kernel: cifs: dentry refcount leak when opening a FIFO on lookup leads to panic on unmount
Published May 17, 2012
5.5
MEDIUMCVSS 3.1
EPSS 0.40%
Description
The cifs_lookup function in fs/cifs/dir.c in the Linux kernel before 3.2.10 allows local users to cause a denial of service (OOPS) via attempted access to a special file, as demonstrated by a FIFO.
Affected products
No data.
Configuration 1
- < 3.2.10
Configuration 2
- 2.0
Configuration 3
- 11
- 11
- 11
- 11
- 11
- 11
- 11
- 11
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-220.13.1.el6
Fixed · RHSA-2012:0481
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-220.13.1.el6 | Fixed | RHSA-2012:0481 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as they did not backport the commit a6ce4932fbdbcd8f8e8c6df76812014351c32892 that introduced this issue. This issue did not affect the Linux kernel as shipped with Red Hat Enterprise MRG 2. This has been addressed in Red Hat Enterprise Linux 6 via https://rhn.redhat.com/errata/RHSA-2012-0481.html.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.40% (0.00400) | 31.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00400) | 31.59th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00046) | 11.24th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (13)
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2012-0481.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2012-0531.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://secunia.com/advisories/48842 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/48964 third-party-advisoryx_refsource_SECUNIABroken Link
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10 x_refsource_CONFIRMMailing ListPatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2012/02/28/4 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2012-1090 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=798293 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/88d7d4e4a439f32acc56a6d860e415ee71d3df08 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2012-1090
- https://www.cve.org/CVERecord?id=CVE-2012-1090
Change history (0)
No recorded changes yet.