wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.12.72, 6.18.11, 6.19.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add The driver does not set hw->sta_data_size, which causes mac80211 to allocate insufficient space for driver private station data in __sta_info_alloc(). When rtl8xxxu_sta_add() accesses members of struct rtl8xxxu_sta_info through sta->drv_priv, this results in a slab-out-of-bounds write. KASAN report on RISC-V (VisionFive 2) with RTL8192EU adapter: BUG: KASAN: slab-out-of-bounds in rtl8xxxu_sta_add+0x31c/0x346 Write of size 8 at addr ffffffd6d3e9ae88 by task kworker/u16:0/12 Set hw->sta_data_size to sizeof(struct rtl8xxxu_sta_info) during probe, similar to how hw->vif_data_size is configured. This ensures mac80211 allocates sufficient space for the driver's per-station private data. Tested on StarFive VisionFive 2 v1.2A board.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From eef55f1545c92c7181d5083453dee1296298ad3e · fixed in 5d810ba377eddee95d30766d360a14efbb3d1872; From eef55f1545c92c7181d5083453dee1296298ad3e · fixed in 116f7bd8160c6b37d1c6939385abf90f6f6ed2f5; From eef55f1545c92c7181d5083453dee1296298ad3e · fixed in 9a0f3fa6ecd0c9c32dbc367a57482bbf7c7d25bf; From eef55f1545c92c7181d5083453dee1296298ad3e · fixed in 86c946bcc00f6390ef65e9614ae60a9377e454f8
- Linux Linux
6.9
- KernelLinux
From 6.9.0 · fixed in 6.12.72; From 6.13.0 · fixed in 6.18.11; From 6.19.0 · fixed in 6.19.1