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CVE-2024-53042— ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ip_tunnel_init_flow函数中的可疑RCU使用警告。

AI Predicted 4.2 Difficulty: Moderate EPSS 0.27% · P17

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux ab6c9463b137163ba53fc050bf2c72bed2c997b8< e2742758c9c85c84e077ede5f916479f724e11c2 affected
760852df570747e500a9632d34cbbf4faef30855< 5edcb3fdb12c3d46a6e79eeeec27d925b80fc168 affected
db53cd3d88dc328dea2e968c9c8d3b4294a8a674< 72c0f482e39c87317ebf67661e28c8d86c93e870 affected
db53cd3d88dc328dea2e968c9c8d3b4294a8a674< 699b48fc31727792edf2cab3829586ae6ba649e2 affected
db53cd3d88dc328dea2e968c9c8d3b4294a8a674< 6dfaa458fe923211c766238a224e0a3c0522935c affected
db53cd3d88dc328dea2e968c9c8d3b4294a8a674< ad4a3ca6a8e886f6491910a3ae5d53595e40597d affected
5.10.227< 5.10.229 affected
5.15.168< 5.15.171 affected
… +8 more rows
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I. Basic Information for CVE-2024-53042

Vulnerability Information
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Vulnerability Title
ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow()
Source: CVE Program / CVE List V5
Vulnerability Description
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: <TASK> 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
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ip_tunnel_init_flow函数中的可疑RCU使用警告。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux ab6c9463b137163ba53fc050bf2c72bed2c997b8 ~ e2742758c9c85c84e077ede5f916479f724e11c2 -
Linux Linux 5.18 -

II. Public POCs for CVE-2024-53042

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III. Intelligence Information for CVE-2024-53042

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Patches & Fixes for CVE-2024-53042 (1)

Same Patch Batch · Linux · 2024-11-19 · 88 CVEs total

CVE-2024-50283 9.8 CRITICAL ksmbd: fix slab-use-after-free in smb3_preauth_hash_rsp
CVE-2024-50286 9.8 CRITICAL ksmbd: fix slab-use-after-free in ksmbd_smb2_session_create
CVE-2024-50276 9.8 CRITICAL net: vertexcom: mse102x: Fix possible double free of TX skb
CVE-2024-53066 9.8 CRITICAL nfs: Fix KMSAN warning in decode_getfattr_attrs()
CVE-2024-53058 9.4 CRITICAL net: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data
CVE-2024-53082 8.4 HIGH virtio_net: Add hash_key_length check
CVE-2024-50299 8.2 HIGH sctp: properly validate chunk size in sctp_sf_ootb()
CVE-2024-50293 7.8 HIGH net/smc: do not leave a dangling sk pointer in __smc_create()
CVE-2024-50291 7.8 HIGH media: dvb-core: add missing buffer index check
CVE-2024-50294 7.8 HIGH rxrpc: Fix missing locking causing hanging calls
CVE-2023-52921 7.8 HIGH drm/amdgpu: fix possible UAF in amdgpu_cs_pass1()
CVE-2024-50288 7.8 HIGH media: vivid: fix buffer overwrite when using > 32 buffers
CVE-2024-53063 7.8 HIGH media: dvbdev: prevent the risk of out of memory access
CVE-2024-53088 7.8 HIGH i40e: fix race condition by adding filter's intermediate sync state
CVE-2024-53080 7.8 HIGH drm/panthor: Lock XArray when getting entries for the VM
CVE-2024-53079 7.8 HIGH mm/thp: fix deferred split unqueue naming and locking
CVE-2024-53076 7.8 HIGH iio: gts-helper: Fix memory leaks for the error path of iio_gts_build_avail_scale_table()
CVE-2024-53044 7.8 HIGH net/sched: sch_api: fix xa_insert() error path in tcf_block_get_ext()
CVE-2024-50301 7.8 HIGH security/keys: fix slab-out-of-bounds in key_task_permission
CVE-2024-50300 7.8 HIGH regulator: rtq2208: Fix uninitialized use of regulator_config

Showing top 20 of 88 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-53042

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