rpmsg_char.c" ], "versions": [ { "version": "4.11", "status": "affected" }, { "version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "custom" }, { "version": "4.14.265", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.228", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.176", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.96", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.19", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.16.5", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/74d85e9fbc7022a4011102c7474a9c7aeb704a35" }, { "url": "https://git.kernel.org/stable/c/70cb4295ec806b663665e1d2ed15caab6159880e" }, { "url": "https://git.kernel.org/stable/c/da27b834c1e0222e149e06caddf7718478086d1b" }, { "url": "https://git.kernel.org/stable/c/1dbb206730f3e5ce90014ad569ddf8167ec4124a" }, { "url": "https://git.kernel.org/stable/c/85aba11a8ea92a8eef2de95ebbe063086fd62d9c" }, { "url": "https://git.kernel.org/stable/c/d6cdc6ae542845d4d0ac8b6d99362bde7042a3c7" }, { "url": "https://git.kernel.org/stable/c/b7fb2dad571d1e21173c06cef0bced77b323990a" } ], "title": "rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev", "x_generator": { "engine": "bippy-7d53e8ef8be4" } } }, "cveMetadata": { "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", "cveID": "CVE-2022-48759", "requesterUserId": "gregkh@kernel.org", "serial": "1", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.0" }