ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow()
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
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
- Added to Heist Feed
- Publisher date