CVE-2022-50885 Details
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed There is a null-ptr-deref when mount.cifs over rdma: BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe] Read of size 8 at addr 0000000000000018 by task mount.cifs/3046 CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3 Call Trace: <TASK> dump_stack_lvl+0x34/0x44 kasan_report+0xad/0x130 rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe] execute_in_process_context+0x25/0x90 __rxe_cleanup+0x101/0x1d0 [rdma_rxe] rxe_create_qp+0x16a/0x180 [rdma_rxe] create_qp.part.0+0x27d/0x340 ib_create_qp_kernel+0x73/0x160 rdma_create_qp+0x100/0x230 _smbd_get_connection+0x752/0x20f0 smbd_get_connection+0x21/0x40 cifs_get_tcp_session+0x8ef/0xda0 mount_get_conns+0x60/0x750 cifs_mount+0x103/0xd00 cifs_smb3_do_mount+0x1dd/0xcb0 smb3_get_tree+0x1d5/0x300 vfs_get_tree+0x41/0xf0 path_mount+0x9b3/0xdd0 __x64_sys_mount+0x190/0x1d0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 The root cause of the issue is the socket create failed in rxe_qp_init_req(). So move the reset rxe_qp_do_cleanup() after the NULL ptr check.
A null pointer dereference vulnerability has been identified in the Linux kernel's RDMA/rxe component. This issue occurs in the function rxe_qp_do_cleanup() when the socket creation fails, leading to a read of an invalid memory address. The vulnerability manifests as a bug reported by KASAN, indicating a null pointer dereference while the CIFS filesystem is being mounted over RDMA. The problem arises because the socket creation failure is not properly handled, allowing a cleanup function to access a null reference.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. The specific commit that addresses this issue is available in the Linux kernel stable tree.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Dec 30, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/5b924632d84a60bc0c7fe6e9bbbce99d03908957 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/6bb5a62bfd624039b05157745c234068508393a9 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/7340ca9f782be6fbe3f64a134dc112772764f766 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/821f9a18210f6b9fd6792471714c799607b25db4 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/bd7106a6004f1077a365ca7f5a99c7a708e20714 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/ee24de095569935eba600f7735e8e8ddea5b418e | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/f64f08b9e6fb305a25dd75329e06ae342b9ce336 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/f67376d801499f4fa0838c18c1efcad8840e550d | kernel.org | Source CodeVendor |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 4, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Dec 30, 2025 | New CVE Received | kernel.org |