net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()
In the Linux kernel, the following vulnerability has been resolved: net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv() Apply the same fix than ones found in : 8d975c15c0cd ("ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()") 1ca1ba465e55 ("geneve: make sure to pull inner header in geneve_rx()") We have to save skb->network_header in a temporary variable in order to be able to recompute the network_header pointer after a pskb_inet_may_pull() call. pskb_inet_may_pull() makes sure the needed headers are in skb->head. syzbot reported: BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389 ipgre_rcv net/ipv4/ip_gre.c:411 [inline] gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447 gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163 ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] ip_local_deliver+0x21f/0x490 net/i
CVE-2024-26882
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-26882
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b",
"versionType": "git"
},
{
"status": "affected",
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "77fd5294ea09b21f6772ac954a121b87323cec80",
"versionType": "git"
},
{
"status": "affected",
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "5c03387021cfa3336b97e0dcba38029917a8af2a",
"versionType": "git"
},
{
"status": "affected",
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "60044ab84836359534bd7153b92e9c1584140e4a",
"versionType": "git"
},
{
"status": "affected",
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "c4c857723b37c20651300b3de4ff25059848b4b0",
"versionType": "git"
},
{
"status": "affected",
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "f6723d8dbfdc10c784a56748f86a9a3cd410dbd5",
"versionType": "git"
},
{
"status": "affected",
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "ca914f1cdee8a85799942c9b0ce5015bbd6844e1",
"versionType": "git"
},
{
"status": "affected",
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "b0ec2abf98267f14d032102551581c833b0659d3",
"versionType": "git"
}
],
"programFiles": [
"net/ipv4/ip_tunnel.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.273",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.214",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.153",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.83",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.23",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.7.11",
"versionType": "semver",
"lessThanOrEqual": "6.7.*"
},
{
"status": "unaffected",
"version": "6.8.2",
"versionType": "semver",
"lessThanOrEqual": "6.8.*"
},
{
"status": "unaffected",
"version": "6.9",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv4/ip_tunnel.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-26882
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26444 · Revision 1
- Added to Heist Feed
- Publisher date