CVE-2024-35898: netfilter: nf_tables: Fix potential data-race in __nft_flowtable_type_get()
First published: Sun May 19 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_flowtable_type_get() nft_unregister_flowtable_type() within nf_flow_inet_module_exit() can concurrent with __nft_flowtable_type_get() within nf_tables_newflowtable(). And thhere is not any protection when iterate over nf_tables_flowtables list in __nft_flowtable_type_get(). Therefore, there is pertential data-race of nf_tables_flowtables list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_flowtables list in __nft_flowtable_type_get(), and use rcu_read_lock() in the caller nft_flowtable_type_get() to protect the entire type query process.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.19.312 | 4.19.312 |
| redhat/kernel | <5.4.274 | 5.4.274 |
| redhat/kernel | <5.10.215 | 5.10.215 |
| redhat/kernel | <5.15.154 | 5.15.154 |
| redhat/kernel | <6.1.85 | 6.1.85 |
| redhat/kernel | <6.6.26 | 6.6.26 |
| redhat/kernel | <6.8.5 | 6.8.5 |
| redhat/kernel | <6.9 | 6.9 |
| Linux Kernel | >=4.16<4.19.312 | |
| Linux Kernel | >=4.20<5.4.274 | |
| Linux Kernel | >=5.5<5.10.215 | |
| Linux Kernel | >=5.11<5.15.154 | |
| Linux Kernel | >=5.16<6.1.85 | |
| Linux Kernel | >=6.2<6.6.26 | |
| Linux Kernel | >=6.7<6.8.5 | |
| Linux Kernel | =6.9-rc1 | |
| Linux Kernel | =6.9-rc2 | |
| Debian Linux | =10.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.21-1 6.12.22-1 |
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Reference Links
- https://git.kernel.org/stable/c/24225011d81b471acc0e1e315b7d9905459a6304
- https://git.kernel.org/stable/c/2485bcfe05ee3cf9ca8923a94fa2e456924c79c8
- https://git.kernel.org/stable/c/69d1fe14a680042ec913f22196b58e2c8ff1b007
- https://git.kernel.org/stable/c/8b891153b2e4dc0ca9d9dab8f619d49c740813df
- https://git.kernel.org/stable/c/940d41caa71f0d3a52df2fde5fada524a993e331
- https://git.kernel.org/stable/c/9b5b7708ec2be21dd7ef8ca0e3abe4ae9f3b083b
- https://git.kernel.org/stable/c/a347bc8e6251eaee4b619da28020641eb5b0dd77
- https://git.kernel.org/stable/c/e684b1674fd1ca4361812a491242ae871d6b2859
- https://launchpad.net/bugs/cve/CVE-2024-35898
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35898
- https://nvd.nist.gov/vuln/detail/CVE-2024-35898
- https://security-tracker.debian.org/tracker/CVE-2024-35898
- https://ubuntu.com/security/CVE-2024-35898
- https://access.redhat.com/security/cve/CVE-2024-35898
- https://lore.kernel.org/linux-cve-announce/2024051951-CVE-2024-35898-a10e@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2281670
- https://access.redhat.com/errata/RHSA-2024:4533
- https://access.redhat.com/errata/RHSA-2024:4554
- https://access.redhat.com/errata/RHSA-2024:5256
- https://access.redhat.com/errata/RHSA-2024:5257
- https://access.redhat.com/errata/RHSA-2024:5928
- https://access.redhat.com/errata/RHSA-2024:6753
- https://access.redhat.com/errata/RHSA-2024:6993
- https://access.redhat.com/errata/RHSA-2024:8870
- https://access.redhat.com/errata/RHSA-2024:8856
- https://bugzilla.redhat.com/show_bug.cgi?id=2281669
- https://git.kernel.org/linus/24225011d81b471acc0e1e315b7d9905459a6304
Frequently Asked Questions
What is the severity of CVE-2024-35898?
CVE-2024-35898 has been classified with a medium severity level due to its potential to cause data races in the Linux kernel.
How do I fix CVE-2024-35898?
To fix CVE-2024-35898, update your Linux kernel to one of the patched versions: 4.19.312, 5.4.274, 5.10.215, 5.15.154, 6.1.85, 6.6.26, 6.8.5, or 6.9.
Which Linux distributions are affected by CVE-2024-35898?
CVE-2024-35898 affects various versions of the Linux kernel used in Red Hat and Debian distributions.
What components are impacted by CVE-2024-35898?
CVE-2024-35898 specifically impacts the netfilter subsystem within the Linux kernel.
Is CVE-2024-35898 a remote vulnerability?
CVE-2024-35898 is not categorized as a remote vulnerability, but it involves potential data races that could affect system stability.
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