CVE-2011-3363
Publication date 3 October 2011
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
The setup_cifs_sb function in fs/cifs/connect.c in the Linux kernel before 2.6.39 does not properly handle DFS referrals, which allows remote CIFS servers to cause a denial of service (system crash) by placing a referral at the root of a share.
From the Ubuntu Security Team
Yogesh Sharma discovered that CIFS did not correctly handle UNCs that had no prefixpaths. A local attacker with access to a CIFS partition could exploit this to crash the system, leading to a denial of service.
Status
Package | Ubuntu Release | Status |
---|---|---|
linux | 11.10 oneiric |
Not affected
|
11.04 natty |
Fixed 2.6.38-10.44
|
|
10.10 maverick |
Fixed 2.6.35-30.61
|
|
10.04 LTS lucid |
Fixed 2.6.32-33.64
|
|
8.04 LTS hardy |
Not affected
|
|
linux-ec2 | 11.10 oneiric | Not in release |
11.04 natty | Not in release | |
10.10 maverick | Ignored end of life | |
10.04 LTS lucid |
Fixed 2.6.32-317.32
|
|
8.04 LTS hardy | Not in release | |
linux-fsl-imx51 | 11.10 oneiric | Not in release |
11.04 natty | Not in release | |
10.10 maverick | Not in release | |
10.04 LTS lucid |
Fixed 2.6.31-611.29
|
|
8.04 LTS hardy | Not in release | |
linux-lts-backport-maverick | 11.10 oneiric | Not in release |
11.04 natty | Not in release | |
10.10 maverick | Not in release | |
10.04 LTS lucid |
Fixed 2.6.35-30.61~lucid1
|
|
8.04 LTS hardy | Not in release | |
linux-lts-backport-natty | 11.10 oneiric | Not in release |
11.04 natty | Not in release | |
10.10 maverick | Not in release | |
10.04 LTS lucid |
Fixed 2.6.38-10.44~lucid1
|
|
8.04 LTS hardy | Not in release | |
linux-lts-backport-oneiric | 11.10 oneiric | Not in release |
11.04 natty | Not in release | |
10.10 maverick | Not in release | |
10.04 LTS lucid |
Not affected
|
|
8.04 LTS hardy | Not in release | |
linux-mvl-dove | 11.10 oneiric | Not in release |
11.04 natty | Not in release | |
10.10 maverick |
Fixed 2.6.32-417.34
|
|
10.04 LTS lucid |
Fixed 2.6.32-217.34
|
|
8.04 LTS hardy | Not in release | |
linux-ti-omap4 | 11.10 oneiric |
Not affected
|
11.04 natty |
Fixed 2.6.38-1209.17
|
|
10.10 maverick |
Fixed 2.6.35-903.26
|
|
10.04 LTS lucid | Not in release | |
8.04 LTS hardy | Not in release |
Notes
mdeslaur
from oss-security: “If you have this, you might also want cifs: add fallback in is_path_accessible for old servers 221d1d797202984cb874e3ed9f1388593d34ee22”
Patch details
Package | Patch details |
---|---|
linux |
Severity score breakdown
Parameter | Value |
---|---|
Base score |
|
Attack vector | Adjacent |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
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- USN-1159-1
- Linux kernel vulnerabilities (Marvell Dove)
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