CVE-2009-4537
drivers/net/r8169.c in the r8169 driver in the Linux kernel 2.6.32.3 and earlier does not properly check the size of an Ethernet frame…
- 7.8HighCVSS base score
- 5.9%Exploitation in 30 daysEPSS · top 6.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
drivers/net/r8169.c in the r8169 driver in the Linux kernel 2.6.32.3 and earlier does not properly check the size of an Ethernet frame that exceeds the MTU, which allows remote attackers to (1) cause a denial of service (temporary network outage) via a packet with a crafted size, in conjunction with certain packets containing A characters and certain packets containing E characters; or (2) cause a denial of service (system crash) via a packet with a crafted size, in conjunction with certain packets containing '\0' characters, related to the value of the status register and erroneous behavior associated with the RxMaxSize register. NOTE: this vulnerability exists because of an incorrect fix for CVE-2009-1389.
Timeline
ID reserved
By mitre
- 12 days later
· 12 days later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 5.9% · top 6.7% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
30
- https://bugzilla.redhat.com/show_bug.cgi?id=550907 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 37521 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- SUSE-SA:2010:031 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- oval:org.mitre.oval:def:9439 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- RHSA-2010:0111 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://blog.c22.cc/2009/12/27/26c3-cat-procsysnetipv4fuckups/ (opens in a new tab)x_refsource_MISCx_transferred
- 1023419 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- RHSA-2010:0053 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [linux-netdev] 20091228 [PATCH RFC] r8169: straighten out overlength frame detection (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2010:0019 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 40645 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- kernel-r8169-dos(55647) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- [oss-security] 20091228 CVE requests - kernel security regressions for CVE-2009-1385/and -1389 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2010-1787 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [oss-security] 20091229 Re: CVE requests - kernel security regressions for CVE-2009-1385/and -1389 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- SUSE-SA:2010:023 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://events.ccc.de/congress/2009/Fahrplan/events/3596.en.html (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2010:0095 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 39742 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [oss-security] 20091231 Re: CVE requests - kernel security regressions for CVE-2009-1385/and -1389 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2010:0020 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 38031 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:7443 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 38610 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-2053 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- http://twitter.com/dakami/statuses/7104238406 (opens in a new tab)x_refsource_MISCx_transferred
- http://marc.info/?t=126202986900002&r=1&w=2 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 39830 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2010:0041 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- ADV-2010-1857 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-4503 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-4537)Record last updated .