Fix CVE(s): CVE-2026-73282, CVE-2026-73283
* SECURITY UPDATE: use-after-free in the ssh client when a remote forwarding is added over the multiplexing socket - debian/patches/CVE-2026-73282.patch: pass a heap-allocated index instead of a pointer into options.remote_forwards[] to ssh_confirm_remote_forward() in ssh.c, so a concurrent add_remote_forward() reallocation cannot leave the pending global request confirmation holding a dangling pointer. - CVE-2026-73282 * SECURITY UPDATE: authorized_keys restrict keyword did not cover tunnel forwarding - debian/patches/CVE-2026-73283.patch: also reject tunnel device forwarding in server_request_tun() (serverloop.c) when the authenticating key carries the restrict option. - CVE-2026-73283
- Products
- openssh-client, openssh-server, openssh-sftp-server, openssh-tests, ssh, ssh-askpass-gnome
- Affected versions
- Not specified
- Fixed versions
- 1:7.9p1-10+deb10u4+tuxcare.els7
- CVEs
- CVE-2026-73282, CVE-2026-73283
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:22 UTC · Revision 1
Source evidence
Fix CVE(s): CVE-2026-73282, CVE-2026-73283
core-osv · Original sourcePublished 26 Aug 2026, 15:06 UTC
* SECURITY UPDATE: use-after-free in the ssh client when a remote forwarding is added over the multiplexing socket - debian/patches/CVE-2026-73282.patch: pass a heap-allocated index instead of a pointer into options.remote_forwards[] to ssh_confirm_remote_forward() in ssh.c, so a concurrent add_remote_forward() reallocation cannot leave the pending global request confirmation holding a dangling pointer. - CVE-2026-73282 * SECURITY UPDATE: authorized_keys restrict keyword did not cover tunnel forwarding - debian/patches/CVE-2026-73283.patch: also reject tunnel device forwarding in server_request_tun() (serverloop.c) when the authenticating key carries the restrict option. - CVE-2026-73283
osv:CLSA-2026-1787756777
openssh-client
Fixed versions: 1:7.9p1-10+deb10u4+tuxcare.els7
openssh-server
Fixed versions: 1:7.9p1-10+deb10u4+tuxcare.els7
openssh-sftp-server
Fixed versions: 1:7.9p1-10+deb10u4+tuxcare.els7
openssh-tests
Fixed versions: 1:7.9p1-10+deb10u4+tuxcare.els7
ssh
Fixed versions: 1:7.9p1-10+deb10u4+tuxcare.els7
ssh-askpass-gnome
Fixed versions: 1:7.9p1-10+deb10u4+tuxcare.els7
Complete source record
{
"id": "8e1cdba110c9130d648c46d6e02eecb572754a46421b3b383fd0f4813b8392db",
"url": "https://osv.dev/vulnerability/CLSA-2026-1787756777",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-73282, CVE-2026-73283",
"summary": "* SECURITY UPDATE: use-after-free in the ssh client when a remote forwarding is added over the multiplexing socket - debian/patches/CVE-2026-73282.patch: pass a heap-allocated index instead of a pointer into options.remote_forwards[] to ssh_confirm_remote_forward() in ssh.c, so a concurrent add_remote_forward() reallocation cannot leave the pending global request confirmation holding a dangling pointer. - CVE-2026-73282 * SECURITY UPDATE: authorized_keys restrict keyword did not cover tunnel forwarding - debian/patches/CVE-2026-73283.patch: also reject tunnel device forwarding in server_request_tun() (serverloop.c) when the authenticating key carries the restrict option. - CVE-2026-73283",
"evidence": "osv:CLSA-2026-1787756777",
"products": [
{
"name": {
"value": "openssh-client",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:7.9p1-10+deb10u4+tuxcare.els7",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssh-server",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:7.9p1-10+deb10u4+tuxcare.els7",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssh-sftp-server",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:7.9p1-10+deb10u4+tuxcare.els7",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssh-tests",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:7.9p1-10+deb10u4+tuxcare.els7",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ssh",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:7.9p1-10+deb10u4+tuxcare.els7",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ssh-askpass-gnome",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:7.9p1-10+deb10u4+tuxcare.els7",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1787756777",
"aliases": [
"CLSA-2026-1787756777"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:7.9p1-10+deb10u4+tuxcare.els7"
}
]
}
],
"package": {
"name": "openssh-client",
"purl": "pkg:deb/tuxcare/openssh-client?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787756777.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:7.9p1-10+deb10u4+tuxcare.els7"
}
]
}
],
"package": {
"name": "openssh-server",
"purl": "pkg:deb/tuxcare/openssh-server?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787756777.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:7.9p1-10+deb10u4+tuxcare.els7"
}
]
}
],
"package": {
"name": "openssh-sftp-server",
"purl": "pkg:deb/tuxcare/openssh-sftp-server?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787756777.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:7.9p1-10+deb10u4+tuxcare.els7"
}
]
}
],
"package": {
"name": "openssh-tests",
"purl": "pkg:deb/tuxcare/openssh-tests?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787756777.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:7.9p1-10+deb10u4+tuxcare.els7"
}
]
}
],
"package": {
"name": "ssh",
"purl": "pkg:deb/tuxcare/ssh?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787756777.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:7.9p1-10+deb10u4+tuxcare.els7"
}
]
}
],
"package": {
"name": "ssh-askpass-gnome",
"purl": "pkg:deb/tuxcare/ssh-askpass-gnome?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787756777.json"
}
}
],
"modified": "2026-10-26T09:31:53.071414879Z",
"provider": "osv",
"upstream": [
"CVE-2026-73282",
"CVE-2026-73283"
],
"references": [
"https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1787756777.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-73282",
"https://nvd.nist.gov/vuln/detail/CVE-2026-73283"
]
},
"related_cves": [
{
"value": "CVE-2026-73282",
"evidence": "/upstream"
},
{
"value": "CVE-2026-73283",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448823,
"published_at": "2026-08-26T15:06:36+00:00"
}