CVE-2023-53619
published 2025-10-07CVE-2023-53619: 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()…
PriorityP340high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.20%
10.3th percentile
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.
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.52-1 (bookworm) | linux 6.1.52-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 12f7a505331e6b2754684b509f2ac8f0011ce644 < 4ee69c91cb8f9ca144bc0861969e5a1a3c6152a7 | 4ee69c91cb8f9ca144bc0861969e5a1a3c6152a7 |
| linux | linux | >= 12f7a505331e6b2754684b509f2ac8f0011ce644 < 00716f25f9697d02a0d9bd622575c7c7321ba3d0 | 00716f25f9697d02a0d9bd622575c7c7321ba3d0 |
| linux | linux | >= 12f7a505331e6b2754684b509f2ac8f0011ce644 < 61c7a5256543ae7d24cd9d21853d514c8632e1e9 | 61c7a5256543ae7d24cd9d21853d514c8632e1e9 |
| linux | linux | >= 12f7a505331e6b2754684b509f2ac8f0011ce644 < 8289d422f5e484efe4a565fe18e862ecd621c175 | 8289d422f5e484efe4a565fe18e862ecd621c175 |
| linux | linux | >= 12f7a505331e6b2754684b509f2ac8f0011ce644 < 6f03ce2f1abcb9f9d0511e3659ca6eb60e39f566 | 6f03ce2f1abcb9f9d0511e3659ca6eb60e39f566 |
| linux | linux | >= 12f7a505331e6b2754684b509f2ac8f0011ce644 < 05561f822f27b9fa88fa5504ddec34bf38833034 | 05561f822f27b9fa88fa5504ddec34bf38833034 |
| linux | linux | >= 12f7a505331e6b2754684b509f2ac8f0011ce644 < fce5cc7cbd4b92f979bf02c9ec5fb69aaeba92d7 | fce5cc7cbd4b92f979bf02c9ec5fb69aaeba92d7 |
| linux | linux | >= 12f7a505331e6b2754684b509f2ac8f0011ce644 < 6eef7a2b933885a17679eb8ed0796ddf0ee5309b | 6eef7a2b933885a17679eb8ed0796ddf0ee5309b |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.191-1 | 5.10.191-1 |
| linux | linux_kernel | >= 0 < 6.1.52-1 | 6.1.52-1 |
| linux | linux_kernel | >= 0 < 6.4.4-1 | 6.4.4-1 |
| linux | linux_kernel | >= 0 < 6.4.4-1 | 6.4.4-1 |
| linux | linux_kernel | >= 3.6 < 4.14.322 | 4.14.322 |
| linux | linux_kernel | >= 4.15 < 4.19.291 | 4.19.291 |
| linux | linux_kernel | >= 4.20 < 5.4.251 | 5.4.251 |
| linux | linux_kernel | >= 5.11 < 5.15.121 | 5.15.121 |
| linux | linux_kernel | >= 5.16 < 6.1.39 | 6.1.39 |
| linux | linux_kernel | >= 5.5 < 5.10.188 | 5.10.188 |
| linux | linux_kernel | >= 6.2 < 6.4.4 | 6.4.4 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
kernel: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
vendor_redhat·2025-10-07·CVSS 7.8
CVE-2023-53619 [HIGH] CWE-416 kernel: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
kernel: 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_he
Debian
CVE-2023-53619: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
vendor_debian·2023·CVSS 7.8
CVE-2023-53619 [HIGH] CVE-2023-53619: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
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 con
VulDB
Linux Kernel up to 6.4.3 nf_conntrack_init_start memory corruption (Nessus ID 276910 / WID-SEC-2025-2229)
vuldb·2026-04-20·CVSS 7.8
CVE-2023-53619 [HIGH] Linux Kernel up to 6.4.3 nf_conntrack_init_start memory corruption (Nessus ID 276910 / WID-SEC-2025-2229)
A vulnerability labeled as critical has been found in Linux Kernel up to 6.4.3. This vulnerability affects the function nf_conntrack_init_start. Executing a manipulation can lead to memory corruption.
The identification of this vulnerability is CVE-2023-53619. The attack needs to be done within the local network. There is no exploit available.
The affected component should be upgraded.
GHSA
GHSA-fj8x-7xh8-225g: In the Linux kernel, the following vulnerability has been resolved:
netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
If nf_conntrack_in
ghsa_unreviewed·2025-10-07
CVE-2023-53619 [HIGH] CWE-416 GHSA-fj8x-7xh8-225g: In the Linux kernel, the following vulnerability has been resolved:
netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
If nf_conntrack_in
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
OSV
CVE-2023-53619: In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free If nf_conntrack_init
osv·2025-10-07·CVSS 7.8
CVE-2023-53619 [HIGH] CVE-2023-53619: In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free If nf_conntrack_init
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 con
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/00716f25f9697d02a0d9bd622575c7c7321ba3d0https://git.kernel.org/stable/c/05561f822f27b9fa88fa5504ddec34bf38833034https://git.kernel.org/stable/c/4ee69c91cb8f9ca144bc0861969e5a1a3c6152a7https://git.kernel.org/stable/c/61c7a5256543ae7d24cd9d21853d514c8632e1e9https://git.kernel.org/stable/c/6eef7a2b933885a17679eb8ed0796ddf0ee5309bhttps://git.kernel.org/stable/c/6f03ce2f1abcb9f9d0511e3659ca6eb60e39f566https://git.kernel.org/stable/c/8289d422f5e484efe4a565fe18e862ecd621c175https://git.kernel.org/stable/c/fce5cc7cbd4b92f979bf02c9ec5fb69aaeba92d7
2025-10-07
Published