netfilter: bpf: defer hook memory release until rcu readers are done
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.130, 6.12.78, 6.18.20, 6.19.10
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: bpf: defer hook memory release until rcu readers are done Yiming Qian reports UaF when concurrent process is dumping hooks via nfnetlink_hooks: BUG: KASAN: slab-use-after-free in nfnl_hook_dump_one.isra.0+0xe71/0x10f0 Read of size 8 at addr ffff888003edbf88 by task poc/79 Call Trace: <TASK> nfnl_hook_dump_one.isra.0+0xe71/0x10f0 netlink_dump+0x554/0x12b0 nfnl_hook_get+0x176/0x230 [..] Defer release until after concurrent readers have completed.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 84601d6ee68ae820dec97450934797046d62db4b · fixed in d016c216bc75c45128160593a77b864a04dbe7c0; From 84601d6ee68ae820dec97450934797046d62db4b · fixed in cb2bf5efdb02a2a59faf603604a1066e8266f349; From 84601d6ee68ae820dec97450934797046d62db4b · fixed in c25e0dec366ae99b7264324ce3c7cbaea34691f9; From 84601d6ee68ae820dec97450934797046d62db4b · fixed in 54244d54a971c26a0cd0a9073460ff71f3c51b32; From 84601d6ee68ae820dec97450934797046d62db4b · fixed in 24f90fa3994b992d1a09003a3db2599330a5232a
- Linux Linux
6.4
- KernelLinux
From 6.4.0 · fixed in 6.6.130; From 6.7.0 · fixed in 6.12.78; From 6.13.0 · fixed in 6.18.20; From 6.19.0 · fixed in 6.19.10