In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: nullify cq->dbg pointer in mlx5_debug_cq_remove()
Prior to this patch in case mlx5_core_destroy_cq() failed it proceeds to rest of destroy operations. mlx5_core_destroy_cq() could be called again by user and cause additional call of mlx5_debug_cq_remove(). cq->dbg was not nullify in previous call and cause the crash.
Fix it by nullify cq->dbg pointer after removal.
Also proceed to destroy operations only if FW return 0 for MLX5_CMD_OP_DESTROY_CQ command.
general protection fault, probably for non-canonical address 0x2000300004058: 0000 [#1] SMP PTI CPU: 5 PID: 1228 Comm: python Not tainted 5.15.0-rc5_for_upstream_min_debug_2021_10_14_11_06 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:lockref_get+0x1/0x60 Code: 5d e9 53 ff ff ff 48 8d 7f 70 e8 0a 2e 48 00 c7 85 d0 00 00 00 02 00 00 00 c6 45 70 00 fb 5d c3 c3 cc cc cc cc cc cc cc cc 53 <48> 8b 17 48 89 fb 85 d2 75 3d 48 89 d0 bf 64 00 00 00 48 89 c1 48 RSP: 0018:ffff888137dd7a38 EFLAGS: 00010206 RAX: 0000000000000000 RBX: ffff888107d5f458 RCX: 00000000fffffffe RDX: 000000000002c2b0 RSI: ffffffff8155e2e0 RDI: 0002000300004058 RBP: ffff888137dd7a88 R08: 0002000300004058 R09: ffff8881144a9f88 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881141d4000 R13: ffff888137dd7c68 R14: ffff888137dd7d58 R15: ffff888137dd7cc0 FS: 00007f4644f2a4c0(0000) GS:ffff8887a2d40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b4500f4380 CR3: 0000000114f7a003 CR4: 0000000000170ea0 Call Trace: simple_recursive_removal+0x33/0x2e0 ? debugfs_remove+0x60/0x60 debugfs_remove+0x40/0x60 mlx5_debug_cq_remove+0x32/0x70 [mlx5_core] mlx5_core_destroy_cq+0x41/0x1d0 [mlx5_core] devx_obj_cleanup+0x151/0x330 [mlx5_ib] ? __pollwait+0xd0/0xd0 ? xas_load+0x5/0x70 ? xa_load+0x62/0xa0 destroy_hw_idr_uobject+0x20/0x80 [ib_uverbs] uverbs_destroy_uobject+0x3b/0x360 [ib_uverbs] uobj_destroy+0x54/0xa0 [ib_uverbs] ib_uverbs_cmd_verbs+0xaf2/0x1160 [ib_uverbs] ? uverbs_finalize_object+0xd0/0xd0 [ib_uverbs] ib_uverbs_ioctl+0xc4/0x1b0 [ib_uverbs] __x64_sys_ioctl+0x3e4/0x8e0
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.10.82-83.359Upgrade python-perfUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade bpftool-debuginfoUpgrade perfUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-develUpgrade kernel | Aug 28, 2024 | Apr 10, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Apr 10, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 10, 2024 |
| Suse | — | Upgrade dtb-hisiliconUpgrade kernel-symsUpgrade dtb-mediatekUpgrade ocfs2-kmp-azureUpgrade kernel-64kb-optionalUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-develUpgrade kernel-debugUpgrade dtb-renesasUpgrade gfs2-kmp-64kbUpgrade ocfs2-kmp-defaultUpgrade kernel-64kbUpgrade kernel-default-develUpgrade cluster-md-kmp-64kbUpgrade kernel-default-optionalUpgrade cluster-md-kmp-rtUpgrade gfs2-kmp-azureUpgrade kernel-rt-develUpgrade dtb-allwinnerUpgrade gfs2-kmp-defaultUpgrade kernel-64kb-extraUpgrade kernel-defaultUpgrade dtb-alteraUpgrade kernel-devel-rtUpgrade dtb-lgUpgrade reiserfs-kmp-azureUpgrade kernel-default-vdsoUpgrade dtb-xilinxUpgrade dtb-amdUpgrade dtb-sprdUpgrade kernel-azure-optionalUpgrade dlm-kmp-rtUpgrade dtb-armUpgrade kernel-64kb-livepatch-develUpgrade dtb-caviumUpgrade kselftests-kmp-64kbUpgrade dlm-kmp-64kbUpgrade dtb-exynosUpgrade kernel-default-baseUpgrade kernel-64kb-develUpgrade kernel-rt-livepatchUpgrade kernel-default-livepatch-develUpgrade kernel-source-azureUpgrade kernel-debug-develUpgrade reiserfs-kmp-defaultUpgrade kernel-default-livepatchUpgrade kernel-syms-azureUpgrade kernel-azure-extraUpgrade kernel-source-vanillaUpgrade kernel-macrosUpgrade kernel-rt-vdsoUpgrade kselftests-kmp-rtUpgrade kernel-rtUpgrade kernel-debug-livepatch-develUpgrade kernel-devel-azureUpgrade kernel-sourceUpgrade kernel-kvmsmallUpgrade dtb-freescaleUpgrade kernel-azure-develUpgrade kernel-source-rtUpgrade kernel-kvmsmall-livepatch-develUpgrade dtb-marvellUpgrade gfs2-kmp-rtUpgrade dtb-rockchipUpgrade ocfs2-kmp-64kbUpgrade dlm-kmp-azureUpgrade dtb-nvidiaUpgrade reiserfs-kmp-rtUpgrade cluster-md-kmp-defaultUpgrade kernel-debug-vdsoUpgrade kernel-rt_debugUpgrade dtb-amazonUpgrade dtb-amlogicUpgrade kernel-azureUpgrade kernel-docs-htmlUpgrade kernel-kvmsmall-develUpgrade kernel-default-extraUpgrade dlm-kmp-defaultUpgrade kernel-rt-livepatch-develUpgrade kernel-syms-rtUpgrade kernel-rt_debug-develUpgrade kernel-zfcpdumpUpgrade cluster-md-kmp-azureUpgrade kernel-kvmsmall-vdsoUpgrade dtb-appleUpgrade kselftests-kmp-azureUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt-optionalUpgrade kernel-rt-extraUpgrade dtb-broadcomUpgrade kernel-default-base-rebuildUpgrade dtb-qcomUpgrade kernel-azure-vdsoUpgrade ocfs2-kmp-rtUpgrade kernel-docsUpgrade kselftests-kmp-defaultUpgrade dtb-socionextUpgrade kernel-obs-buildUpgrade reiserfs-kmp-64kbUpgrade dtb-apmUpgrade kernel-obs-qaUpgrade kernel-azure-livepatch-devel | Aug 9, 2024 | Apr 10, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 10, 2024 |
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