ghsa-f54m-q836-9rr6
Vulnerability from github
Published
2024-02-26 18:30
Modified
2024-06-27 12:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

phy: ti: phy-omap-usb2: Fix NULL pointer dereference for SRP

If the external phy working together with phy-omap-usb2 does not implement send_srp(), we may still attempt to call it. This can happen on an idle Ethernet gadget triggering a wakeup for example:

configfs-gadget.g1 gadget.0: ECM Suspend configfs-gadget.g1 gadget.0: Port suspended. Triggering wakeup ... Unable to handle kernel NULL pointer dereference at virtual address 00000000 when execute ... PC is at 0x0 LR is at musb_gadget_wakeup+0x1d4/0x254 [musb_hdrc] ... musb_gadget_wakeup [musb_hdrc] from usb_gadget_wakeup+0x1c/0x3c [udc_core] usb_gadget_wakeup [udc_core] from eth_start_xmit+0x3b0/0x3d4 [u_ether] eth_start_xmit [u_ether] from dev_hard_start_xmit+0x94/0x24c dev_hard_start_xmit from sch_direct_xmit+0x104/0x2e4 sch_direct_xmit from __dev_queue_xmit+0x334/0xd88 __dev_queue_xmit from arp_solicit+0xf0/0x268 arp_solicit from neigh_probe+0x54/0x7c neigh_probe from __neigh_event_send+0x22c/0x47c __neigh_event_send from neigh_resolve_output+0x14c/0x1c0 neigh_resolve_output from ip_finish_output2+0x1c8/0x628 ip_finish_output2 from ip_send_skb+0x40/0xd8 ip_send_skb from udp_send_skb+0x124/0x340 udp_send_skb from udp_sendmsg+0x780/0x984 udp_sendmsg from __sys_sendto+0xd8/0x158 __sys_sendto from ret_fast_syscall+0x0/0x58

Let's fix the issue by checking for send_srp() and set_vbus() before calling them. For USB peripheral only cases these both could be NULL.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26600"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-26T16:27:59Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: ti: phy-omap-usb2: Fix NULL pointer dereference for SRP\n\nIf the external phy working together with phy-omap-usb2 does not implement\nsend_srp(), we may still attempt to call it. This can happen on an idle\nEthernet gadget triggering a wakeup for example:\n\nconfigfs-gadget.g1 gadget.0: ECM Suspend\nconfigfs-gadget.g1 gadget.0: Port suspended. Triggering wakeup\n...\nUnable to handle kernel NULL pointer dereference at virtual address\n00000000 when execute\n...\nPC is at 0x0\nLR is at musb_gadget_wakeup+0x1d4/0x254 [musb_hdrc]\n...\nmusb_gadget_wakeup [musb_hdrc] from usb_gadget_wakeup+0x1c/0x3c [udc_core]\nusb_gadget_wakeup [udc_core] from eth_start_xmit+0x3b0/0x3d4 [u_ether]\neth_start_xmit [u_ether] from dev_hard_start_xmit+0x94/0x24c\ndev_hard_start_xmit from sch_direct_xmit+0x104/0x2e4\nsch_direct_xmit from __dev_queue_xmit+0x334/0xd88\n__dev_queue_xmit from arp_solicit+0xf0/0x268\narp_solicit from neigh_probe+0x54/0x7c\nneigh_probe from __neigh_event_send+0x22c/0x47c\n__neigh_event_send from neigh_resolve_output+0x14c/0x1c0\nneigh_resolve_output from ip_finish_output2+0x1c8/0x628\nip_finish_output2 from ip_send_skb+0x40/0xd8\nip_send_skb from udp_send_skb+0x124/0x340\nudp_send_skb from udp_sendmsg+0x780/0x984\nudp_sendmsg from __sys_sendto+0xd8/0x158\n__sys_sendto from ret_fast_syscall+0x0/0x58\n\nLet\u0027s fix the issue by checking for send_srp() and set_vbus() before\ncalling them. For USB peripheral only cases these both could be NULL.",
  "id": "GHSA-f54m-q836-9rr6",
  "modified": "2024-06-27T12:30:43Z",
  "published": "2024-02-26T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26600"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0430bfcd46657d9116a26cd377f112cbc40826a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14ef61594a5a286ae0d493b8acbf9eac46fd04c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/396e17af6761b3cc9e6e4ca94b4de7f642bfece1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/486218c11e8d1c8f515a3bdd70d62203609d4b6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7104ba0f1958adb250319e68a15eff89ec4fd36d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8398d8d735ee93a04fb9e9f490e8cacd737e3bf5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8cc889b9dea0579726be9520fcc766077890b462"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be3b82e4871ba00e9b5d0ede92d396d579d7b3b3"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
    }
  ],
  "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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