CVE-2021-47130

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47130
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]

4.4 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/8a452d62e7cea3c8a2676a3b89a9118755a1a271 Patch
https://git.kernel.org/stable/c/bcd9a0797d73eeff659582f23277e7ab6e5f18f3 Patch
https://git.kernel.org/stable/c/c440cd080761b18a52cac20f2a42e5da1e3995af Patch
https://git.kernel.org/stable/c/8a452d62e7cea3c8a2676a3b89a9118755a1a271 Patch
https://git.kernel.org/stable/c/bcd9a0797d73eeff659582f23277e7ab6e5f18f3 Patch
https://git.kernel.org/stable/c/c440cd080761b18a52cac20f2a42e5da1e3995af Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
History

04 Apr 2025, 14:48

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
CWE CWE-770
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/8a452d62e7cea3c8a2676a3b89a9118755a1a271 - () https://git.kernel.org/stable/c/8a452d62e7cea3c8a2676a3b89a9118755a1a271 - Patch
References () https://git.kernel.org/stable/c/bcd9a0797d73eeff659582f23277e7ab6e5f18f3 - () https://git.kernel.org/stable/c/bcd9a0797d73eeff659582f23277e7ab6e5f18f3 - Patch
References () https://git.kernel.org/stable/c/c440cd080761b18a52cac20f2a42e5da1e3995af - () https://git.kernel.org/stable/c/c440cd080761b18a52cac20f2a42e5da1e3995af - Patch
Information

Published : 2024-03-15 21:15

Updated : 2025-04-04 14:48

NVD link : CVE-2021-47130

Mitre link : CVE-2021-47130

CVE.ORG link : CVE-2021-47130

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-770

Allocation of Resources Without Limits or Throttling