#VU99739 Loop with unreachable exit condition ('infinite loop') in Linux kernel - CVE-2004-0554
Vulnerability identifier: #VU99739
Vulnerability risk: Low
CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID:
CWE-ID:
CWE-835
Exploitation vector: Local
Exploit availability: Yes
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to perform service disruption.
Linux kernel 2.4.x and 2.6.x for x86 allows local users to cause a denial of service (system crash), possibly via an infinite loop that triggers a signal handler with a certain sequence of fsave and frstor instructions, as originally demonstrated using a 'crash.c' program.
Mitigation
Install update from vendor's repository.
Vulnerable software versions
Linux kernel: All versions
External links
https://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000845
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15905
https://linuxreviews.org/news/2004-06-11_kernel_crash/index.html
https://lwn.net/Articles/91155/
https://marc.info/?l=bugtraq&m=108786114032681&w=2
https://marc.info/?l=bugtraq&m=108793699910896&w=2
https://marc.info/?l=linux-kernel&m=108681568931323&w=2
https://secunia.com/advisories/20162
https://secunia.com/advisories/20163
https://secunia.com/advisories/20202
https://secunia.com/advisories/20338
https://security.gentoo.org/glsa/glsa-200407-02.xml
https://www.debian.org/security/2006/dsa-1067
https://www.debian.org/security/2006/dsa-1069
https://www.debian.org/security/2006/dsa-1070
https://www.debian.org/security/2006/dsa-1082
https://www.kb.cert.org/vuls/id/973654
https://www.mandriva.com/security/advisories?name=MDKSA-2004:062
https://www.novell.com/linux/security/advisories/2004_17_kernel.html
https://www.redhat.com/support/errata/RHSA-2004-255.html
https://www.redhat.com/support/errata/RHSA-2004-260.html
https://www.securityfocus.com/bid/10538
https://www.trustix.net/errata/2004/0034/
https://exchange.xforce.ibmcloud.com/vulnerabilities/16412
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2915
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9426
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
