CVE-2025-21905: wifi: iwlwifi: limit printed string from FW file
Vulnerability summary
CVE-2025-21905 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.1% of scored vulnerabilities.
Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 74 · Related 58Timeline
- 01-04-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: limit printed string from FW file There's no guarantee here that the file is always with a NUL-termination, so reading the string may read beyond the end of the TLV. If that's the last TLV in the file, it can perhaps even read beyond the end of the file buffer. Fix that by limiting the print format to the size of the buffer we have.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% 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.
Ubuntu133 products
- linux< 5.4.0-216.236 | < 5.15.0-140.150 | < 6.8.0-84.84
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1146.156 | < 5.15.0-1084.91 | < 6.8.0-1039.41
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ aee1b6385e29e472ae5592b9652b750a29bf702e, < 38f0d398b6d7640d223db69df022c4a232f24774 | ≥ aee1b6385e29e472ae5592b9652b750a29bf702e, < c0e626f2b2390472afac52dfe72b29daf9ed8e1d | ≥ aee1b6385e29e472ae5592b9652b750a29bf702e, < 47616b82f2d42ea2060334746fed9a2988d845c9 | ≥ aee1b6385e29e472ae5592b9652b750a29bf702e, < 88ed69f924638c7503644e1f8eed1e976f3ffa7a | ≥ aee1b6385e29e472ae5592b9652b750a29bf702e, < b02f8d5a71c8571ccf77f285737c566db73ef5e5 | ≥ aee1b6385e29e472ae5592b9652b750a29bf702e, < f265e6031d0bc4fc40c4619cb42466722b46eaa9 | ≥ aee1b6385e29e472ae5592b9652b750a29bf702e, < 59cdda202829d1d6a095d233386870a59aff986f | ≥ aee1b6385e29e472ae5592b9652b750a29bf702e, < e0dc2c1bef722cbf16ae557690861e5f91208129 | 5.2
- linux_kernel≥ 5.2, < 5.4.291 | ≥ 5.5, < 5.10.235 | ≥ 5.11, < 5.15.179 | ≥ 5.16, < 6.1.131 | ≥ 6.2, < 6.6.83 | ≥ 6.7, < 6.12.19 | ≥ 6.13, < 6.13.7 | 6.14:rc1 | 6.14:rc2 | 6.14:rc3 | 6.14:rc4 | 6.14:rc5
Debian1 product
- linux< 6.1.133-1 | < 6.12.19-1
3 vendors · 136 products
