369 lines
19 KiB
JSON
369 lines
19 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-68813",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-24T10:30:51.047Z",
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"datePublished": "2026-01-13T15:29:18.483Z",
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"dateUpdated": "2026-10-19T18:05:08.415Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-23T16:02:55.189Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: fix ipv4 null-ptr-deref in route error path\n\nThe IPv4 code path in __ip_vs_get_out_rt() calls dst_link_failure()\nwithout ensuring skb->dev is set, leading to a NULL pointer dereference\nin fib_compute_spec_dst() when ipv4_link_failure() attempts to send\nICMP destination unreachable messages.\n\nThe issue emerged after commit ed0de45a1008 (\"ipv4: recompile ip options\nin ipv4_link_failure\") started calling __ip_options_compile() from\nipv4_link_failure(). This code path eventually calls fib_compute_spec_dst()\nwhich dereferences skb->dev. An attempt was made to fix the NULL skb->dev\ndereference in commit 0113d9c9d1cc (\"ipv4: fix null-deref in\nipv4_link_failure\"), but it only addressed the immediate dev_net(skb->dev)\ndereference by using a fallback device. The fix was incomplete because\nfib_compute_spec_dst() later in the call chain still accesses skb->dev\ndirectly, which remains NULL when IPVS calls dst_link_failure().\n\nThe crash occurs when:\n1. IPVS processes a packet in NAT mode with a misconfigured destination\n2. Route lookup fails in __ip_vs_get_out_rt() before establishing a route\n3. The error path calls dst_link_failure(skb) with skb->dev == NULL\n4. ipv4_link_failure() → ipv4_send_dest_unreach() →\n __ip_options_compile() → fib_compute_spec_dst()\n5. fib_compute_spec_dst() dereferences NULL skb->dev\n\nApply the same fix used for IPv6 in commit 326bf17ea5d4 (\"ipvs: fix\nipv6 route unreach panic\"): set skb->dev from skb_dst(skb)->dev before\ncalling dst_link_failure().\n\nKASAN: null-ptr-deref in range [0x0000000000000328-0x000000000000032f]\nCPU: 1 PID: 12732 Comm: syz.1.3469 Not tainted 6.6.114 #2\nRIP: 0010:__in_dev_get_rcu include/linux/inetdevice.h:233\nRIP: 0010:fib_compute_spec_dst+0x17a/0x9f0 net/ipv4/fib_frontend.c:285\nCall Trace:\n <TASK>\n spec_dst_fill net/ipv4/ip_options.c:232\n spec_dst_fill net/ipv4/ip_options.c:229\n __ip_options_compile+0x13a1/0x17d0 net/ipv4/ip_options.c:330\n ipv4_send_dest_unreach net/ipv4/route.c:1252\n ipv4_link_failure+0x702/0xb80 net/ipv4/route.c:1265\n dst_link_failure include/net/dst.h:437\n __ip_vs_get_out_rt+0x15fd/0x19e0 net/netfilter/ipvs/ip_vs_xmit.c:412\n ip_vs_nat_xmit+0x1d8/0xc80 net/netfilter/ipvs/ip_vs_xmit.c:764"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/netfilter/ipvs/ip_vs_xmit.c"
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],
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"versions": [
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{
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"version": "ed0de45a1008991fdaa27a0152befcb74d126a8b",
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"lessThan": "dd72a93c80408f06327dd2d956eb1a656d0b5903",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ed0de45a1008991fdaa27a0152befcb74d126a8b",
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"lessThan": "312d7cd88882fc6cadcc08b02287497aaaf94bcd",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ed0de45a1008991fdaa27a0152befcb74d126a8b",
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"lessThan": "cdeff10851c37a002d87a035818ebd60fdb74447",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ed0de45a1008991fdaa27a0152befcb74d126a8b",
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"lessThan": "4729ff0581fbb7ad098b6153b76b6f5aac94618a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ed0de45a1008991fdaa27a0152befcb74d126a8b",
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"lessThan": "25ab24df31f7af843c96a38e0781b9165216e1a8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ed0de45a1008991fdaa27a0152befcb74d126a8b",
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"lessThan": "689a627d14788ad772e0fa24c2e57a23dbc7ce90",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ed0de45a1008991fdaa27a0152befcb74d126a8b",
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"lessThan": "ad891bb3d079a46a821bf2b8867854645191bab0",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6c2fa855d8178699706b1192db2f1f8102b0ba1e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbf569d2beee2a4a7a0bc8b619c26101d1211a88",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ff71f99d5fb2daf54340e8b290d0bc4e6b4c1d38",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3d988fcddbe7b8673a231958bd2fba61b5a7ced9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8a430e56a6485267a1b2d3747209d26c54d1a34b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6bd1ee0a993fc9574ae43c1994c54a60cb23a380",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3.18.139",
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"lessThan": "3.19",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "4.4.179",
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"lessThan": "4.5",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "4.9.171",
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"lessThan": "4.10",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "4.14.114",
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"lessThan": "4.15",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "4.19.37",
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"lessThan": "4.20",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.0.10",
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"lessThan": "5.1",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/netfilter/ipvs/ip_vs_xmit.c"
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],
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"versions": [
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{
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"version": "5.1",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.1",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.248",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.198",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.160",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.120",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.64",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.3",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.1",
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"versionEndExcluding": "5.10.248"
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},
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
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{
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"vulnerable": true,
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},
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/dd72a93c80408f06327dd2d956eb1a656d0b5903"
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},
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{
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"url": "https://git.kernel.org/stable/c/312d7cd88882fc6cadcc08b02287497aaaf94bcd"
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},
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{
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"url": "https://git.kernel.org/stable/c/cdeff10851c37a002d87a035818ebd60fdb74447"
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},
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{
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"url": "https://git.kernel.org/stable/c/4729ff0581fbb7ad098b6153b76b6f5aac94618a"
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},
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{
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"url": "https://git.kernel.org/stable/c/25ab24df31f7af843c96a38e0781b9165216e1a8"
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},
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{
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"url": "https://git.kernel.org/stable/c/689a627d14788ad772e0fa24c2e57a23dbc7ce90"
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},
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{
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"url": "https://git.kernel.org/stable/c/ad891bb3d079a46a821bf2b8867854645191bab0"
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}
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],
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"title": "ipvs: fix ipv4 null-ptr-deref in route error path",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2025-68813",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-06-16T19:15:40.029608Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-476",
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"description": "CWE-476 NULL Pointer Dereference"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T18:05:08.415Z"
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}
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}
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]
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}
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} |