CVE-2026-98160staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init()
- 5.5MediumCVSS base score
- 0.11%Exploitation in 30 daysEPSS · top 98% 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: staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init() padapter->HalData is allocated via vzalloc(), but incorrectly freed using kfree() in the rtw_sdio_if1_init() error path. Using kfree() to release this vmalloc-backed buffer can lead to memory corruption. Use rtw_hal_data_deinit() to pair the free correctly and free HalData with vfree(). The bug was first flagged by an experimental static analysis tool we are developing for kernel memory-management bugs. Manual inspection confirms that the issue is still present in current mainline. An x86_64 allyesconfig build showed no new warnings. As we do not have suitable RTL8723BS SDIO hardware to test with, no runtime testing was able to be performed.
Timeline
ID reserved
By Linux
Published
- 24 days later
· 24 days 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 |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.11% · top 98% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < ff6d1ba247b5c62bdb678f1069abc86ad88a1402
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < d6158333d630a1b21d8914feaf77a6f5deb185d9
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 6c017ab2b0e1b60b5be94636c94720347213d78b
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 4520d673d49dabfd42c008a33889251025f7d6d5
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 423574feaed192063ef0cd0813fb85425f39e539
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 737c928ff5092d7e55128a232c231248fc993777
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 911190f0b9511c3c81f2f2484414c1ae26f636b3
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 264676418b726baca7be49171e306b6aa05cceb0
- affected 4.12
- unaffected < 4.12
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/ff6d1ba247b5c62bdb678f1069abc86ad88a1402 (opens in a new tab)
- https://git.kernel.org/stable/c/d6158333d630a1b21d8914feaf77a6f5deb185d9 (opens in a new tab)
- https://git.kernel.org/stable/c/6c017ab2b0e1b60b5be94636c94720347213d78b (opens in a new tab)
- https://git.kernel.org/stable/c/4520d673d49dabfd42c008a33889251025f7d6d5 (opens in a new tab)
- https://git.kernel.org/stable/c/423574feaed192063ef0cd0813fb85425f39e539 (opens in a new tab)
- https://git.kernel.org/stable/c/737c928ff5092d7e55128a232c231248fc993777 (opens in a new tab)
- https://git.kernel.org/stable/c/911190f0b9511c3c81f2f2484414c1ae26f636b3 (opens in a new tab)
- https://git.kernel.org/stable/c/264676418b726baca7be49171e306b6aa05cceb0 (opens in a new tab)
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-2026-87060 (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-2026-98160)Record last updated .