GHSA-QW58-GC74-P646

Vulnerability from github – Published: 2024-10-21 12:30 – Updated: 2024-10-24 15:31
VLAI?
Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7915: fix oops on non-dbdc mt7986

mt7915_band_config() sets band_idx = 1 on the main phy for mt7986 with MT7975_ONE_ADIE or MT7976_ONE_ADIE.

Commit 0335c034e726 ("wifi: mt76: fix race condition related to checking tx queue fill status") introduced a dereference of the phys array indirectly indexed by band_idx via wcid->phy_idx in mt76_wcid_cleanup(). This caused the following Oops on affected mt7986 devices:

Unable to handle kernel read from unreadable memory at virtual address 0000000000000024 Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005 CM = 0, WnR = 0 user pgtable: 4k pages, 39-bit VAs, pgdp=0000000042545000 [0000000000000024] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: ... mt7915e mt76_connac_lib mt76 mac80211 cfg80211 ... CPU: 2 PID: 1631 Comm: hostapd Not tainted 5.15.150 #0 Hardware name: ZyXEL EX5700 (Telenor) (DT) pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : mt76_wcid_cleanup+0x84/0x22c [mt76] lr : mt76_wcid_cleanup+0x64/0x22c [mt76] sp : ffffffc00a803700 x29: ffffffc00a803700 x28: ffffff80008f7300 x27: ffffff80003f3c00 x26: ffffff80000a7880 x25: ffffffc008c26e00 x24: 0000000000000001 x23: ffffffc000a68114 x22: 0000000000000000 x21: ffffff8004172cc8 x20: ffffffc00a803748 x19: ffffff8004152020 x18: 0000000000000000 x17: 00000000000017c0 x16: ffffffc008ef5000 x15: 0000000000000be0 x14: ffffff8004172e28 x13: ffffff8004172e28 x12: 0000000000000000 x11: 0000000000000000 x10: ffffff8004172e30 x9 : ffffff8004172e28 x8 : 0000000000000000 x7 : ffffff8004156020 x6 : 0000000000000000 x5 : 0000000000000031 x4 : 0000000000000000 x3 : 0000000000000001 x2 : 0000000000000000 x1 : ffffff80008f7300 x0 : 0000000000000024 Call trace: mt76_wcid_cleanup+0x84/0x22c [mt76] __mt76_sta_remove+0x70/0xbc [mt76] mt76_sta_state+0x8c/0x1a4 [mt76] mt7915_eeprom_get_power_delta+0x11e4/0x23a0 [mt7915e] drv_sta_state+0x144/0x274 [mac80211] sta_info_move_state+0x1cc/0x2a4 [mac80211] sta_set_sinfo+0xaf8/0xc24 [mac80211] sta_info_destroy_addr_bss+0x4c/0x6c [mac80211]

ieee80211_color_change_finish+0x1c08/0x1e70 [mac80211] cfg80211_check_station_change+0x1360/0x4710 [cfg80211] genl_family_rcv_msg_doit+0xb4/0x110 genl_rcv_msg+0xd0/0x1bc netlink_rcv_skb+0x58/0x120 genl_rcv+0x34/0x50 netlink_unicast+0x1f0/0x2ec netlink_sendmsg+0x198/0x3d0 _syssendmsg+0x1b0/0x210 _sys_sendmsg+0x80/0xf0 __sys_sendmsg+0x44/0xa0 __arm64_sys_sendmsg+0x20/0x30 invoke_syscall.constprop.0+0x4c/0xe0 do_el0_svc+0x40/0xd0 el0_svc+0x14/0x4c el0t_64_sync_handler+0x100/0x110 el0t_64_sync+0x15c/0x160 Code: d2800002 910092c0 52800023 f9800011 (885f7c01) ---[ end trace 7e42dd9a39ed2281 ]---

