{ "cveId": "CVE-2026-31425", "url": "https://patchblox.com/security/cve/CVE-2026-31425", "summary": "CVE-2026-31425 is fixed in 11 products on 1 platform, first by DEBIAN-CVE-2026-31425, released April 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.", "title": "linux: In the Linux kernel, the following vulnerability has been resolved: rds: ib: reject FRMR registration before IB conn...", "description": "In the Linux kernel, the following vulnerability has been resolved: rds: ib: reject FRMR registration before IB connection is established rds_ib_get_mr() extracts the rds_ib_connection from conn-\u003Ec_transport_data and passes it to rds_ib_reg_frmr() for FRWR memory registration. On a fresh outgoing connection, ic is allocated in rds_ib_conn_alloc() with i_cm_id = NULL because the connection worker has not yet called rds_ib_conn_path_connect() to create the rdma_cm_id. When sendmsg() with RDS_CMSG_RDMA_MAP is called on such a connection, the sendmsg path parses the control message before any connection establishment, allowing rds_ib_post_reg_frmr() to dereference ic-\u003Ei_cm_id-\u003Eqp and crash the kernel. The existing guard in rds_ib_reg_frmr() only checks for !ic (added in commit 9e630bcb7701), which does not catch this case since ic is allocated early and is always non-NULL once the connection object exists. KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] RIP: 0010:rds_ib_post_reg_frmr\u002B0x50e/0x920 Call Trace: rds_ib_post_reg_frmr (net/rds/ib_frmr.c:167) rds_ib_map_frmr (net/rds/ib_frmr.c:252) rds_ib_reg_frmr (net/rds/ib_frmr.c:430) rds_ib_get_mr (net/rds/ib_rdma.c:615) __rds_rdma_map (net/rds/rdma.c:295) rds_cmsg_rdma_map (net/rds/rdma.c:860) rds_sendmsg (net/rds/send.c:1363) ____sys_sendmsg do_syscall_64 Add a check in rds_ib_get_mr() that verifies ic, i_cm_id, and qp are all non-NULL before proceeding with FRMR registration, mirroring the guard already present in rds_ib_post_inv(). Return -ENODEV when the connection is not ready, which the existing error handling in rds_cmsg_send() converts to -EAGAIN for userspace retry and triggers rds_conn_connect_if_down() to start the connection worker.", "published": "2026-04-13T14:16:12Z", "severity": "medium", "cvss": 5.5, "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "epss": 0.00114, "epssPercentile": 0.01504, "priority": "Routine", "priorityTier": 4, "exploited": false, "vendorExploited": false, "disclosed": false, "fixes": [ { "platform": "linux", "product": "kernel-64kb", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-azure", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-default", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-default-base", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1.150700.17.33.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-docs", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-livepatch-SLE15-SP7_Update_15", "release": "sles 15.7", "fixedVersion": "1-150700.15.3.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-obs-build", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-source", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-syms", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "kernel-zfcpdump", "release": "sles 15.7", "fixedVersion": "6.4.0-150700.53.55.1", "fix": "SUSE-SU-2026:2238-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2238-1", "released": "2026-06-30T10:03:11Z" }, { "platform": "linux", "product": "linux", "release": "Debian 12.15 (bookworm)", "fixedVersion": "6.1.170-1", "fix": "DEBIAN-CVE-2026-31425", "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31425", "released": "2026-04-13T14:16:12Z" }, { "platform": "linux", "product": "linux", "release": "Debian 13.5 (trixie)", "fixedVersion": "6.12.85-1", "fix": "DEBIAN-CVE-2026-31425", "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31425", "released": "2026-04-13T14:16:12Z" }, { "platform": "linux", "product": "linux", "release": "Debian 14", "fixedVersion": "6.19.12-1", "fix": "DEBIAN-CVE-2026-31425", "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31425", "released": "2026-04-13T14:16:12Z" } ], "noFixYet": [], "dataAsOf": "2026-11-08T19:12:23Z", "attribution": { "text": "Data: Patchblox Patch Radar", "url": "https://patchblox.com/security/patch-radar", "terms": "https://patchblox.com/security/patch-radar/use-the-data" } }