RDMA/cma: Fix kmemleak in rdma_core observed during blktests nvme/rdma use siw
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-401.
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/cma: Fix kmemleak in rdma_core observed during blktests nvme/rdma use siw When running blktests nvme/rdma, the following kmemleak issue will appear. kmemleak: Kernel memory leak detector initialized (mempool available:36041) kmemleak: Automatic memory scanning thread started kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak) kmemleak: 8 new suspected memory leaks (see /sys/kernel/debug/kmemleak) kmemleak: 17 new suspected memory leaks (see /sys/kernel/debug/kmemleak) kmemleak: 4 new suspected memory leaks (see /sys/kernel/debug/kmemleak) unreferenced object 0xffff88855da53400 (size 192): comm "rdma", pid 10630, jiffies 4296575922 hex dump (first 32 bytes): 37 00 00 00 00 00 00 00 c0 ff ff ff 1f 00 00 00 7............... 10 34 a5 5d 85 88 ff ff 10 34 a5 5d 85 88 ff ff .4.].....4.].... backtrace (crc 47f66721): [<ffffffff911251bd>] kmalloc_trace+0x30d/0x3b0 [<ffffffffc2640ff7>] alloc_gid_entry+0x47/0x380 [ib_core] [<ffffffffc2642206>] add_modify_gid+0x166/0x930 [ib_core] [<ffffffffc2643468>] ib_cache_update.part.0+0x6d8/0x910 [ib_core] [<ffffffffc2644e1a>] ib_cache_setup_one+0x24a/0x350 [ib_core] [<ffffffffc263949e>] ib_register_device+0x9e/0x3a0 [ib_core] [<ffffffffc2a3d389>] 0xffffffffc2a3d389 [<ffffffffc2688cd8>] nldev_newlink+0x2b8/0x520 [ib_core] [<ffffffffc2645fe3>] rdma_nl_rcv_msg+0x2c3/0x520 [ib_core] [<ffffffffc264648c>] rdma_nl_rcv_skb.constprop.0.isra.0+0x23c/0x3a0 [ib_core] [<ffffffff9270e7b5>] netlink_unicast+0x445/0x710 [<ffffffff9270f1f1>] netlink_sendmsg+0x761/0xc40 [<ffffffff9249db29>] __sys_sendto+0x3a9/0x420 [<ffffffff9249dc8c>] __x64_sys_sendto+0xdc/0x1b0 [<ffffffff92db0ad3>] do_syscall_64+0x93/0x180 [<ffffffff92e00126>] entry_SYSCALL_64_after_hwframe+0x71/0x79 The root cause: rdma_put_gid_attr is not called when sgid_attr is set to ERR_PTR(-ENODEV).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 6.6 and later | 6.6.33, 6.8.12, 6.9.3, 6.10 | Patch available | CNA |
- Linux VendorLinux Affected 6.6 and later Fixed in 6.6.33, 6.8.12, 6.9.3, 6.10 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.6 to before 6.6.33; 6.7 to before 6.8.12; 6.9 to before 6.9.3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.6 to before 6.6.33; 6.7 to before 6.8.12; 6.9 to before 6.9.3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.6.33, 6.8.12, 6.9.3, 6.10
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-38539
- 2026-10-03 Alias added: GHSA-vmv4-cp43-whx4
References
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-38539 · CVE Program
- CVE-2024-38539 · NVD
- FIRST EPSS
- GHSA-vmv4-cp43-whx4 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-38539 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences