CVE-2021-47130— nvmet: fix freeing unallocated p2pmem
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I. Basic Information for CVE-2021-47130
Vulnerability Information
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Vulnerability Title
nvmet: fix freeing unallocated p2pmem
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix freeing unallocated p2pmem In case p2p device was found but the p2p pool is empty, the nvme target is still trying to free the sgl from the p2p pool instead of the regular sgl pool and causing a crash (BUG() is called). Instead, assign the p2p_dev for the request only if it was allocated from p2p pool. This is the crash that was caused: [Sun May 30 19:13:53 2021] ------------[ cut here ]------------ [Sun May 30 19:13:53 2021] kernel BUG at lib/genalloc.c:518! [Sun May 30 19:13:53 2021] invalid opcode: 0000 [#1] SMP PTI ... [Sun May 30 19:13:53 2021] kernel BUG at lib/genalloc.c:518! ... [Sun May 30 19:13:53 2021] RIP: 0010:gen_pool_free_owner+0xa8/0xb0 ... [Sun May 30 19:13:53 2021] Call Trace: [Sun May 30 19:13:53 2021] ------------[ cut here ]------------ [Sun May 30 19:13:53 2021] pci_free_p2pmem+0x2b/0x70 [Sun May 30 19:13:53 2021] pci_p2pmem_free_sgl+0x4f/0x80 [Sun May 30 19:13:53 2021] nvmet_req_free_sgls+0x1e/0x80 [nvmet] [Sun May 30 19:13:53 2021] kernel BUG at lib/genalloc.c:518! [Sun May 30 19:13:53 2021] nvmet_rdma_release_rsp+0x4e/0x1f0 [nvmet_rdma] [Sun May 30 19:13:53 2021] nvmet_rdma_send_done+0x1c/0x60 [nvmet_rdma]
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 nvmet 模块释放未分配的 p2pmem。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-47130
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Same Patch Batch · Linux · 2024-03-15 · 26 CVEs total
| CVE-2021-47122 | net: caif: fix memory leak in caif_device_notify | |
| CVE-2021-47135 | mt76: mt7921: fix possible AOOB issue in mt7921_mcu_tx_rate_report | |
| CVE-2021-47134 | efi/fdt: fix panic when no valid fdt found | |
| CVE-2021-47133 | HID: amd_sfh: Fix memory leak in amd_sfh_work | |
| CVE-2021-47132 | mptcp: fix sk_forward_memory corruption on retransmission | |
| CVE-2021-47131 | net/tls: Fix use-after-free after the TLS device goes down and up | |
| CVE-2021-47129 | netfilter: nft_ct: skip expectations for confirmed conntrack | |
| CVE-2021-47128 | bpf, lockdown, audit: Fix buggy SELinux lockdown permission checks | |
| CVE-2021-47127 | ice: track AF_XDP ZC enabled queues in bitmap | |
| CVE-2021-47126 | ipv6: Fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions | |
| CVE-2021-47125 | sch_htb: fix refcount leak in htb_parent_to_leaf_offload | |
| CVE-2021-47124 | io_uring: fix link timeout refs | |
| CVE-2021-47123 | io_uring: fix ltout double free on completion race | |
| CVE-2021-47109 | neighbour: allow NUD_NOARP entries to be forced GCed | |
| CVE-2021-47121 | net: caif: fix memory leak in cfusbl_device_notify | |
| CVE-2021-47120 | HID: magicmouse: fix NULL-deref on disconnect | |
| CVE-2021-47119 | ext4: fix memory leak in ext4_fill_super | |
| CVE-2021-47118 | pid: take a reference when initializing `cad_pid` | |
| CVE-2021-47117 | ext4: fix bug on in ext4_es_cache_extent as ext4_split_extent_at failed | |
| CVE-2021-47116 | ext4: fix memory leak in ext4_mb_init_backend on error path. |
Showing top 20 of 26 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2021-47130
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