#VU95668 Out-of-bounds write in Linux kernel - CVE-2001-1399

Vulnerability identifier: #VU95668

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2001-1399

CWE-ID: CWE-787

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to corrupt data.

Certain operations in Linux kernel before 2.2.19 on the x86 architecture copy the wrong number of bytes, which might allow attackers to modify memory, aka 'User access asm bug on x86.'

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://marc.info/?l=bugtraq&m=98575345009963&w=2
https://marc.info/?l=bugtraq&m=98637996127004&w=2
https://marc.info/?l=bugtraq&m=98653252326445&w=2
https://marc.info/?l=bugtraq&m=98684172109474&w=2
https://marc.info/?l=bugtraq&m=98759029811377&w=2
https://marc.info/?l=bugtraq&m=98775114228203&w=2
https://marc.info/?l=bugtraq&m=99013830726309&w=2
https://www.linux.org.uk/VERSION/relnotes.2219.html
https://www.redhat.com/support/errata/RHSA-2001-047.html
https://www.debian.org/security/2001/dsa-047

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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.