CVE-2024-53042: linux
Vulnerability summary
CVE-2024-53042 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.3% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 49 · Related 47Timeline
- 19-11-2024PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
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
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
0.00 pp
From 0.27% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu122 products
- linux< 5.15.0-133.144 | < 6.8.0-58.60
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1078.85 | < 6.8.0-1027.29
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ ab6c9463b137163ba53fc050bf2c72bed2c997b8, < e2742758c9c85c84e077ede5f916479f724e11c2 | ≥ 760852df570747e500a9632d34cbbf4faef30855, < 5edcb3fdb12c3d46a6e79eeeec27d925b80fc168 | ≥ db53cd3d88dc328dea2e968c9c8d3b4294a8a674, < 72c0f482e39c87317ebf67661e28c8d86c93e870 | ≥ db53cd3d88dc328dea2e968c9c8d3b4294a8a674, < 699b48fc31727792edf2cab3829586ae6ba649e2 | ≥ db53cd3d88dc328dea2e968c9c8d3b4294a8a674, < 6dfaa458fe923211c766238a224e0a3c0522935c | ≥ db53cd3d88dc328dea2e968c9c8d3b4294a8a674, < ad4a3ca6a8e886f6491910a3ae5d53595e40597d | ≥ 5.10.227, < 5.10.229 | ≥ 5.15.168, < 5.15.171 | 5.18
- linux_kernel≥ 5.10.227, < 5.10.229 | ≥ 5.15.168, < 5.15.171 | ≥ 5.18, < 6.1.116 | ≥ 6.2, < 6.6.60 | ≥ 6.7, < 6.11.7 | 6.12:rc1 | 6.12:rc2 | 6.12:rc3 | 6.12:rc4 | 6.12:rc5
Debian1 product
- linux< 6.1.119-1 | < 6.11.7-1
3 vendors · 125 products
