wifi: rsi: validate beacon length before fixed buffer copy
In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: validate beacon length before fixed buffer copy rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment. Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.
CVE-2026-93802
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93802
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "d26a9559403c7c3ec3b430f5825bc22c3d40abdb",
"lessThan": "795ba65f46fe44061f1195951c122cc8ec685d44",
"versionType": "git"
},
{
"status": "affected",
"version": "d26a9559403c7c3ec3b430f5825bc22c3d40abdb",
"lessThan": "66a964432b2758a4cf69962366e37581d6e70632",
"versionType": "git"
},
{
"status": "affected",
"version": "d26a9559403c7c3ec3b430f5825bc22c3d40abdb",
"lessThan": "7f99742c3c2801f8033d8b7a0a58254d7f24fb1e",
"versionType": "git"
},
{
"status": "affected",
"version": "d26a9559403c7c3ec3b430f5825bc22c3d40abdb",
"lessThan": "f08d7f3c916335a0e539f1c45c130615967fac47",
"versionType": "git"
},
{
"status": "affected",
"version": "d26a9559403c7c3ec3b430f5825bc22c3d40abdb",
"lessThan": "87710ad633ce4588aec88611d0d0745eb33a6991",
"versionType": "git"
},
{
"status": "affected",
"version": "d26a9559403c7c3ec3b430f5825bc22c3d40abdb",
"lessThan": "266f195d5a14eec6c482fd09fbc924584c3371a7",
"versionType": "git"
},
{
"status": "affected",
"version": "d26a9559403c7c3ec3b430f5825bc22c3d40abdb",
"lessThan": "8ecdeb8b8a33b22c597299043c0dcfce50beb9ea",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/rsi/rsi_91x_hal.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/rsi/rsi_91x_hal.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93802
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #8278 · Revision 1
- Added to Heist Feed
- Publisher date