Fix by using mt76_dev_phy() which will map band_idx to the correct phy for all hardware combinations.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-47715"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T12:15:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: fix oops on non-dbdc mt7986\n\nmt7915_band_config() sets band_idx = 1 on the main phy for mt7986\nwith MT7975_ONE_ADIE or MT7976_ONE_ADIE.\n\nCommit 0335c034e726 (\"wifi: mt76: fix race condition related to\nchecking tx queue fill status\") introduced a dereference of the\nphys array indirectly indexed by band_idx via wcid-\u003ephy_idx in\nmt76_wcid_cleanup(). This caused the following Oops on affected\nmt7986 devices:\n\n Unable to handle kernel read from unreadable memory at virtual address 0000000000000024\n Mem abort info:\n   ESR = 0x0000000096000005\n   EC = 0x25: DABT (current EL), IL = 32 bits\n   SET = 0, FnV = 0\n   EA = 0, S1PTW = 0\n   FSC = 0x05: level 1 translation fault\n Data abort info:\n   ISV = 0, ISS = 0x00000005\n   CM = 0, WnR = 0\n user pgtable: 4k pages, 39-bit VAs, pgdp=0000000042545000\n [0000000000000024] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000\n Internal error: Oops: 0000000096000005 [#1] SMP\n Modules linked in: ... mt7915e mt76_connac_lib mt76 mac80211 cfg80211 ...\n CPU: 2 PID: 1631 Comm: hostapd Not tainted 5.15.150 #0\n Hardware name: ZyXEL EX5700 (Telenor) (DT)\n pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : mt76_wcid_cleanup+0x84/0x22c [mt76]\n lr : mt76_wcid_cleanup+0x64/0x22c [mt76]\n sp : ffffffc00a803700\n x29: ffffffc00a803700 x28: ffffff80008f7300 x27: ffffff80003f3c00\n x26: ffffff80000a7880 x25: ffffffc008c26e00 x24: 0000000000000001\n x23: ffffffc000a68114 x22: 0000000000000000 x21: ffffff8004172cc8\n x20: ffffffc00a803748 x19: ffffff8004152020 x18: 0000000000000000\n x17: 00000000000017c0 x16: ffffffc008ef5000 x15: 0000000000000be0\n x14: ffffff8004172e28 x13: ffffff8004172e28 x12: 0000000000000000\n x11: 0000000000000000 x10: ffffff8004172e30 x9 : ffffff8004172e28\n x8 : 0000000000000000 x7 : ffffff8004156020 x6 : 0000000000000000\n x5 : 0000000000000031 x4 : 0000000000000000 x3 : 0000000000000001\n x2 : 0000000000000000 x1 : ffffff80008f7300 x0 : 0000000000000024\n Call trace:\n  mt76_wcid_cleanup+0x84/0x22c [mt76]\n  __mt76_sta_remove+0x70/0xbc [mt76]\n  mt76_sta_state+0x8c/0x1a4 [mt76]\n  mt7915_eeprom_get_power_delta+0x11e4/0x23a0 [mt7915e]\n  drv_sta_state+0x144/0x274 [mac80211]\n  sta_info_move_state+0x1cc/0x2a4 [mac80211]\n  sta_set_sinfo+0xaf8/0xc24 [mac80211]\n  sta_info_destroy_addr_bss+0x4c/0x6c [mac80211]\n\n  ieee80211_color_change_finish+0x1c08/0x1e70 [mac80211]\n  cfg80211_check_station_change+0x1360/0x4710 [cfg80211]\n  genl_family_rcv_msg_doit+0xb4/0x110\n  genl_rcv_msg+0xd0/0x1bc\n  netlink_rcv_skb+0x58/0x120\n  genl_rcv+0x34/0x50\n  netlink_unicast+0x1f0/0x2ec\n  netlink_sendmsg+0x198/0x3d0\n  ____sys_sendmsg+0x1b0/0x210\n  ___sys_sendmsg+0x80/0xf0\n  __sys_sendmsg+0x44/0xa0\n  __arm64_sys_sendmsg+0x20/0x30\n  invoke_syscall.constprop.0+0x4c/0xe0\n  do_el0_svc+0x40/0xd0\n  el0_svc+0x14/0x4c\n  el0t_64_sync_handler+0x100/0x110\n  el0t_64_sync+0x15c/0x160\n Code: d2800002 910092c0 52800023 f9800011 (885f7c01)\n ---[ end trace 7e42dd9a39ed2281 ]---\n\nFix by using mt76_dev_phy() which will map band_idx to the correct phy\nfor all hardware combinations.",
  "id": "GHSA-qw58-gc74-p646",
  "modified": "2024-10-24T15:31:08Z",
  "published": "2024-10-21T12:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47715"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c128f3ff0be5802aef66f332e4bba6afe98735e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/818dd118f4a997f8b4fe9c010b22402d410a2424"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/862bf7cbd772c2bad570ef0c5b5556a1330656dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a94d2bd111b39f0c2c7fcbfbf8276ab98c3b8353"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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