Bug 2275686 (CVE-2024-26882)

Summary:	CVE-2024-26882 kernel: net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()
Product:	[Other] Security Response	Reporter:	Robb Gatica <rgatica>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, ldoskova, lgoncalv, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, vkumar, wcosta, williams, wmealing, ycote, ykopkova
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.4.273, kernel 5.10.214, kernel 5.15.153, kernel 6.1.83, kernel 6.6.23, kernel 6.7.11, kernel 6.8.2, kernel 6.9-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the ip_tunnel implementation in the Linux kernel. This flaw occurs because the ip_tunnel_rcv() function does not properly pull the inner IP header before processing. A remote attacker could exploit this by sending crafted tunneled packets, potentially leading to a denial of service or incorrect packet handling. This impacts the integrity and availability of systems using IP tunneling.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2275687
Bug Blocks:	2275696

Description Robb Gatica 2024-04-17 18:12:18 UTC

In the Linux kernel, the following vulnerability has been resolved:

net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()

The Linux kernel CVE team has assigned CVE-2024-26882 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024041741-CVE-2024-26882-be35@gregkh/T

Comment 2 Robb Gatica 2024-04-17 18:13:03 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2275687]

Comment 7 Alex 2024-06-09 16:31:39 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26882 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags REMOTE READ KASAN NETWORK SKB  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.

Comment 8 errata-xmlrpc 2024-11-12 09:23:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315