net/ipv6/tcp_ipv6.c in Linux kernel 2.6.x up to 2.6.21-rc3 inadvertently copies the ipv6_fl_socklist from a listening TCP socket to child so
net/ipv6/tcp_ipv6.c in Linux kernel 2.6.x up to 2.6.21-rc3 inadvertently copies the ipv6_fl_socklist from a listening TCP socket to child sockets, which allows local users to cause a denial of service (OOPS) or double free by opening a listening IPv6 socket, attaching a flow label, and connecting to that socket.
- Published
- Mar 22, 2007
- Updated
- Jun 16, 2026
- EPSS
- 0.4% · 32th percentile
- CWE
- CWE-119
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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 · 0.4%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- 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
- linux linux kernel2.6.12
- linux linux kernel2.6.12.1
- linux linux kernel2.6.12.2
- linux linux kernel2.6.12.3
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:3.1 | hostap-modules-i386 | before 1:0.3.7-1sarge3 | 1:0.3.7-1sarge3 |
| Debian:3.1 | i2c | before 1:2.9.1-1sarge2 | 1:2.9.1-1sarge2 |
| Debian:3.1 | kernel-image-2.4.27-alpha | before 2.4.27-10sarge6 | 2.4.27-10sarge6 |
| Debian:3.1 | kernel-image-2.4.27-arm | before 2.4.27-2sarge6 | 2.4.27-2sarge6 |
| Debian:3.1 | kernel-image-2.4.27-i386 | before 2.4.27-10sarge6 | 2.4.27-10sarge6 |
| Debian:3.1 | kernel-image-2.4.27-ia64 | before 2.4.27-10sarge6 | 2.4.27-10sarge6 |
| Debian:3.1 | kernel-image-2.4.27-m68k | before 2.4.27-3sarge6 | 2.4.27-3sarge6 |
| Debian:3.1 | kernel-image-2.4.27-s390 | before 2.4.27-2sarge6 | 2.4.27-2sarge6 |
| Debian:3.1 | kernel-image-2.4.27-sparc | before 2.4.27-9sarge6 | 2.4.27-9sarge6 |
| Debian:3.1 | kernel-image-speakup-i386 | before 2.4.27-1.1sarge5 | 2.4.27-1.1sarge5 |
| Debian:3.1 | kernel-latest-2.4-alpha | before 101sarge3 | 101sarge3 |
| Debian:3.1 | kernel-latest-2.4-i386 | before 101sarge2 | 101sarge2 |
| Debian:3.1 | kernel-latest-2.4-s390 | before 2.4.27-1sarge2 | 2.4.27-1sarge2 |
| Debian:3.1 | kernel-latest-2.4-sparc | before 42sarge3 | 42sarge3 |
| Debian:3.1 | kernel-patch-2.4.27-mips | before 2.4.27-10.sarge4.040815-3 | 2.4.27-10.sarge4.040815-3 |
| Debian:3.1 | kernel-patch-powerpc-2.4.27 | before 2.4.27-10sarge6 | 2.4.27-10sarge6 |
| Debian:3.1 | kernel-source-2.4.27 | before 2.4.27-10sarge7 | 2.4.27-10sarge7 |
| Debian:3.1 | kernel-source-2.4.27 | before 2.4.27-10sarge6 | 2.4.27-10sarge6 |
| Debian:3.1 | kernel-source-2.6.8 | before 2.6.8-16sarge7 | 2.6.8-16sarge7 |
| Debian:3.1 | mindi-kernel | before 2.4.27-2sarge5 | 2.4.27-2sarge5 |
| Debian:3.1 | pcmcia-modules-2.4.27-i386 | before 3.2.5+2sarge2 | 3.2.5+2sarge2 |
| Debian:3.1 | systemimager | before 3.2.3-6sarge5 | 3.2.3-6sarge5 |
| Debian:4.0 | linux-2.6 | before 2.6.18.dfsg.1-12etch1 | 2.6.18.dfsg.1-12etch1 |
| Red Hat:enterprise_linux:2.1::as | kernel | before 0:2.4.9-e.72 | 0:2.4.9-e.72 |
+49
Same product
linux: all recordsOther highest-scoring records for the same primary product.
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- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
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:i2c | 1:2.9.1-1sarge2 · Debian:3.1 | Package registry (OSV) |
| debian:kernel-image-2.4.27-alpha | 2.4.27-10sarge6 · Debian:3.1 | Package registry (OSV) |
| debian:kernel-image-2.4.27-m68k | 2.4.27-3sarge6 · Debian:3.1 | Package registry (OSV) |
| debian:kernel-latest-2.4-alpha | 101sarge3 · Debian:3.1 | Package registry (OSV) |
| debian:kernel-latest-2.4-i386 | 101sarge2 · Debian:3.1 | Package registry (OSV) |
| debian:kernel-latest-2.4-sparc | 42sarge3 · Debian:3.1 | Package registry (OSV) |
| debian:kernel-patch-2.4.27-mips | 2.4.27-10.sarge4.040815-3 · Debian:3.1 | Package registry (OSV) |
| debian:kernel-patch-powerpc-2.4.27 | 2.4.27-10sarge6 · Debian:3.1 | Package registry (OSV) |
| debian:kernel-source-2.6.8 | 2.6.8-16sarge7 · Debian:3.1 | Package registry (OSV) |
| debian:linux-2.6 | 2.6.18.dfsg.1-12etch1 · Debian:4.0 | Package registry (OSV) |
| debian:pcmcia-modules-2.4.27-i386 | 3.2.5+2sarge2 · Debian:3.1 | Package registry (OSV) |
| debian:systemimager | 3.2.3-6sarge5 · Debian:3.1 | Package registry (OSV) |
| red hat:kernel | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-devel | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-doc | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-hugemem | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-hugemem-devel | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-largesmp | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-largesmp-devel | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-smp | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-smp-devel | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-xenU | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:kernel-xenU-devel | 0:2.6.9-55.EL · Red Hat:enterprise_linux:4::as | Package 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.
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
- none
- Integrity
- none
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- C
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
AV:L/AC:L/Au:N/C:N/I:N/A:C
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.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugzilla.redhat.com/bugzilla/show_bug.cgi?id=233478
- git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d35690beda1429544d46c8eb34b2e3a8c37ab299
- lists.suse.com/archive/suse-security-announce/2007-May/0001.html
- marc.info/?l=linux-netdev&m=117406721731891&w=2
- rhn.redhat.com/errata/RHBA-2007-0304.html
- rhn.redhat.com/errata/RHSA-2007-0436.html
- secunia.com/advisories/24618
- secunia.com/advisories/24777
- secunia.com/advisories/25078
- secunia.com/advisories/25099
- secunia.com/advisories/25226
- secunia.com/advisories/25288
- secunia.com/advisories/25392
- secunia.com/advisories/25630
- secunia.com/advisories/25683
- secunia.com/advisories/25714
- secunia.com/advisories/25961
- secunia.com/advisories/26379
- secunia.com/advisories/27528
- secunia.com/advisories/29058
Vendor advisories and official records. Exploit/PoC links are deliberately left out.