- 5.5MediumCVSS base score
- 0.24%Exploitation in 30 daysEPSS · top 85% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Fix NULL pointer dereference for ->get_features() get_features ops of pci_epc_ops may return NULL, causing NULL pointer dereference in pci_epf_test_alloc_space function. Let us add a check for pci_epc_feature pointer in pci_epf_test_bind before we access it to avoid any such NULL pointer dereference and return -ENOTSUPP in case pci_epc_feature is not found. When the patch is not applied and EPC features is not implemented in the platform driver, we see the following dump due to kernel NULL pointer dereference. Call trace: pci_epf_test_bind+0xf4/0x388 pci_epf_bind+0x3c/0x80 pci_epc_epf_link+0xa8/0xcc configfs_symlink+0x1a4/0x48c vfs_symlink+0x104/0x184 do_symlinkat+0x80/0xd4 __arm64_sys_symlinkat+0x1c/0x24 el0_svc_common.constprop.3+0xb8/0x170 el0_svc_handler+0x70/0x88 el0_svc+0x8/0x640 Code: d2800581 b9403ab9 f9404ebb 8b394f60 (f9400400) ---[ end trace a438e3c5a24f9df0 ]---
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 2c04c5b8eef797dca99699cfb55ff42dd3c12c23 – < bbed83d7060e07a5d309104d25a00f0a24441428
- affected 2c04c5b8eef797dca99699cfb55ff42dd3c12c23 – < 679ebad058b8168f10e63876d63b0877fd2fe784
- affected 2c04c5b8eef797dca99699cfb55ff42dd3c12c23 – < 0169d4f0bee44fdfef908c13ed21fcb326c38695
- affected 2c04c5b8eef797dca99699cfb55ff42dd3c12c23 – < 6613bc2301ba291a1c5a90e1dc24cf3edf223c03
- affected 5.1
- unaffected < 5.1
- unaffected 5.10.38 – ≤ 5.10.*
- unaffected 5.11.22 – ≤ 5.11.*
- unaffected 5.12.5 – ≤ 5.12.*
- unaffected 5.13 – ≤ *
References
References4
- https://git.kernel.org/stable/c/bbed83d7060e07a5d309104d25a00f0a24441428 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/679ebad058b8168f10e63876d63b0877fd2fe784 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/0169d4f0bee44fdfef908c13ed21fcb326c38695 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/6613bc2301ba291a1c5a90e1dc24cf3edf223c03 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-33653 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-47005)Record last updated .