CVE-2021-47257: net: ieee802154: fix null deref in parse dev addr
Vulnerability summary
CVE-2021-47257 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.6% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 3Timeline
- 21-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: net: ieee802154: fix null deref in parse dev addr Fix a logic error that could result in a null deref if the user sets the mode incorrectly for the given addr type.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
14%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.23% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu87 products
- linuxAll versions (No fix recorded) | < 4.15.0-156.163 | < 5.4.0-81.91
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1111.118 | < 5.4.0-1055.58
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ a26c5fd7622d4951425131d54a8c99f076fe2068, < 1f95741981c899c4724647291fec5faa3c777185 | ≥ a26c5fd7622d4951425131d54a8c99f076fe2068, < c6998ccfefa652bac3f9b236821e392af43efa1e | ≥ a26c5fd7622d4951425131d54a8c99f076fe2068, < 5f728ec65485625e30f46e5b4917ff023ad29ea0 | ≥ a26c5fd7622d4951425131d54a8c99f076fe2068, < d0f47648b87b6d5f204cb7f3cbce6d36dab85a67 | ≥ a26c5fd7622d4951425131d54a8c99f076fe2068, < c7836de2cadd88bc2f20f2c5a3d4ef4c73aef627 | ≥ a26c5fd7622d4951425131d54a8c99f076fe2068, < fdd51e34f45311ab6e48d2147cbc2904731b9993 | ≥ a26c5fd7622d4951425131d54a8c99f076fe2068, < 9fdd04918a452980631ecc499317881c1d120b70 | 4.4
- linux_kernel< 4.9.274 | ≥ 4.10, < 4.14.238 | ≥ 4.15, < 4.19.196 | ≥ 4.20, < 5.4.127 | ≥ 5.5, < 5.10.45 | ≥ 5.11, < 5.12.12 | 5.13:rc1 | 5.13:rc2 | 5.13:rc3 | 5.13:rc4
Debian1 product
- linux< 5.10.46-1
3 vendors · 90 products
