CVE-2023-53619
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free If nf_conntrack_init_start() fails (for example due to a register_nf_conntrack_bpf() failure), the nf_conntrack_helper_fini() clean-up path frees the nf_ct_helper_hash map. When built with NF_CONNTRACK=y, further netfilter modules (e.g: netfilter_conntrack_ftp) can still be loaded and call nf_conntrack_helpers_register(), independently of whether nf_conntrack initialized correctly. This accesses the nf_ct_helper_hash dangling pointer and causes a uaf, possibly leading to random memory corruption. This patch guards nf_conntrack_helper_register() from accessing a freed or uninitialized nf_ct_helper_hash pointer and fixes possible uses-after-free when loading a conntrack module.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 12f7a505331e6b2754684b509f2ac8f0011ce644 | affected | git | 4ee69c91cb8f9ca144bc0861969e5a1a3c6152a7 | Unavailable | None listed |
| 12f7a505331e6b2754684b509f2ac8f0011ce644 | affected | git | 00716f25f9697d02a0d9bd622575c7c7321ba3d0 | Unavailable | None listed |
| 12f7a505331e6b2754684b509f2ac8f0011ce644 | affected | git | 61c7a5256543ae7d24cd9d21853d514c8632e1e9 | Unavailable | None listed |
| 12f7a505331e6b2754684b509f2ac8f0011ce644 | affected | git | 8289d422f5e484efe4a565fe18e862ecd621c175 | Unavailable | None listed |
| 12f7a505331e6b2754684b509f2ac8f0011ce644 | affected | git | 6f03ce2f1abcb9f9d0511e3659ca6eb60e39f566 | Unavailable | None listed |
| 12f7a505331e6b2754684b509f2ac8f0011ce644 | affected | git | 05561f822f27b9fa88fa5504ddec34bf38833034 | Unavailable | None listed |
| 12f7a505331e6b2754684b509f2ac8f0011ce644 | affected | git | fce5cc7cbd4b92f979bf02c9ec5fb69aaeba92d7 | Unavailable | None listed |
| 12f7a505331e6b2754684b509f2ac8f0011ce644 | affected | git | 6eef7a2b933885a17679eb8ed0796ddf0ee5309b | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.6 | Unavailable | None listed |
| 4.14.322 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.291 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.251 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.188 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.121 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.39 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.4.4 | unaffected | semver | Unavailable | 6.4.* | None listed |
| 6.5 | unaffected | original_commit_for_fix | Unavailable | * | None listed |