Description
Linux kernel 2.2.1 through 2.2.19, and 2.4.1 through 2.4.10, allows local users to cause a denial of service via a series of deeply nested symlinks, which causes the kernel to spend extra time when trying to access the link.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Linux Kernel 2.2/2.4 - Deep Symbolic Link Denial of Service EDB-21122 · dos · Oct 18, 2001 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- IMNX-2001-70-035-01 vendor-advisory
- ESA-20011019-02 vendor-advisory
- 20011018 Flaws in recent Linux kernels mailing-list
- 20011019 TSLSA-2001-0028 mailing-list
- SuSE-SA:2001:036 vendor-advisory
- MDKSA-2001:082 vendor-advisory
- 3444 vdb-entry
- MDKSA-2001:079 vendor-advisory
- linux-multiple-symlink-dos(7312) vdb-entry