CVE-2025-71234 (GCVE-0-2025-71234)
Vulnerability from cvelistv5 – Published: 2026-02-18 14:53 – Updated: 2026-02-18 14:53
VLAI?
Title
wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5d810ba377eddee95d30766d360a14efbb3d1872
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 116f7bd8160c6b37d1c6939385abf90f6f6ed2f5 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9a0f3fa6ecd0c9c32dbc367a57482bbf7c7d25bf (git) |
||
{
"containers": {
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"product": "Linux",
"programFiles": [
"drivers/net/wireless/realtek/rtl8xxxu/core.c"
],
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"vendor": "Linux",
"versions": [
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"status": "affected",
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{
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},
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"drivers/net/wireless/realtek/rtl8xxxu/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.72",
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{
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"version": "6.18.11",
"versionType": "semver"
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add\n\nThe driver does not set hw-\u003esta_data_size, which causes mac80211 to\nallocate insufficient space for driver private station data in\n__sta_info_alloc(). When rtl8xxxu_sta_add() accesses members of\nstruct rtl8xxxu_sta_info through sta-\u003edrv_priv, this results in a\nslab-out-of-bounds write.\n\nKASAN report on RISC-V (VisionFive 2) with RTL8192EU adapter:\n\n BUG: KASAN: slab-out-of-bounds in rtl8xxxu_sta_add+0x31c/0x346\n Write of size 8 at addr ffffffd6d3e9ae88 by task kworker/u16:0/12\n\nSet hw-\u003esta_data_size to sizeof(struct rtl8xxxu_sta_info) during\nprobe, similar to how hw-\u003evif_data_size is configured. This ensures\nmac80211 allocates sufficient space for the driver\u0027s per-station\nprivate data.\n\nTested on StarFive VisionFive 2 v1.2A board."
}
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"providerMetadata": {
"dateUpdated": "2026-02-18T14:53:18.893Z",
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"url": "https://git.kernel.org/stable/c/116f7bd8160c6b37d1c6939385abf90f6f6ed2f5"
},
{
"url": "https://git.kernel.org/stable/c/9a0f3fa6ecd0c9c32dbc367a57482bbf7c7d25bf"
}
],
"title": "wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add",
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"cveId": "CVE-2025-71234",
"datePublished": "2026-02-18T14:53:18.893Z",
"dateReserved": "2026-02-18T14:25:13.845Z",
"dateUpdated": "2026-02-18T14:53:18.893Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-71234\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-18T16:22:30.190\",\"lastModified\":\"2026-02-18T17:51:53.510\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add\\n\\nThe driver does not set hw-\u003esta_data_size, which causes mac80211 to\\nallocate insufficient space for driver private station data in\\n__sta_info_alloc(). When rtl8xxxu_sta_add() accesses members of\\nstruct rtl8xxxu_sta_info through sta-\u003edrv_priv, this results in a\\nslab-out-of-bounds write.\\n\\nKASAN report on RISC-V (VisionFive 2) with RTL8192EU adapter:\\n\\n BUG: KASAN: slab-out-of-bounds in rtl8xxxu_sta_add+0x31c/0x346\\n Write of size 8 at addr ffffffd6d3e9ae88 by task kworker/u16:0/12\\n\\nSet hw-\u003esta_data_size to sizeof(struct rtl8xxxu_sta_info) during\\nprobe, similar to how hw-\u003evif_data_size is configured. This ensures\\nmac80211 allocates sufficient space for the driver\u0027s per-station\\nprivate data.\\n\\nTested on StarFive VisionFive 2 v1.2A board.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/116f7bd8160c6b37d1c6939385abf90f6f6ed2f5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5d810ba377eddee95d30766d360a14efbb3d1872\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9a0f3fa6ecd0c9c32dbc367a57482bbf7c7d25bf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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