CVE-2021-47486 (GCVE-0-2021-47486)

Vulnerability from cvelistv5 – Published: 2024-05-22 08:19 – Updated: 2026-05-11 13:55
VLAI
Title
riscv, bpf: Fix potential NULL dereference
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-22 14:16 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa , < cac6b043cea3e120f4fccec16f7381747cbfdc0d (git)
Affected: ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa , < e1b80a5ebe5431caeb20f88c32d4a024777a2d41 (git)
Affected: ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa , < 27de809a3d83a6199664479ebb19712533d6fd9b (git)
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Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.77 , ≤ 5.10.* (semver)
Unaffected: 5.14.16 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
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linux linux_kernel Affected: ca6cb5447cec , < cac6b043cea3 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Affected: 5.7
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.10.77 , ≤ 5.11 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.14.16 , ≤ 5.15 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.15 , ≤ * (custom)
Affected: ca6cb5447cec , < e1b80a5ebe54 (custom)
Affected: ca6cb5447cec , ≤ 27de809a3d83 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.