CVE-2022-48759 (GCVE-0-2022-48759)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2025-05-04 08:22
VLAI?
Title
rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev
Summary
In the Linux kernel, the following vulnerability has been resolved: rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev struct rpmsg_ctrldev contains a struct cdev. The current code frees the rpmsg_ctrldev struct in rpmsg_ctrldev_release_device(), but the cdev is a managed object, therefore its release is not predictable and the rpmsg_ctrldev could be freed before the cdev is entirely released, as in the backtrace below. [ 93.625603] ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x7c [ 93.636115] WARNING: CPU: 0 PID: 12 at lib/debugobjects.c:488 debug_print_object+0x13c/0x1b0 [ 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 [ 93.715175] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.4.163-lockdep #26 [ 93.723855] Hardware name: Google Lazor (rev3 - 8) with LTE (DT) [ 93.730055] Workqueue: events kobject_delayed_cleanup [ 93.735271] pstate: 60c00009 (nZCv daif +PAN +UAO) [ 93.740216] pc : debug_print_object+0x13c/0x1b0 [ 93.744890] lr : debug_print_object+0x13c/0x1b0 [ 93.749555] sp : ffffffacf5bc7940 [ 93.752978] x29: ffffffacf5bc7940 x28: dfffffd000000000 [ 93.758448] x27: ffffffacdb11a800 x26: dfffffd000000000 [ 93.763916] x25: ffffffd0734f856c x24: dfffffd000000000 [ 93.769389] x23: 0000000000000000 x22: ffffffd0733c35b0 [ 93.774860] x21: ffffffd0751994a0 x20: ffffffd075ec27c0 [ 93.780338] x19: ffffffd075199100 x18: 00000000000276e0 [ 93.785814] x17: 0000000000000000 x16: dfffffd000000000 [ 93.791291] x15: ffffffffffffffff x14: 6e6968207473696c [ 93.796768] x13: 0000000000000000 x12: ffffffd075e2b000 [ 93.802244] x11: 0000000000000001 x10: 0000000000000000 [ 93.807723] x9 : d13400dff1921900 x8 : d13400dff1921900 [ 93.813200] x7 : 0000000000000000 x6 : 0000000000000000 [ 93.818676] x5 : 0000000000000080 x4 : 0000000000000000 [ 93.824152] x3 : ffffffd0732a0fa4 x2 : 0000000000000001 [ 93.829628] x1 : ffffffacf5bc7580 x0 : 0000000000000061 [ 93.835104] Call trace: [ 93.837644] debug_print_object+0x13c/0x1b0 [ 93.841963] __debug_check_no_obj_freed+0x25c/0x3c0 [ 93.846987] debug_check_no_obj_freed+0x18/0x20 [ 93.851669] slab_free_freelist_hook+0xbc/0x1e4 [ 93.856346] kfree+0xfc/0x2f4 [ 93.859416] rpmsg_ctrldev_release_device+0x78/0xb8 [ 93.864445] device_release+0x84/0x168 [ 93.868310] kobject_cleanup+0x12c/0x298 [ 93.872356] kobject_delayed_cleanup+0x10/0x18 [ 93.876948] process_one_work+0x578/0x92c [ 93.881086] worker_thread+0x804/0xcf8 [ 93.884963] kthread+0x2a8/0x314 [ 93.888303] ret_from_fork+0x10/0x18 The cdev_device_add/del() API was created to address this issue (see commit '233ed09d7fda ("chardev: add helper function to register char devs with a struct device")'), use it instead of cdev add/del().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c0cdc19f84a4712cf74888f83af286e3c2e14efd , < 74d85e9fbc7022a4011102c7474a9c7aeb704a35 (git)
Affected: c0cdc19f84a4712cf74888f83af286e3c2e14efd , < 70cb4295ec806b663665e1d2ed15caab6159880e (git)
Affected: c0cdc19f84a4712cf74888f83af286e3c2e14efd , < da27b834c1e0222e149e06caddf7718478086d1b (git)
Affected: c0cdc19f84a4712cf74888f83af286e3c2e14efd , < 1dbb206730f3e5ce90014ad569ddf8167ec4124a (git)
Affected: c0cdc19f84a4712cf74888f83af286e3c2e14efd , < 85aba11a8ea92a8eef2de95ebbe063086fd62d9c (git)
Affected: c0cdc19f84a4712cf74888f83af286e3c2e14efd , < d6cdc6ae542845d4d0ac8b6d99362bde7042a3c7 (git)
Affected: c0cdc19f84a4712cf74888f83af286e3c2e14efd , < b7fb2dad571d1e21173c06cef0bced77b323990a (git)
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    Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 4.14.265 , ≤ 4.14.* (semver)
Unaffected: 4.19.228 , ≤ 4.19.* (semver)
Unaffected: 5.4.176 , ≤ 5.4.* (semver)
Unaffected: 5.10.96 , ≤ 5.10.* (semver)
Unaffected: 5.15.19 , ≤ 5.15.* (semver)
Unaffected: 5.16.5 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "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 \u0027233ed09d7fda (\"chardev: add helper function to register char\ndevs with a struct device\")\u0027), use it instead of cdev add/del()."
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    "dateUpdated": "2025-05-04T08:22:30.247Z",
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\"74d85e9fbc7022a4011102c7474a9c7aeb704a35\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0cdc19f84a4712cf74888f83af286e3c2e14efd\", \"lessThan\": \"70cb4295ec806b663665e1d2ed15caab6159880e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0cdc19f84a4712cf74888f83af286e3c2e14efd\", \"lessThan\": \"da27b834c1e0222e149e06caddf7718478086d1b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0cdc19f84a4712cf74888f83af286e3c2e14efd\", \"lessThan\": \"1dbb206730f3e5ce90014ad569ddf8167ec4124a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0cdc19f84a4712cf74888f83af286e3c2e14efd\", \"lessThan\": \"85aba11a8ea92a8eef2de95ebbe063086fd62d9c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0cdc19f84a4712cf74888f83af286e3c2e14efd\", \"lessThan\": \"d6cdc6ae542845d4d0ac8b6d99362bde7042a3c7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0cdc19f84a4712cf74888f83af286e3c2e14efd\", \"lessThan\": \"b7fb2dad571d1e21173c06cef0bced77b323990a\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/rpmsg/rpmsg_char.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.14.265\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.228\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.176\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.96\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/rpmsg/rpmsg_char.c\"], \"defaultStatus\": \"affected\"}], \"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\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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 \u0027233ed09d7fda (\\\"chardev: add helper function to register char\\ndevs with a struct device\\\")\u0027), use it instead of cdev add/del().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.265\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.228\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.176\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.96\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.19\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.5\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"4.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:22:30.247Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48759\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:22:30.247Z\", \"dateReserved\": \"2024-06-20T11:09:39.059Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-20T11:13:37.872Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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Nomenclature

  • 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.