CVE-2026-43386: staging: rtl8723bs: fix potential out-of-bounds read in rtw_restruct_wmm_ie
Vulnerability summary
CVE-2026-43386 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% 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 34 · Related 34Timeline
- 08-05-2026PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix potential out-of-bounds read in rtw_restruct_wmm_ie The current code checks 'i + 5 < in_len' at the end of the if statement. However, it accesses 'in_ie[i + 5]' before that check, which can lead to an out-of-bounds read. Move the length check to the beginning of the conditional to ensure the index is within bounds before accessing the array.
CVSS metrics
3 scores · 3 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
EPSS trend
Probability
0.13%
Chance of exploitation in the next 30 days
Percentile
2%
Versus all other CVEs
30-day change
Decrease -0.04 pp
From 0.17% 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.
Ubuntu156 products
- linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 6ff2243d5e05a5239e39d4ba61d96b0ea3bf7259 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 12cc6e8f8d4245b7b5a408c6fc8ab1d098d67020 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 209644e25757c499e1c1f08c071ea0386d4448b6 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 768f25613a9fe6766d15a4a72979657adfc1c6d8 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < e14a1148f02e8cf1ca380d57e4b95ca36c97f45d | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 4dd2d9cf563c54e09d5f7eacf95c5b8f538b513b | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < d97fc1b29513010b60fde874c7f0ba816744e18c | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < a75281626fc8fa6dc6c9cc314ee423e8bc45203b | 4.12
- linux_kernel≥ 4.12, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.167 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.78 | ≥ 6.13, < 6.18.19 | ≥ 6.19, < 6.19.9 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3
Debian1 product
- linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.10-1
3 vendors · 159 products
