kernel: proc: signedness issue in next_pidmap()
Published May 3, 2011
4.9
MEDIUMCVSS 2.0
EPSS 0.57%
Description
Multiple integer overflows in the next_pidmap function in kernel/pid.c in the Linux kernel before 2.6.38.4 allow local users to cause a denial of service (system crash) via a crafted (1) getdents or (2) readdir system call.
Affected products
No data.
Configuration 1
- < 2.6.38.4
Configuration 2
- 5.0
- 5.6
- 5.0
- 5.6
- 5.0
- 5.0
Configuration 3
- 8.04
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-238.19.1.el5
Fixed · RHSA-2011:0927
Red Hat Enterprise Linux 6
kernel-0:2.6.32-131.12.1.el6
Fixed · RHSA-2011:1189
Red Hat Enterprise MRG 2
kernel-rt-0:2.6.33.9-rt31.75.el6rt
Fixed · RHSA-2011:1253
Red Hat Enterprise Linux 4
kernel
Affected
Red Hat Enterprise MRG 1
kernel-rt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-238.19.1.el5 | Fixed | RHSA-2011:0927 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-131.12.1.el6 | Fixed | RHSA-2011:1189 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:2.6.33.9-rt31.75.el6rt | Fixed | RHSA-2011:1253 |
| Red Hat Enterprise Linux 4 | kernel | Affected | n/a |
| Red Hat Enterprise MRG 1 | kernel-rt | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, 6, and Red Hat Enterprise MRG. This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0927.html, https://rhn.redhat.com/errata/RHSA-2011-1189.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.57% (0.00572) | 45.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.58% (0.00577) | 42.77th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00042) | 9.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.55% (0.01547) | 74.13th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.84% (0.05839) | 89.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.84% (0.05839) | 77.39th | v2 (v2022.01.01) |
References (16)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c78193e9c7bcbf25b8237ad0dec82f805c4ea69b x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d8bdc59f215e62098bc5b4256fd9928bf27053a1 x_refsource_CONFIRM
- http://groups.google.com/group/fa.linux.kernel/msg/4a28ecb7f755a88d?dmode=source mailing-listx_refsource_MLISTExploitThird Party Advisory
- http://openwall.com/lists/oss-security/2011/04/19/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://openwall.com/lists/oss-security/2011/04/20/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2011-0927.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://secunia.com/advisories/44164 third-party-advisoryx_refsource_SECUNIAThird Party AdvisoryVendor Advisory
- http://securitytracker.com/id?1025420 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38.4 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.securityfocus.com/bid/47497 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-1146-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2011-1593 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=697822 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66876 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2011-1593
- https://www.cve.org/CVERecord?id=CVE-2011-1593
Change history (0)
No recorded changes yet.