CVE-2022-50178 (GCVE-0-2022-50178)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:03 – Updated: 2025-06-18 11:03
VLAI?
Title
wifi: rtw89: 8852a: rfk: fix div 0 exception
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: 8852a: rfk: fix div 0 exception The DPK is a kind of RF calibration whose algorithm is to fine tune parameters and calibrate, and check the result. If the result isn't good enough, it could adjust parameters and try again. This issue is to read and show the result, but it could be a negative calibration result that causes divisor 0 and core dump. So, fix it by phy_div() that does division only if divisor isn't zero; otherwise, zero is adopted. divide error: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 728 Comm: wpa_supplicant Not tainted 5.10.114-16019-g462a1661811a #1 <HASH:d024 28> RIP: 0010:rtw8852a_dpk+0x14ae/0x288f [rtw89_core] RSP: 0018:ffffa9bb412a7520 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000000180fc RDI: ffffa141d01023c0 RBP: ffffa9bb412a76a0 R08: 0000000000001319 R09: 00000000ffffff92 R10: ffffffffc0292de3 R11: ffffffffc00d2f51 R12: 0000000000000000 R13: ffffa141d01023c0 R14: ffffffffc0290250 R15: ffffa141d0102638 FS: 00007fa99f5c2740(0000) GS:ffffa142e5e80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000013e8e010 CR3: 0000000110d2c000 CR4: 0000000000750ee0 PKRU: 55555554 Call Trace: rtw89_core_sta_add+0x95/0x9c [rtw89_core <HASH:d239 29>] rtw89_ops_sta_state+0x5d/0x108 [rtw89_core <HASH:d239 29>] drv_sta_state+0x115/0x66f [mac80211 <HASH:81fe 30>] sta_info_insert_rcu+0x45c/0x713 [mac80211 <HASH:81fe 30>] sta_info_insert+0xf/0x1b [mac80211 <HASH:81fe 30>] ieee80211_prep_connection+0x9d6/0xb0c [mac80211 <HASH:81fe 30>] ieee80211_mgd_auth+0x2aa/0x352 [mac80211 <HASH:81fe 30>] cfg80211_mlme_auth+0x160/0x1f6 [cfg80211 <HASH:00cd 31>] nl80211_authenticate+0x2e5/0x306 [cfg80211 <HASH:00cd 31>] genl_rcv_msg+0x371/0x3a1 ? nl80211_stop_sched_scan+0xe5/0xe5 [cfg80211 <HASH:00cd 31>] ? genl_rcv+0x36/0x36 netlink_rcv_skb+0x8a/0xf9 genl_rcv+0x28/0x36 netlink_unicast+0x27b/0x3a0 netlink_sendmsg+0x2aa/0x469 sock_sendmsg_nosec+0x49/0x4d ____sys_sendmsg+0xe5/0x213 __sys_sendmsg+0xec/0x157 ? syscall_enter_from_user_mode+0xd7/0x116 do_syscall_64+0x43/0x55 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fa99f6e689b
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd , < 065e83ac83c0c0e615b96947145c85c4bd76c09a (git)
Affected: e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd , < 5abc81a138f873ab55223ec674afc3a3f945d60f (git)
Affected: e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd , < 683a4647a7a3044868cfdc14c117525091b9fa0c (git)
Create a notification for this product.
    Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 5.18.18 , ≤ 5.18.* (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/rtw8852a_rfk.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "065e83ac83c0c0e615b96947145c85c4bd76c09a",
              "status": "affected",
              "version": "e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd",
              "versionType": "git"
            },
            {
              "lessThan": "5abc81a138f873ab55223ec674afc3a3f945d60f",
              "status": "affected",
              "version": "e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd",
              "versionType": "git"
            },
            {
              "lessThan": "683a4647a7a3044868cfdc14c117525091b9fa0c",
              "status": "affected",
              "version": "e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/rtw8852a_rfk.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.18",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.2",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: 8852a: rfk: fix div 0 exception\n\nThe DPK is a kind of RF calibration whose algorithm is to fine tune\nparameters and calibrate, and check the result. If the result isn\u0027t good\nenough, it could adjust parameters and try again.\n\nThis issue is to read and show the result, but it could be a negative\ncalibration result that causes divisor 0 and core dump. So, fix it by\nphy_div() that does division only if divisor isn\u0027t zero; otherwise,\nzero is adopted.\n\n  divide error: 0000 [#1] PREEMPT SMP NOPTI\n  CPU: 1 PID: 728 Comm: wpa_supplicant Not tainted 5.10.114-16019-g462a1661811a #1 \u003cHASH:d024 28\u003e\n  RIP: 0010:rtw8852a_dpk+0x14ae/0x288f [rtw89_core]\n  RSP: 0018:ffffa9bb412a7520 EFLAGS: 00010246\n  RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n  RDX: 0000000000000000 RSI: 00000000000180fc RDI: ffffa141d01023c0\n  RBP: ffffa9bb412a76a0 R08: 0000000000001319 R09: 00000000ffffff92\n  R10: ffffffffc0292de3 R11: ffffffffc00d2f51 R12: 0000000000000000\n  R13: ffffa141d01023c0 R14: ffffffffc0290250 R15: ffffa141d0102638\n  FS:  00007fa99f5c2740(0000) GS:ffffa142e5e80000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 0000000013e8e010 CR3: 0000000110d2c000 CR4: 0000000000750ee0\n  PKRU: 55555554\n  Call Trace:\n   rtw89_core_sta_add+0x95/0x9c [rtw89_core \u003cHASH:d239 29\u003e]\n   rtw89_ops_sta_state+0x5d/0x108 [rtw89_core \u003cHASH:d239 29\u003e]\n   drv_sta_state+0x115/0x66f [mac80211 \u003cHASH:81fe 30\u003e]\n   sta_info_insert_rcu+0x45c/0x713 [mac80211 \u003cHASH:81fe 30\u003e]\n   sta_info_insert+0xf/0x1b [mac80211 \u003cHASH:81fe 30\u003e]\n   ieee80211_prep_connection+0x9d6/0xb0c [mac80211 \u003cHASH:81fe 30\u003e]\n   ieee80211_mgd_auth+0x2aa/0x352 [mac80211 \u003cHASH:81fe 30\u003e]\n   cfg80211_mlme_auth+0x160/0x1f6 [cfg80211 \u003cHASH:00cd 31\u003e]\n   nl80211_authenticate+0x2e5/0x306 [cfg80211 \u003cHASH:00cd 31\u003e]\n   genl_rcv_msg+0x371/0x3a1\n   ? nl80211_stop_sched_scan+0xe5/0xe5 [cfg80211 \u003cHASH:00cd 31\u003e]\n   ? genl_rcv+0x36/0x36\n   netlink_rcv_skb+0x8a/0xf9\n   genl_rcv+0x28/0x36\n   netlink_unicast+0x27b/0x3a0\n   netlink_sendmsg+0x2aa/0x469\n   sock_sendmsg_nosec+0x49/0x4d\n   ____sys_sendmsg+0xe5/0x213\n   __sys_sendmsg+0xec/0x157\n   ? syscall_enter_from_user_mode+0xd7/0x116\n   do_syscall_64+0x43/0x55\n   entry_SYSCALL_64_after_hwframe+0x44/0xa9\n  RIP: 0033:0x7fa99f6e689b"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:03:28.226Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/065e83ac83c0c0e615b96947145c85c4bd76c09a"
        },
        {
          "url": "https://git.kernel.org/stable/c/5abc81a138f873ab55223ec674afc3a3f945d60f"
        },
        {
          "url": "https://git.kernel.org/stable/c/683a4647a7a3044868cfdc14c117525091b9fa0c"
        }
      ],
      "title": "wifi: rtw89: 8852a: rfk: fix div 0 exception",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50178",
    "datePublished": "2025-06-18T11:03:28.226Z",
    "dateReserved": "2025-06-18T10:57:27.427Z",
    "dateUpdated": "2025-06-18T11:03:28.226Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.