erspan: make sure erspan_base_hdr is present in skb->head
In the Linux kernel, the following vulnerability has been resolved: erspan: make sure erspan_base_hdr is present in skb->head syzbot reported a problem in ip6erspan_rcv() [1] Issue is that ip6erspan_rcv() (and erspan_rcv()) no longer make sure erspan_base_hdr is present in skb linear part (skb->head) before getting @ver field from it. Add the missing pskb_may_pull() calls. v2: Reload iph pointer in erspan_rcv() after pskb_may_pull() because skb->head might have changed. [1] BUG: KMSAN: uninit-value in pskb_may_pull_reason include/linux/skbuff.h:2742 [inline] BUG: KMSAN: uninit-value in pskb_may_pull include/linux/skbuff.h:2756 [inline] BUG: KMSAN: uninit-value in ip6erspan_rcv net/ipv6/ip6_gre.c:541 [inline] BUG: KMSAN: uninit-value in gre_rcv+0x11f8/0x1930 net/ipv6/ip6_gre.c:610 pskb_may_pull_reason include/linux/skbuff.h:2742 [inline] pskb_may_pull include/linux/skbuff.h:2756 [inline] ip6erspan_rcv net/ipv6/ip6_gre.c:541 [inline] gre_rcv+0x11f8/0x1930 net/ipv6/ip6_gre.c:610 ip6_protocol_deliver_rcu+0x1d4c/0x2ca0 net/ipv6/ip6_input.c:438 ip6_input_finish net/ipv6/ip6_input.c:483 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492 ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586 dst_input include/net/dst.h:460 [inline] ip6_rcv_finish+0x955/0x970 net/ipv6/ip6_input.c:79 NF_HOOK include/linux/netfilter.h:314 [inline] ipv6_rcv+0xde/0x390 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5538 [inline] __netif_
CVE-2024-35888
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-2024-35888
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": "0a198e0bb8bef51ced179702ad1af6f9e3715b64",
"lessThan": "06a939f72a24a7d8251f84cf4c042df86c6666ac",
"versionType": "git"
},
{
"status": "affected",
"version": "cb73ee40b1b381eaf3749e6dbeed567bb38e5258",
"lessThan": "e54a0c79cdc2548729dd7e2e468b08c5af4d0df5",
"versionType": "git"
},
{
"status": "affected",
"version": "cb73ee40b1b381eaf3749e6dbeed567bb38e5258",
"lessThan": "b14b9f9503ec823ca75be766dcaeff4f0bfeca85",
"versionType": "git"
},
{
"status": "affected",
"version": "cb73ee40b1b381eaf3749e6dbeed567bb38e5258",
"lessThan": "ee0088101beee10fa809716d6245d915b09c37c7",
"versionType": "git"
},
{
"status": "affected",
"version": "cb73ee40b1b381eaf3749e6dbeed567bb38e5258",
"lessThan": "1db7fcb2b290c47c202b79528824f119fa28937d",
"versionType": "git"
},
{
"status": "affected",
"version": "cb73ee40b1b381eaf3749e6dbeed567bb38e5258",
"lessThan": "4e3fdeecec5707678b0d1f18c259dadb97262e9d",
"versionType": "git"
},
{
"status": "affected",
"version": "cb73ee40b1b381eaf3749e6dbeed567bb38e5258",
"lessThan": "0ac328a5a4138a6c03dfc3f46017bd5c19167446",
"versionType": "git"
},
{
"status": "affected",
"version": "cb73ee40b1b381eaf3749e6dbeed567bb38e5258",
"lessThan": "17af420545a750f763025149fa7b833a4fc8b8f0",
"versionType": "git"
},
{
"status": "affected",
"version": "5195acd38ae48b7b5c186f522cd4351441297859",
"versionType": "git"
},
{
"status": "affected",
"version": "4.19.20",
"lessThan": "4.19.312",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.20.7",
"lessThan": "4.21",
"versionType": "semver"
}
],
"programFiles": [
"net/ipv4/ip_gre.c",
"net/ipv6/ip6_gre.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.312",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.274",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.215",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.154",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.85",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.26",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.8.5",
"versionType": "semver",
"lessThanOrEqual": "6.8.*"
},
{
"status": "unaffected",
"version": "6.9",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv4/ip_gre.c",
"net/ipv6/ip6_gre.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-35888
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26530 · Revision 1
- Added to Heist Feed
- Publisher date