CVE-2021-47076 — RDMA/rxe: Return CQE error if invalid lkey was supplied

Affected: Linux

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

RDMA/rxe: Return CQE error if invalid lkey was supplied

RXE is missing update of WQE status in LOCAL_WRITE failures. This caused the following kernel panic if someone sent an atomic operation with an explicitly wrong lkey.

[leonro@vm ~]$ mkt test test_atomic_invalid_lkey (tests.test_atomic.AtomicTest) ... WARNING: CPU: 5 PID: 263 at drivers/infiniband/sw/rxe/rxe_comp.c:740 rxe_completer+0x1a6d/0x2e30 [rdma_rxe] Modules linked in: crc32_generic rdma_rxe ip6_udp_tunnel udp_tunnel rdma_ucm rdma_cm ib_umad ib_ipoib iw_cm ib_cm mlx5_ib ib_uverbs ib_core mlx5_core ptp pps_core CPU: 5 PID: 263 Comm: python3 Not tainted 5.13.0-rc1+ #2936 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:rxe_completer+0x1a6d/0x2e30 [rdma_rxe] Code: 03 0f 8e 65 0e 00 00 3b 93 10 06 00 00 0f 84 82 0a 00 00 4c 89 ff 4c 89 44 24 38 e8 2d 74 a9 e1 4c 8b 44 24 38 e9 1c f5 ff ff <0f> 0b e9 0c e8 ff ff b8 05 00 00 00 41 bf 05 00 00 00 e9 ab e7 ff RSP: 0018:ffff8880158af090 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888016a78000 RCX: ffffffffa0cf1652 RDX: 1ffff9200004b442 RSI: 0000000000000004 RDI: ffffc9000025a210 RBP: dffffc0000000000 R08: 00000000ffffffea R09: ffff88801617740b R10: ffffed1002c2ee81 R11: 0000000000000007 R12: ffff88800f3b63e8 R13: ffff888016a78008 R14: ffffc9000025a180 R15: 000000000000000c FS: 00007f88b622a740(0000) GS:ffff88806…

USN-7159-1 — linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-raspi, linux-xilinx-zynqmp v…

Affected: Ubuntu:Pro:18.04:LTS: linux-gcp-5.4, Ubuntu:Pro:18.04:LTS: linux-hwe-5.4, Ubuntu:Pro:18.04:LTS: linux-ibm-5.4, Ubuntu:20.04:LTS: linux, Ubuntu:20.04:LTS: linux-gcp, Ubuntu:20.04:LTS: linux-ibm, Ubuntu:20.04:LTS: linux-kvm, Ubuntu:20.04:LTS: linux-raspi, Ubuntu:20.04:LTS: linux-xilinx-zynqmp

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM32 architecture; - ARM64 architecture; - S390 architecture; - x86 architecture; - Power management core; - GPU drivers; - InfiniBand drivers; - Network drivers; - S/390 drivers; - TTY drivers; - BTRFS file system; - EROFS file system; - F2FS file system; - File systems infrastructure; - BPF subsystem; - Socket messages infrastructure; - Bluetooth subsystem; - Ethernet bridge; - Networking core; - IPv4 networking; - SELinux security module; (CVE-2022-48938, CVE-2024-42156, CVE-2024-36953, CVE-2024-38538, CVE-2021-47501, CVE-2024-42068, CVE-2024-26947, CVE-2024-46724, CVE-2024-36968, CVE-2023-52497, CVE-2024-35951, CVE-2023-52488, CVE-2024-44940, CVE-2022-48733, CVE-2023-52498, CVE-2022-48943, CVE-2024-35904, CVE-2024-42077, CVE-2024-36938, CVE-2023-52639, CVE-2024-42240, CVE-2024-44942, CVE-2021-47076)

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CVE-2021-47076 — RDMA/rxe: Return CQE error if invalid lkey was supplied

USN-7159-1 — linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-raspi, linux-xilinx-zynqmp v…