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
CPE cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
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:*:*:*:*:*:*:*:*
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
First Time Linux linux Kernel
Linux
CWE CWE-770

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/8a452d62e7cea3c8a2676a3b89a9118755a1a271 - () https://git.kernel.org/stable/c/8a452d62e7cea3c8a2676a3b89a9118755a1a271 -
References () https://git.kernel.org/stable/c/bcd9a0797d73eeff659582f23277e7ab6e5f18f3 - () https://git.kernel.org/stable/c/bcd9a0797d73eeff659582f23277e7ab6e5f18f3 -
References () https://git.kernel.org/stable/c/c440cd080761b18a52cac20f2a42e5da1e3995af - () https://git.kernel.org/stable/c/c440cd080761b18a52cac20f2a42e5da1e3995af -

04 Nov 2024, 17:35

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: nvmet: solución que libera p2pmem no asignado En caso de que se encuentre un dispositivo p2p pero el grupo p2p esté vacío, el objetivo nvme todavía está intentando liberar el sgl del grupo p2p en lugar del sgl normal. pool y provocando un bloqueo (se llama a BUG()). En su lugar, asigne p2p_dev para la solicitud solo si se asignó desde el grupo p2p. Este es el accidente que se provocó: [domingo 30 de mayo 19:13:53 2021] ------------[ cortar aquí ]------------ [domingo de mayo 30 19:13:53 2021] ¡ERROR del kernel en lib/genalloc.c:518! [domingo 30 de mayo 19:13:53 2021] código de operación no válido: 0000 [#1] SMP PTI... [domingo 30 de mayo 19:13:53 2021] ERROR del kernel en lib/genalloc.c:518. ... [dom 30 de mayo 19:13:53 2021] RIP: 0010:gen_pool_free_owner+0xa8/0xb0 ... [dom 30 de mayo 19:13:53 2021] Seguimiento de llamadas: [dom 30 de mayo 19:13:53 2021 ] ------------[ cortar aquí ]------------ [domingo 30 de mayo 19:13:53 2021] pci_free_p2pmem+0x2b/0x70 [domingo 30 de mayo 19 :13:53 2021] pci_p2pmem_free_sgl+0x4f/0x80 [domingo 30 de mayo 19:13:53 2021] nvmet_req_free_sgls+0x1e/0x80 [nvmet] [domingo 30 de mayo 19:13:53 2021] ERROR del kernel en lib/genalloc.c: 518! [dom 30 de mayo 19:13:53 2021] nvmet_rdma_release_rsp+0x4e/0x1f0 [nvmet_rdma] [dom 30 de mayo 19:13:53 2021] nvmet_rdma_send_done+0x1c/0x60 [nvmet_rdma]
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.4

15 Mar 2024, 21:15

Type Values Removed Values Added
New CVE
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