rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy
In the Linux kernel, the following vulnerability has been resolved: rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acct(2). The per-netns structure can be obtained from the table->data using container_of(), then the 'net' one can be retrieved from the listen socket (if available).
CVE-2025-21635
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-2025-21635
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": "c6a58ffed53612be86b758df1cdb0b0f4305e9cb",
"lessThan": "33b3e09a489a31b30342b77cc55290f025d95c7e",
"versionType": "git"
},
{
"status": "affected",
"version": "c6a58ffed53612be86b758df1cdb0b0f4305e9cb",
"lessThan": "de8d6de0ee27be4b2b1e5b06f04aeacbabbba492",
"versionType": "git"
},
{
"status": "affected",
"version": "c6a58ffed53612be86b758df1cdb0b0f4305e9cb",
"lessThan": "7f5611cbc4871c7fb1ad36c2e5a9edad63dca95c",
"versionType": "git"
}
],
"programFiles": [
"net/rds/tcp.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.10",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/rds/tcp.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21635
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #45938 · Revision 1
- Added to Heist Feed
- Publisher date