CVE-2011-2723: linux linux_kernel Improper Input Validation
Vulnerability summary
CVE-2011-2723 is a medium (CVSS 5.7) Improper Input Validation vulnerability in linux linux_kernel. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.8% of scored vulnerabilities.
Not severe (CVSS 5.7, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4Timeline
- 06-09-2011PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The skb_gro_header_slow function in include/linux/netdevice.h in the Linux kernel before 2.6.39.4, when Generic Receive Offload (GRO) is enabled, resets certain fields in incorrect situations, which allows remote attackers to cause a denial of service (system crash) via crafted network traffic.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
1.11%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.11% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: adjacent network, no authentication (CVSS vector). Other conditions: not stated in public data.
Redhat18 products
- kernel< 0:2.6.18-238.27.1.el5
- kernel-debug< 0:2.6.18-238.27.1.el5
- kernel-debug-debuginfo< 0:2.6.18-238.27.1.el5
- kernel-debug-devel< 0:2.6.18-238.27.1.el5
- kernel-debuginfo< 0:2.6.18-238.27.1.el5
Linux1 product
- linux_kernel< 2.6.39.4
2 vendors · 19 products
References
19 links- bugzilla.redhat.com/show_bug.cgi?id=726552X Refsource CONFIRMIssue TrackingPatchThird Party AdvisoryREPORT
- www.redhat.com/support/errata/RHSA-2011-1321.htmlVendor AdvisoryX Refsource REDHATThird Party Advisory
- git.kernel.orgX Refsource CONFIRM
