CVE-2024-40983

2024-07-1213:15:19

Linux

web.nvd.nist.gov

linux kernel

vulnerability

cve-2024-40983

tipc

decryption

security advisory

AI Score

6.5

Confidence

High

EPSS

Percentile

10.6%

JSON

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

tipc: force a dst refcount before doing decryption

As it says in commit 3bc07321ccc2 (“xfrm: Force a dst refcount before
entering the xfrm type handlers”):

“Crypto requests might return asynchronous. In this case we leave the
rcu protected region, so force a refcount on the skb’s destination
entry before we enter the xfrm type input/output handlers.”

On TIPC decryption path it has the same problem, and skb_dst_force()
should be called before doing decryption to avoid a possible crash.

Shuang reported this issue when this warning is triggered:

[] WARNING: include/net/dst.h:337 tipc_sk_rcv+0x1055/0x1ea0 [tipc]
[] Kdump: loaded Tainted: G W --------- - - 4.18.0-496.el8.x86_64+debug
[] Workqueue: crypto cryptd_queue_worker
[] RIP: 0010:tipc_sk_rcv+0x1055/0x1ea0 [tipc]
[] Call Trace:
[] tipc_sk_mcast_rcv+0x548/0xea0 [tipc]
[] tipc_rcv+0xcf5/0x1060 [tipc]
[] tipc_aead_decrypt_done+0x215/0x2e0 [tipc]
[] cryptd_aead_crypt+0xdb/0x190
[] cryptd_queue_worker+0xed/0x190
[] process_one_work+0x93d/0x17e0

Affected configurations

Vulners

Node

linuxlinux_kernelRange5.5–5.10.221

linuxlinux_kernelRange5.11.0–5.15.162

linuxlinux_kernelRange5.16.0–6.1.96

linuxlinux_kernelRange6.2.0–6.6.36

linuxlinux_kernelRange6.7.0–6.9.7

linuxlinux_kernelRange6.10.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/tipc/node.c"
    ],
    "versions": [
      {
        "version": "fc1b6d6de220",
        "lessThan": "3eb1b3962789",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fc1b6d6de220",
        "lessThan": "692803b39a36",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fc1b6d6de220",
        "lessThan": "623c90d86a61",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fc1b6d6de220",
        "lessThan": "b57a4a2dc874",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fc1b6d6de220",
        "lessThan": "6808b4137167",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fc1b6d6de220",
        "lessThan": "2ebe8f840c74",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/tipc/node.c"
    ],
    "versions": [
      {
        "version": "5.5",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.5",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.221",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.162",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.96",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.36",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.7",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]