smb: client: cancel reconnect work in clean_demultiplex_info()
In the Linux kernel, the following vulnerability has been resolved: smb: client: cancel reconnect work in clean_demultiplex_info() clean_demultiplex_info() cancels server->echo delayed work but not server->reconnect, which can cause a use-after-free when the demultiplex thread exits while a reconnect work is still queued: cifs_demultiplex_thread() cifs_readv_from_socket() cifs_reconnect() __cifs_reconnect() cifs_queue_server_reconn() mod_delayed_work(cifsiod_wq, &server->reconnect, 0) clean_demultiplex_info() cancel_delayed_work_sync(&server->echo) // echo canceled // reconnect NOT canceled kfree_sensitive(server) // server freed ...later, on cifsiod_wq: smb2_reconnect_server() server->srv_count // UAF read of freed server Fix this by canceling server->reconnect delayed work in clean_demultiplex_info() before the server is freed, the same way cifs_put_tcp_session() already does.
CVE-2026-98175
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-2026-98175
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": "53e0e11efe9289535b060a51d4cf37c25e0d0f2b",
"lessThan": "180380272f116dbd2b0354c5c7872e112e519149",
"versionType": "git"
},
{
"status": "affected",
"version": "53e0e11efe9289535b060a51d4cf37c25e0d0f2b",
"lessThan": "e3f6a779433d13aafb5edab59e4f9313051e8a52",
"versionType": "git"
},
{
"status": "affected",
"version": "53e0e11efe9289535b060a51d4cf37c25e0d0f2b",
"lessThan": "7ab9ceedd860216fb97f2d8574cbe58b8906f42a",
"versionType": "git"
},
{
"status": "affected",
"version": "53e0e11efe9289535b060a51d4cf37c25e0d0f2b",
"lessThan": "2e5103e11a17c274715dd56cf185eeedccf686b8",
"versionType": "git"
},
{
"status": "affected",
"version": "53e0e11efe9289535b060a51d4cf37c25e0d0f2b",
"lessThan": "c65eae6f61d1778ff7a82e4aae4080e26f486af1",
"versionType": "git"
},
{
"status": "affected",
"version": "e008a962311a875a828cbae54b43285858aaa6c8",
"versionType": "git"
},
{
"status": "affected",
"version": "123b228a09b90b50b0a9d6eb8294cf0c42efc029",
"versionType": "git"
},
{
"status": "affected",
"version": "0ba4c6eaaacbcc4b18f51bb3b1567c65a8fecca9",
"versionType": "git"
},
{
"status": "affected",
"version": "d0d2a4c82942e2f51e4984beea1f7e5a994bd06c",
"versionType": "git"
},
{
"status": "affected",
"version": "15a12fbbf365a483b1c19f9caeb707b3bea77e10",
"versionType": "git"
},
{
"status": "affected",
"version": "f0b715409cb9cf7e21e690f9b163047739761962",
"versionType": "git"
},
{
"status": "affected",
"version": "ff04da387c10b6bf7b510392742c8cd46c130fd6",
"versionType": "git"
},
{
"status": "affected",
"version": "48f9526f4dcb4b132fe0dc2450835311e3b013a6",
"versionType": "git"
},
{
"status": "affected",
"version": "3.10.107",
"lessThan": "3.11",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.12.70",
"lessThan": "3.13",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.16.42",
"lessThan": "3.17",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.18.47",
"lessThan": "3.19",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.1.38",
"lessThan": "4.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.4.40",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.8.16",
"lessThan": "4.9",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.9.1",
"lessThan": "4.10",
"versionType": "semver"
}
],
"programFiles": [
"fs/smb/client/connect.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/client/connect.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98175
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #38258 · Revision 1
- Added to Heist Feed
- Publisher date