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ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow() There are code paths from which the function is called without holding the RCU read lock, resulting in a suspicious RCU usage warning [1]. Fix by using l3mdev_master_upper_ifindex_by_index() which will acquire the RCU read lock before calling l3mdev_master_upper_ifindex_by_index_rcu(). [1] WARNING: suspicious RCU usage 6.12.0-rc3-custom-gac8f72681cf2 #141 Not tainted ----------------------------- net/core/dev.c:876 RCU-list traversed in non-reader section!! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by ip/361: #0: ffffffff86fc7cb0 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x377/0xf60 stack backtrace: CPU: 3 UID: 0 PID: 361 Comm: ip Not tainted 6.12.0-rc3-custom-gac8f72681cf2 #141 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 Call Trace: dump_stack_lvl+0xba/0x110 lockdep_rcu_suspicious.cold+0x4f/0xd6 dev_get_by_index_rcu+0x1d3/0x210 l3mdev_master_upper_ifindex_by_index_rcu+0x2b/0xf0 ip_tunnel_bind_dev+0x72f/0xa00 ip_tunnel_newlink+0x368/0x7a0 ipgre_newlink+0x14c/0x170 __rtnl_newlink+0x1173/0x19c0 rtnl_newlink+0x6c/0xa0 rtnetlink_rcv_msg+0x3cc/0xf60 netlink_rcv_skb+0x171/0x450 netlink_unicast+0x539/0x7f0 netlink_sendmsg+0x8c1/0xd80 ____sys_sendmsg+0x8f9/0xc20 ___sys_sendmsg+0x197/0x1e0 __sys_sendmsg+0x122/0x1f0 do_syscall_64+0xbb/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Announced Source revision 1
Original source ↗

CVE-2024-53042

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2024-53042

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "ab6c9463b137163ba53fc050bf2c72bed2c997b8",
        "lessThan": "e2742758c9c85c84e077ede5f916479f724e11c2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "760852df570747e500a9632d34cbbf4faef30855",
        "lessThan": "5edcb3fdb12c3d46a6e79eeeec27d925b80fc168",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "db53cd3d88dc328dea2e968c9c8d3b4294a8a674",
        "lessThan": "72c0f482e39c87317ebf67661e28c8d86c93e870",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "db53cd3d88dc328dea2e968c9c8d3b4294a8a674",
        "lessThan": "699b48fc31727792edf2cab3829586ae6ba649e2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "db53cd3d88dc328dea2e968c9c8d3b4294a8a674",
        "lessThan": "6dfaa458fe923211c766238a224e0a3c0522935c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "db53cd3d88dc328dea2e968c9c8d3b4294a8a674",
        "lessThan": "ad4a3ca6a8e886f6491910a3ae5d53595e40597d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5.10.227",
        "lessThan": "5.10.229",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.15.168",
        "lessThan": "5.15.171",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "include/net/ip_tunnels.h"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.18"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.18",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.229",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.171",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.116",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.60",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.11.7",
        "versionType": "semver",
        "lessThanOrEqual": "6.11.*"
      },
      {
        "status": "unaffected",
        "version": "6.12",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "include/net/ip_tunnels.h"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-53042

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#26810 · Revision 1
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Publisher date
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