sctp: diag: reject stale associations in dump_one path
In the Linux kernel, the following vulnerability has been resolved: sctp: diag: reject stale associations in dump_one path The SCTP exact sock_diag lookup can hold a transport reference, block on lock_sock(sk), and then resume after sctp_association_free() has marked the association dead and freed its bind address list. When that happens, inet_assoc_attr_size() and inet_diag_msg_sctpasoc_fill() can still dereference association state that is no longer valid for reporting. In particular, inet_diag_msg_sctpasoc_fill() may read an empty bind-address list as a real sctp_sockaddr_entry and trigger an out-of-bounds read from unrelated association memory. Reject the association after taking the socket lock if it has been reaped or detached from the endpoint, and report the lookup as stale. This keeps the exact dump-one path from formatting torn association state.
CVE-2026-52917
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-2026-52917
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": "8f840e47f190cbe61a96945c13e9551048d42cef",
"lessThan": "6657af827e21883ae90693e42e7f59a6aab690b5",
"versionType": "git"
},
{
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"lessThan": "b2be72d401833194917e44fbd8d8144bb4f2db16",
"versionType": "git"
},
{
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"lessThan": "5425de8bd6e9fe5bd67d158e3348171ae7510117",
"versionType": "git"
},
{
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"lessThan": "e97c2a535e23ed0fdd2660993fb3f10d9535c9bc",
"versionType": "git"
},
{
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"lessThan": "480f754580b5686b928977d16a59f20cef83ff01",
"versionType": "git"
},
{
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"lessThan": "78c4f964b2f94e405721c093773f6250e1e676b2",
"versionType": "git"
},
{
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"lessThan": "f5af203dec6e0e7a6090fcc2130e9f3901bfc84d",
"versionType": "git"
},
{
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"lessThan": "5eba3e48d78edd7551b992cb7ba687019b3a78da",
"versionType": "git"
}
],
"programFiles": [
"net/sctp/diag.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.94",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.36",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.13",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/sctp/diag.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-52917
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40692 · Revision 1
- Added to Heist Feed
- Publisher date