The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when running on 64-bit systems,
The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when running on 64-bit systems, does not clear certain padding bytes from a structure, which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for help- Published
- Aug 18, 2009
- Updated
- Jun 16, 2026
- EPSS
- 0.9% · 59th percentile
- CWE
- —
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Report tools
Action score
19
Monitor
Low priority for now.
- CVSS
- 19 / 40 · 4.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.9%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | kernel | cpe:2.3:a:linux:kernel |
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| linux | linux | cpe:2.3:h:linux:linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux kernel2.6.24.7
- linux kernel2.6.25.15
- linux linux kernelup to 2.6.16.31 inclusive
- linux linux kernel2.6
- linux linux kernel2.6.0
- linux linux kernel2.6.1
- linux linux kernel2.6.10
- linux linux kernel2.6.11
- linux linux kernel2.6.11.1
- linux linux kernel2.6.11.10
- linux linux kernel2.6.11.11
- linux linux kernel2.6.11.12
- linux linux kernel2.6.11.2
- linux linux kernel2.6.11.3
- linux linux kernel2.6.11.4
- linux linux kernel2.6.11.5
- linux linux kernel2.6.11.6
- linux linux kernel2.6.11.7
- linux linux kernel2.6.11.8
- linux linux kernel2.6.11.9
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:4.0 | fai-kernels | before 1.17+etch.24etch4 | 1.17+etch.24etch4 |
| Debian:4.0 | linux-2.6 | before 2.6.18.dfsg.1-24etch4 | 2.6.18.dfsg.1-24etch4 |
| Debian:4.0 | linux-2.6.24 | before 2.6.24-6~etchnhalf.9etch1 | 2.6.24-6~etchnhalf.9etch1 |
| Debian:4.0 | user-mode-linux | before 2.6.18-1um-2etch.24etch4 | 2.6.18-1um-2etch.24etch4 |
| Red Hat:enterprise_linux:4::as | kernel | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-debuginfo | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-devel | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-doc | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-hugemem | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-hugemem-devel | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-largesmp | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-largesmp-devel | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-smp | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-smp-devel | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-xenU | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:4::as | kernel-xenU-devel | before 0:2.6.9-89.0.11.EL | 0:2.6.9-89.0.11.EL |
| Red Hat:enterprise_linux:5::client | kernel | before 0:2.6.18-164.el5 | 0:2.6.18-164.el5 |
| Red Hat:enterprise_linux:5::client | kernel-debug | before 0:2.6.18-164.el5 | 0:2.6.18-164.el5 |
| Red Hat:enterprise_linux:5::client | kernel-debug-debuginfo | before 0:2.6.18-164.el5 | 0:2.6.18-164.el5 |
| Red Hat:enterprise_linux:5::client | kernel-debug-devel | before 0:2.6.18-164.el5 | 0:2.6.18-164.el5 |
| Red Hat:enterprise_linux:5::client | kernel-debuginfo | before 0:2.6.18-164.el5 | 0:2.6.18-164.el5 |
| Red Hat:enterprise_linux:5::client | kernel-debuginfo-common | before 0:2.6.18-164.el5 | 0:2.6.18-164.el5 |
| Red Hat:enterprise_linux:5::client | kernel-devel | before 0:2.6.18-164.el5 | 0:2.6.18-164.el5 |
| Red Hat:enterprise_linux:5::client | kernel-doc | before 0:2.6.18-164.el5 | 0:2.6.18-164.el5 |
+42
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2009-1385Integer underflow in the e1000_clean_rx_irq function in drivers/net/e1000/e1000_main.c in the e1000 driver in the Linux kernel before 2.6.3041Plan
- CVE-2009-1389Buffer overflow in the RTL8169 NIC driver (drivers/net/r8169.c) in the Linux kernel before 2.6.30 allows remote attackers to cause a denial 33Monitor
- CVE-2009-2844cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31-rc6 allows remote attackers to cause a denia32Monitor
- CVE-2010-0309The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state dat28Monitor
- CVE-2009-2767The init_posix_timers function in kernel/posix-timers.c in the Linux kernel before 2.6.31-rc6 allows local users to cause a denial of servic28Monitor
- CVE-2009-2406Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel befo27Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:fai-kernels | 1.17+etch.24etch4 · Debian:4.0 | Package registry (OSV) |
| debian:linux-2.6 | 2.6.18.dfsg.1-24etch4 · Debian:4.0 | Package registry (OSV) |
| debian:linux-2.6.24 | 2.6.24-6~etchnhalf.9etch1 · Debian:4.0 | Package registry (OSV) |
| debian:user-mode-linux | 2.6.18-1um-2etch.24etch4 · Debian:4.0 | Package registry (OSV) |
| red hat:kernel-rt | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debug | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debug-debuginfo | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debug-devel | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debuginfo | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debuginfo-common | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-devel | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-doc | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-trace | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-trace-debuginfo | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-trace-devel | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-vanilla | 0:2.6.24.7-132.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | local | 2009-08-04 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-15 d
- Published
- TodaySep 30, 2026+6252 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- C · data can be read
- Integrity
- none
- Availability
- none
- Attack complexity
- Low
- Confidentiality impact
- C
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
—
CVSS vector
AV:L/AC:L/Au:N/C:C/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=0083fc2c50e6c5127c2802ad323adf8143ab7856
- rhn.redhat.com/errata/RHSA-2009-1243.html
- secunia.com/advisories/36136
- secunia.com/advisories/36501
- secunia.com/advisories/36562
- secunia.com/advisories/36759
- secunia.com/advisories/37105
- secunia.com/advisories/37471
- www.exploit-db.com/exploits/9352
- www.openwall.com/lists/oss-security/2009/08/04/1
- www.openwall.com/lists/oss-security/2009/08/05/1
- www.openwall.com/lists/oss-security/2009/08/26/2
- www.redhat.com/support/errata/RHSA-2009-1438.html
- www.securityfocus.com/archive/1/507985/100/0/threaded
- www.ubuntu.com/usn/USN-852-1
- www.vmware.com/security/advisories/VMSA-2009-0016.html
- www.vupen.com/english/advisories/2009/3316
- bugzilla.redhat.com/show_bug.cgi?id=515392
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10637
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8405
Vendor advisories and official records. Exploit/PoC links are deliberately left out.