VDB

UBUNTU-CVE-2021-47076

UBUNTU-CVE-2021-47076 PUBLISHED CVSS 6.800000190734863 MEDIUM

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:ffff88806d540000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f88b5a1fa10 CR3: 000000000d848004 CR4: 0000000000370ea0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rxe_do_task+0x130/0x230 [rdma_rxe] rxe_rcv+0xb11/0x1df0 [rdma_rxe] rxe_loopback+0x157/0x1e0 [rdma_rxe] rxe_responder+0x5532/0x7620 [rdma_rxe] rxe_do_task+0x130/0x230 [rdma_rxe] rxe_rcv+0x9c8/0x1df0 [rdma_rxe] rxe_loopback+0x157/0x1e0 [rdma_rxe] rxe_requester+0x1efd/0x58c0 [rdma_rxe] rxe_do_task+0x130/0x230 [rdma_rxe] rxe_post_send+0x998/0x1860 [rdma_rxe] ib_uverbs_post_send+0xd5f/0x1220 [ib_uverbs] ib_uverbs_write+0x847/0xc80 [ib_uverbs] vfs_write+0x1c5/0x840 ksys_write+0x176/0x1d0 do_syscall_64+0x3f/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae

Risk Scores

CVSS 4.0
6.800000190734863
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected Products

VendorProductVersions
Ubuntu:22.04:LTSlinux-hwe-5.195.19.0-50.50, 0, 5.19.0-28.29~22.04.1
Ubuntu:18.04:LTSlinux-oracle-5.05.0.0-1013.18, 5.0.0-1014.19, 5.0.0-1010.15~18.04.1
Ubuntu:Pro:FIPS:18.04:LTSlinux-gcp-fips4.15.0-1001.1, 0
Ubuntu:Pro:18.04:LTSlinux-oracle4.15.0-1116.127, 4.15.0-1115.126, 4.15.0-1114.125
Ubuntu:20.04:LTSlinux-gcp-5.135.13.0-1033.40~20.04.1, 5.13.0-1031.37~20.04.1, 5.13.0-1030.36~20.04.1
Ubuntu:20.04:LTSlinux-oracle5.4.0-1115.124, 5.4.0-1134.143, 5.4.0-1133.142
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.190, 5.19.0-1017.18~22.04.1, 5.19.0-1018.19~22.04.1
Ubuntu:20.04:LTSlinux-hwe-5.135.13.0-30.33~20.04.1, 5.13.0-51.58~20.04.1, 5.13.0-52.59~20.04.1
Ubuntu:20.04:LTSlinux-azure-5.110, 5.11.0-1020.21~20.04.1, 5.11.0-1021.22~20.04.1
Ubuntu:18.04:LTSlinux-hwe5.0.0-27.28~18.04.1, 5.0.0-29.31~18.04.1, 5.3.0-75.71
Ubuntu:Pro:18.04:LTSlinux-azure-4.154.15.0-1118.131, 4.15.0-1183.198, 4.15.0-1182.197
Ubuntu:22.04:LTSlinux-realtime0, 5.15.0-1032.35
Ubuntu:18.04:LTSlinux-oracle-5.35.3.0-1028.30~18.04.1, 5.3.0-1027.29~18.04.1, 5.3.0-1024.26~18.04.1
Ubuntu:22.04:LTSlinux-oem-5.175.17.0-1025.26, 5.17.0-1017.18, 5.17.0-1031.32
Ubuntu:20.04:LTSlinux-iot5.4.0-1009.11, 5.4.0-1030.31, 5.4.0-1011.13
Ubuntu:22.04:LTSlinux-intel-iot-realtime0, 5.15.0-1073.75
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-gcp-fips4.15.0-2045.50, 4.15.0-2047.52, 4.15.0-2052.57
Ubuntu:20.04:LTSlinux-gkeop5.4.0-1043.44, 5.4.0-1102.106, 5.4.0-1101.105
Ubuntu:22.04:LTSlinux-allwinner-5.195.19.0-1010.10~22.04.1, 5.19.0-1011.11~22.04.1, 5.19.0-1012.12~22.04.1
Ubuntu:18.04:LTSlinux-hwe-edge5.0.0-15.16~18.04.1, 5.0.0-17.18~18.04.1, 5.0.0-16.17~18.04.1

…and 94 more

Timeline

  • Mar 1, 2024 CVE Published
  • Oct 22, 2026 CVE Updated
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Distribution Patch
  • Oct 30, 2026 Security Advisory

References

Open in Interactive Console →
$ Console Community · 50/day Open console ›