Vulnerability Name:

CVE-2007-3732 (CCN-177159)

Assigned:2007-07-16
Published:2007-07-16
Updated:2019-11-12
Summary:In Linux 2.6 before 2.6.23, the TRACE_IRQS_ON function in iret_exc calls a C function without ensuring that the segments are set properly. The kernel's %fs needs to be restored before the call in TRACE_IRQS_ON and before enabling interrupts, so that "current" references work. Without this, "current" used in the window between iret_exc and the middle of error_code where %fs is reset, would crash.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
4.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:1.9 Low (CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.0 Medium (CCN CVSS v2 Vector: AV:L/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-Other
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2007-3732

Source: MISC
Type: Third Party Advisory
https://access.redhat.com/security/cve/cve-2007-3732

Source: CCN
Type: Red Hat Bugzilla – Bug 248353
CVE-2007-3732 kernel: Reset %fs early in iret_exc

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2007-3732

Source: XF
Type: UNKNOWN
linux-kernel-cve20073732-dos(177159)

Source: CCN
Type: Linux Kernel GIT Repository
i386: fixup TRACE_IRQ breakage

Source: MISC
Type: Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2007-3732

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version >= 2.6.0 and < 2.6.23)

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:2.6.0:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:200737320000000
    V
    		CVE-2007-3732 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-11-07
    oval:com.ubuntu.precise:def:20073732000
    V
    		CVE-2007-3732 on Ubuntu 12.04 LTS (precise) - medium.
    2007-12-31
    oval:com.ubuntu.trusty:def:20073732000
    V
    		CVE-2007-3732 on Ubuntu 14.04 LTS (trusty) - medium.
    2007-12-31
    oval:com.ubuntu.xenial:def:20073732000
    V
    		CVE-2007-3732 on Ubuntu 16.04 LTS (xenial) - medium.
    2007-12-31
    BACK
    linux linux kernel *
    linux linux kernel 2.6.0