CVE-2007-5501
Published Nov 15, 2007 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c in Linux kernel 2.6.21 through 2.6.23.7, and 2.6.24-rc through 2.6.24-rc2, allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c in Linux kernel 2.6.21 through 2.6.23.7, and 2.6.24-rc through 2.6.24-rc2, allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- 10%
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- git.kernel.org ↗
- [linux-kernel] 20071116 Linux 2.6.23.8 ↗
- 27922 ↗
- 27703 ↗
- FEDORA-2007-3751 ↗
- 27919 ↗
- 28706 ↗
- SUSE-SA:2008:013 ↗
- linux-kernel-tcpsacktagwritequeue-dos(38548) ↗
- 27664 ↗
- 26474 ↗
- MDVSA-2008:044 ↗
Record history
Published Nov 15, 2007 · Last refreshed Oct 23, 2026