CVE-2023-53525

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2023-53525
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53525.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-53525
Downstream
Related
Published
2025-10-01T11:46:11.188Z
Modified
2026-03-20T12:33:12.467539Z
Summary
RDMA/cma: Allow UD qp_type to join multicast only
Details

In the Linux kernel, the following vulnerability has been resolved:

RDMA/cma: Allow UD qp_type to join multicast only

As for multicast: - The SIDR is the only mode that makes sense; - Besides PSUDP, other port spaces like PSIB is also allowed, as it is UD compatible. In this case qkey also needs to be set [1].

This patch allows only UD qp_type to join multicast, and set qkey to default if it's not set, to fix an uninit-value error: the ib->rec.qkey field is accessed without being initialized.

===================================================== BUG: KMSAN: uninit-value in cmasetqkey drivers/infiniband/core/cma.c:510 [inline] BUG: KMSAN: uninit-value in cmamakemcevent+0xb73/0xe00 drivers/infiniband/core/cma.c:4570 cmasetqkey drivers/infiniband/core/cma.c:510 [inline] cmamakemcevent+0xb73/0xe00 drivers/infiniband/core/cma.c:4570 cmaiboejoinmulticast drivers/infiniband/core/cma.c:4782 [inline] rdmajoinmulticast+0x2b83/0x30a0 drivers/infiniband/core/cma.c:4814 ucmaprocessjoin+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479 ucmajoinmulticast+0x1e3/0x250 drivers/infiniband/core/ucma.c:1546 ucmawrite+0x639/0x6d0 drivers/infiniband/core/ucma.c:1732 vfswrite+0x8ce/0x2030 fs/readwrite.c:588 ksyswrite+0x28c/0x520 fs/readwrite.c:643 __dosyswrite fs/read_write.c:655 [inline] __sesyswrite fs/read_write.c:652 [inline] __ia32syswrite+0xdb/0x120 fs/read_write.c:652 dosyscall32irqson arch/x86/entry/common.c:114 [inline] __dofastsyscall32+0x96/0xf0 arch/x86/entry/common.c:180 dofastsyscall32+0x34/0x70 arch/x86/entry/common.c:205 doSYSENTER32+0x1b/0x20 arch/x86/entry/common.c:248 entrySYSENTERcompatafterhwframe+0x4d/0x5c

Local variable ib.i created at: cmaiboejoinmulticast drivers/infiniband/core/cma.c:4737 [inline] rdmajoinmulticast+0x586/0x30a0 drivers/infiniband/core/cma.c:4814 ucmaprocess_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479

CPU: 0 PID: 29874 Comm: syz-executor.3 Not tainted 5.16.0-rc3-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

[1] https://lore.kernel.org/linux-rdma/20220117183832.GD84788@nvidia.com/

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53525.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b5de0c60cc30c2a3513c7188c73f3f29acc29234
Fixed
ae11498851423d6de27aebfe12a5ee85060ab1d5
Fixed
48e8e7851dc0b1584d83817a78fc7108c8904b54
Fixed
02eabb635bc64bd1e3a7cf887d6d182bffb64b99
Fixed
bb18b9dbac2bbdf7695e0bfaac4bf944ff7b207d
Fixed
58e84f6b3e84e46524b7e5a916b53c1ad798bc8f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
b8d1adbff983be0b54f61c9a4169609d7fab0620
Last affected
feed39c8d1282279fcb30612aa0e8d2635c11280

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53525.json"