CVE-2011-1927 json
The ip_expire function in net/ipv4/ip_fragment.c in the Linux kernel before 2.6.39 does not properly construct ICMP_TIME_EXCEEDED packets a…
published 2012-06-13 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1925
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
The ip_expire function in net/ipv4/ip_fragment.c in the Linux kernel before 2.6.39 does not properly construct ICMP_TIME_EXCEEDED packets after a timeout, which allows remote attackers to cause a denial of service (invalid pointer dereference) via crafted fragmented packets.
Patch / fix
Exploit prediction
2.56% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecba referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Technology feeds
References
-
github.com
/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecba
exploit, patch
-
openwall.com
/lists/oss-security/2011/05/18/2
mailing-list
- ftp.osuosl.org /pub/linux/kernel/v2.6/ChangeLog-2.6.39
- git.kernel.org /?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=64f3b9e203bd06855072e295557dca1485a2ecba
Sources
- CVE List CVE-2011-1927
- NVD CVE-2011-1927
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.