CVE-2021-47486riscv, bpf: Fix potential NULL dereference
- 7.5HighCVSS base score
- 0.68%Exploitation in 30 daysEPSS · top 47% 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: riscv, bpf: Fix potential NULL dereference The bpf_jit_binary_free() function requires a non-NULL argument. When the RISC-V BPF JIT fails to converge in NR_JIT_ITERATIONS steps, jit_data->header will be NULL, which triggers a NULL dereference. Avoid this by checking the argument, prior calling the function.
Timeline
ID reserved
By Linux
Published
- 24 months later
· 24 months 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.68% · top 47% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa – < cac6b043cea3e120f4fccec16f7381747cbfdc0d
- affected ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa – < e1b80a5ebe5431caeb20f88c32d4a024777a2d41
- affected ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa – < 27de809a3d83a6199664479ebb19712533d6fd9b
- affected 5.7
- unaffected < 5.7
- unaffected 5.10.77 – ≤ 5.10.*
- unaffected 5.14.16 – ≤ 5.14.*
- unaffected 5.15 – ≤ *
References
References3
- https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b (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-2021-34491 (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-2021-47486)Record last updated .