kernel: integer signedness error in the btrfs_ioctl_space_info function could lead to a DoS
Published Feb 20, 2020
7.0
HIGHCVSS 3.1
EPSS 0.32%
Description
Integer signedness error in the btrfs_ioctl_space_info function in the Linux kernel 2.6.37 allows local users to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted slot value.
Affected products
- Vendor n/a Product Linux kernel Defaultn/a
- Version 2.6.37StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Linux kernel | n/a |
|
- 2.6.37
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, 6, or Red Hat Enterprise MRG as they did not backport the upstream commit bf5fc093c that introduced this issue.
Red Hat mitigation
As the BTRFS module will be auto-loaded when required, its use can be disabled by preventing the module from loading with the following instructions: # echo "install btrfs /bin/true" >> /etc/modprobe.d/disable-btrfs.conf The system will need to be restarted if the BTRFS modules are loaded, it may be possible to unload them. In most circumstances, the BTRFS kernel modules will be unable to be unloaded while any BTRFS filesystems are mounted or in use. If the system requires this module to work correctly, this mitigation may not be suitable. If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:C/I:C/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 | 0.32% (0.00315) | 22.05th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.32% (0.00315) | 22.94th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00046) | 11.34th | 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 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (9)
- http://marc.info/?l=linux-kernel&m=129726078708425&w=2 x_refsource_MISCPatchThird Party Advisory
- http://marc.info/?l=oss-security&m=129726743519620&w=2 x_refsource_MISCThird Party Advisory
- http://vulnfactory.org/vulns/ x_refsource_MISCThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2011-0699 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1816142 Issue Tracking
- https://github.com/BlankOn/linux-debian/blob/master/debian/changelog.BlankOn x_refsource_MISCRelease NotesThird Party Advisory
- https://marc.info/?l=linux-kernel&m=129726078708425&w=2
- https://nvd.nist.gov/vuln/detail/CVE-2011-0699
- https://www.cve.org/CVERecord?id=CVE-2011-0699
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=linux-kernel&m=129726078708425&w=2 | x_refsource_MISCPatchThird Party Advisory | |
| http://marc.info/?l=oss-security&m=129726743519620&w=2 | x_refsource_MISCThird Party Advisory | |
| http://vulnfactory.org/vulns/ | x_refsource_MISCThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2011-0699 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1816142 | Issue Tracking | |
| https://github.com/BlankOn/linux-debian/blob/master/debian/changelog.BlankOn | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://marc.info/?l=linux-kernel&m=129726078708425&w=2 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2011-0699 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-0699 |
Change history (0)
No recorded changes yet.