wifi: mac80211: shut down RX BA session timer on teardown
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: shut down RX BA session timer on teardown Tearing down an RX BA session can leave the session timer queued on a freed tid_rx. Later timer-wheel processing and the timer callback itself then run against freed memory. An RX BAR handler can dereference tid_rx under RCU before teardown unpublishes it and stay in its read-side critical section while teardown deletes the session timer. The stale handler can then rearm the timer after timer_delete_sync() returns and before the RCU callback frees tid_rx. Use timer_shutdown_sync() so rearm attempts become ineffective once teardown starts. Keep reorder_timer unchanged: teardown marks the session removed under reorder_lock and its release path checks that state before rearming. session_timer has no equivalent guard because ieee80211_rx_h_ctrl() rearms it before taking reorder_lock.
CVE-2026-98707
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-2026-98707
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": "a87f736d942c86255e3088c606f0e3eab6bbf784",
"lessThan": "d0da6ab1fc53a68025929baf0947519c6c1684dc",
"versionType": "git"
},
{
"status": "affected",
"version": "a87f736d942c86255e3088c606f0e3eab6bbf784",
"lessThan": "7bb2a5bd4f07192fca35644fab7d49a17bfbc861",
"versionType": "git"
},
{
"status": "affected",
"version": "a87f736d942c86255e3088c606f0e3eab6bbf784",
"lessThan": "481f9230284c27052b59c587069f232c5d84779e",
"versionType": "git"
},
{
"status": "affected",
"version": "a87f736d942c86255e3088c606f0e3eab6bbf784",
"lessThan": "09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba",
"versionType": "git"
},
{
"status": "affected",
"version": "a87f736d942c86255e3088c606f0e3eab6bbf784",
"lessThan": "e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598e",
"versionType": "git"
}
],
"programFiles": [
"net/mac80211/agg-rx.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.36"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.36",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/mac80211/agg-rx.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98707
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48921 · Revision 1
- Added to Heist Feed
- Publisher date