netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over nf_tables_expressions list in __nft_expr_type_get(). Therefore, there is potential data-race of nf_tables_expressions list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_expressions list in __nft_expr_type_get(), and use rcu_read_lock() in the caller nft_expr_type_get() to protect the entire type query process.
CVE-2024-27020
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-2024-27020
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": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
"lessThan": "939109c0a8e2a006a6cc8209e262d25065f4403a",
"versionType": "git"
},
{
"status": "affected",
"version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
"lessThan": "b38a133d37fa421c8447b383d788c9cc6f5cb34c",
"versionType": "git"
},
{
"status": "affected",
"version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
"lessThan": "934e66e231cff2b18faa2c8aad0b8cec13957e05",
"versionType": "git"
},
{
"status": "affected",
"version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
"lessThan": "0b6de00206adbbfc6373b3ae38d2a6f197987907",
"versionType": "git"
},
{
"status": "affected",
"version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
"lessThan": "8d56bad42ac4c43c6c72ddd6a654a2628bf839c5",
"versionType": "git"
},
{
"status": "affected",
"version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
"lessThan": "a9ebf340d123ae12582210407f879d6a5a1bc25b",
"versionType": "git"
},
{
"status": "affected",
"version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
"lessThan": "01f1a678b05ade4b1248019c2dcca773aebbeb7f",
"versionType": "git"
},
{
"status": "affected",
"version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
"lessThan": "f969eb84ce482331a991079ab7a5c4dc3b7f89bf",
"versionType": "git"
}
],
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.313",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.275",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.216",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.157",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.88",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.29",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.8.8",
"versionType": "semver",
"lessThanOrEqual": "6.8.*"
},
{
"status": "unaffected",
"version": "6.9",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-27020
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26477 · Revision 1
- Added to Heist Feed
- Publisher date