Answer in brief
CVE-2024-53042 records a Medium severity (CVSS 5.5) vulnerability in ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ab6c9463b137163ba53fc050bf2c72bed2c997b8 <e2742758c9c85c84e077ede5f916479f724e11c2 || >=760852df570747e500a9632d34cbbf4faef30855 <5edcb3fdb12c3d46a6e79eeeec27d925b80fc168 || >=db53cd3d88dc328dea2e968c9c8d3b4294a8a674 <72c0f482e39c87317ebf67661e28c8d86c93e870 || >=db53cd3d88dc328dea2e968c9c8d3b4294a8a674 <699b48fc31727792edf2cab3829586ae6ba649e2 || >=db53cd3d88dc328dea2e968c9c8d3b4294a8a674 <6dfaa458fe923211c766238a224e0a3c0522935c || >=db53cd3d88dc328dea2e968c9c8d3b4294a8a674 <ad4a3ca6a8e886f6491910a3ae5d53595e40597d || >=5.10.227 <5.10.229 || >=5.15.168 <5.15.171 | e2742758c9c85c84e077ede5f916479f724e11c2, 5edcb3fdb12c3d46a6e79eeeec27d925b80fc168, 72c0f482e39c87317ebf67661e28c8d86c93e870, 699b48fc31727792edf2cab3829586ae6ba649e2, 6dfaa458fe923211c766238a224e0a3c0522935c, ad4a3ca6a8e886f6491910a3ae5d53595e40597d, 5.10.229, 5.15.171 |
| Linux/Linuxgeneric | 5.18 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <V1.1.1 | V1.1.1 |
Published upstream
Nov 19, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
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
Quoted source text, attributed separately from HOL analysis.