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NVD / CVE Program· CNA Chrome

CVE-2013-0914: The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across a

Noroxi assessment

Priority: Monitor (action score 14/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.46% (FIRST EPSS).
  • No special conditions are required; it is repeatable.
  • Fixed version: linux (Debian:12) 3.2.41-1; linux-2.6 (Debian:6.0) 2.6.32-48squeeze3; kernel (Red Hat:enterprise_linux:5::server) 0:2.6.18-348.12.1.el5.

Low priority for now. Upgrade to linux (Debian:12) 3.2.41-1; linux-2.6 (Debian:6.0) 2.6.32-48squeeze3; kernel (Red Hat:enterprise_linux:5::server) 0:2.6.18-348.12.1.el5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call.

LowCVSS 3.6 · v2.0—No exploit Fix available
Published
Mar 22, 2013
Updated
Jun 16, 2026
EPSS
0.4% · 39th percentile

Report tools

JSON

Action score

14

Monitor

Low priority for now.

CVSS
14 / 40 · 3.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelup to 3.8.3 inclusive
  • linux linux kernel3.8.0
  • linux linux kernel3.8.1
  • linux linux kernel3.8.2

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 3.2.41-13.2.41-1
Debian:6.0linux-2.6before 2.6.32-48squeeze32.6.32-48squeeze3
Red Hat:enterprise_linux:5::serverkernelbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-debugbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-debug-debuginfobefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-debug-develbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-debuginfobefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-debuginfo-commonbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-develbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-docbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-headersbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-kdumpbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-kdump-debuginfobefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-kdump-develbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-PAEbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-PAE-debuginfobefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-PAE-develbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-xenbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-xen-debuginfobefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:5::serverkernel-xen-develbefore 0:2.6.18-348.12.1.el50:2.6.18-348.12.1.el5
Red Hat:enterprise_linux:6::clientkernelbefore 0:2.6.32-358.14.1.el60:2.6.32-358.14.1.el6
Red Hat:enterprise_linux:6::clientkernel-debugbefore 0:2.6.32-358.14.1.el60:2.6.32-358.14.1.el6
Red Hat:enterprise_linux:6::clientkernel-debug-debuginfobefore 0:2.6.32-358.14.1.el60:2.6.32-358.14.1.el6
Red Hat:enterprise_linux:6::clientkernel-debug-develbefore 0:2.6.32-358.14.1.el60:2.6.32-358.14.1.el6

+47

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2013-2548Mar 15, 2013 · The crypto_report_one function in crypto/crypto_user.c in the report API in the crypto user configuration API in the Linux kernel through 3.
    8Monitor
  • ← EarlierCVE-2013-0913Mar 18, 2013 · Integer overflow in drivers/gpu/drm/i915/i915_gem_execbuffer.c in the i915 driver in the Direct Rendering Manager (DRM) subsystem in the Lin
    28Monitor
  • Later →CVE-2013-1792Mar 22, 2013 · Race condition in the install_user_keyrings function in security/keys/process_keys.c in the Linux kernel before 3.8.3 allows local users to
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:linux3.2.41-1 · Debian:12Package registry (OSV)
debian:linux-2.62.6.32-48squeeze3 · Debian:6.0Package registry (OSV)
red hat:kernel-rt0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debug0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debug-debuginfo0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debug-devel0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debuginfo0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-debuginfo-common-x86_640:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-devel0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-doc0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-firmware0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-trace0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-trace-debuginfo0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)
red hat:kernel-rt-trace-devel0:3.6.11.2-rt33.39.el6rt · Red Hat:enterprise_mrg:2:server:el6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, 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
P · data can be read
Integrity
P · data or configuration can be modified
Availability
none
Attack complexity
Low
Confidentiality impact
P
Integrity impact
P
Availability impact
None

Weakness class (CWE)

CWE-264 · Permissions, Privileges, and Access Controls

CVSS vector

AV:L/AC:L/Au:N/C:P/I:P/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

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (17 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records